{"id":177709,"date":"2026-08-14T08:39:49","date_gmt":"2026-08-14T08:39:49","guid":{"rendered":"https:\/\/pabau.com\/?p=177709"},"modified":"2026-08-14T12:24:06","modified_gmt":"2026-08-14T12:24:06","slug":"icd-10-code-s66527s","status":"publish","type":"post","link":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/","title":{"rendered":"ICD-10 code S66.527S: left little finger laceration sequela"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"MedicalWebPage\",\"headline\":\"ICD-10 code S66.527S: Laceration of intrinsic muscle, left little finger sequela\",\"description\":\"ICD-10 code S66.527S covers laceration of intrinsic muscle, fascia and tendon of the left little finger at wrist and hand level, sequela. Billable for FY2026.\",\"url\":\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s66527s\/\",\"audience\":{\"@type\":\"MedicalAudience\",\"audienceType\":\"Clinician\"},\"reviewedBy\":{\"@type\":\"Person\",\"name\":\"Dr Vanja Kitanova\",\"jobTitle\":\"Medical Reviewer\",\"affiliation\":{\"@type\":\"Organization\",\"name\":\"Pabau\"},\"knowsAbout\":[\"Medical Coding\",\"Clinical Documentation\",\"Healthcare Billing\",\"Clinical Safety\"],\"sameAs\":\"https:\/\/pabau.com\/blog\/author\/vanja\/\"},\"datePublished\":\"2026-08-14\",\"dateModified\":\"2026-08-14\"}<\/script>\n\n\n        <div id=\"key_takeaways\">\n            <div class=\"header\">\n                                    <img decoding=\"async\" src=\"https:\/\/pabau.com\/wp-content\/uploads\/2025\/12\/Key-Takeaways-Icon.svg\" alt=\"Key takeaways\" height=\"42\" width=\"42\">\n                                <h3>Key takeaways<\/h3>\n            <\/div>\n            <div class=\"list\">\n                                                            <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>ICD-10 code S66.527S means laceration of intrinsic muscle, fascia and tendon of the left little finger at wrist and hand level, sequela.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>The sixth character carries the digit and the side, so S66.520 is the right index finger and only S66.527 is the left little finger.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>S66.527S is billable in the FY2026 ICD-10-CM edition, effective October 1, 2025, and it is exempt from POA reporting.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>Sequence the residual condition first and S66.527S second, as ICD-10-CM Official Guidelines section I.B.10 directs.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#3D3D46\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p>Practice management software like Pabau prompts providers to record laterality, injury date, and current deficit before the note leaves the room.<\/p>\n                        <\/div>\n                                                <\/div>\n        <\/div>\n    \n\n\n<p class=\"wp-block-paragraph\"><strong>ICD-10 code S66.527S<\/strong> covers laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela. It applies once the laceration has healed and a lasting deficit remains. A patient who returns nine months after a glass injury, still unable to spread the little finger, is coded here.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The digit and the side live in the sixth character, and that is where this family is most often miscoded. S66.520 is the right index finger. Only S66.527 is the left little finger.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"ICD-10 Revisions: Stay Updated or Fall Behind\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/bqAyb-BCA0w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 id=\"h-icd-10-code-s66-527s-at-a-glance\" class=\"wp-block-heading\">ICD-10 code S66.527S at a glance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S66.527S is a billable, specific ICD-10-CM code. The FY2026 edition took effect on October 1, 2025, and the code has not been revised since ICD-10-CM went live in 2015.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Field<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Detail<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Code<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.527S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Full description<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Short description<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Lacerat intrns musc\/fasc\/tend l lit fngr at wrs\/hnd lv, sqla<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Billable and specific<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes, valid for reimbursement<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">FY2026 effective date<\/td>\n<td style=\"padding:12px 16px;color:#374151\">October 1, 2025<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Chapter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S00-T88: Injury, poisoning and certain other consequences of external causes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Block<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S60-S69: Injuries to the wrist, hand and fingers<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Category<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66: Injury of muscle, fascia and tendon at wrist and hand level<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Subcategory<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.5: Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Injury type (fifth character)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.52: Laceration of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Sixth character (7)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Left little finger<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Seventh character (S)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Sequela<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">POA reporting<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Exempt from present-on-admission reporting<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">MS-DRG grouping (v43.0)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">604 and 605, trauma to the skin, subcutaneous tissue and breast, with and without MCC (MDC 09)<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">HIPAA valid<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes, valid for HIPAA-covered electronic transactions<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">ICD-9-CM equivalent<\/td>\n<td style=\"padding:12px 16px;color:#374151\">906.1, late effect of open wound of extremities without mention of tendon injury (backward GEM, approximate)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">The descriptor above is the wording in the ICD-10-CM tabular list, which NCHS at the CDC maintains for the United States. You can confirm it in the <a href=\"https:\/\/icd10cmtool.cdc.gov\/\" target=\"_blank\" rel=\"nofollow noopener\">CDC\/NCHS ICD-10-CM web tool<\/a>. CMS publishes the annual code files and the MS-DRG grouper that consumes them.<\/p>\n\n\n\n<h2 id=\"h-what-s66-527s-describes\" class=\"wp-block-heading\">What S66.527S describes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S66.527S covers a healed laceration involving three tissue types in the left fifth digit: intrinsic muscle, fascia, and the tendons of those intrinsic muscles. The injury site is the wrist and hand level rather than the digit itself. The patient no longer needs wound care, but a deficit traceable to that laceration remains.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One distinction decides this code more often than laterality does. S66.5- is the intrinsic group only. A cut to a long flexor or extensor tendon running down from the forearm belongs elsewhere. The excludes-notes section below sets out where.<\/p>\n\n\n\n<h3 id=\"h-intrinsic-muscles-that-act-on-the-little-finger\" class=\"wp-block-heading\">Intrinsic muscles that act on the little finger<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Intrinsic muscles begin and end inside the hand. For the fifth digit that means the hypothenar group: abductor digiti minimi, flexor digiti minimi brevis, and opponens digiti minimi. The third palmar interosseous and the fourth lumbrical also act on this finger.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Damage here shows up as loss of finger spread, weak small-object pinch, and poor coordination in the ulnar side of the hand. Those are the deficits a sequela note should name, because they are what separates S66.527S from a healed wound with no residual effect.<\/p>\n\n\n\n<h3 id=\"h-fascia-at-wrist-and-hand-level\" class=\"wp-block-heading\">Fascia at wrist and hand level<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The palmar aponeurosis, the hypothenar fascia, and the proximal part of the digital flexor sheath are the fascial structures this code reaches. Fascial laceration matters clinically because scarring can tether the tissue planes around the hypothenar muscles. When that happens, code the scar or contracture as well, then report S66.527S after it.<\/p>\n\n\n\n<h3 id=\"h-tendons-included-in-this-code\" class=\"wp-block-heading\">Tendons included in this code<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The tendons covered here belong to the intrinsic muscles above. That includes their insertions into the extensor hood and lateral bands of the fifth digit. They are short, they sit inside the hand, and they are easy to confuse with the extrinsic tendons crossing the same territory.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the operative or emergency note names the flexor digitorum superficialis or profundus, the correct family is S66.1- rather than S66.5-. If it names the extensor digitorum slip to the little finger, the family is S66.3-.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Documenting which structure was cut is what keeps the coder out of the wrong subcategory. A <a href=\"https:\/\/pabau.com\/features\/medical-records-management\/\">structured clinical record<\/a> makes that operative detail easy to retrieve years later.<\/p>\n\n\n\n<h2 id=\"h-where-s66-527s-sits-in-the-code-hierarchy\" class=\"wp-block-heading\">Where S66.527S sits in the code hierarchy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Each character narrows the code by one decision: body region, then structure, then injury type, then digit and side, then encounter.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S00-T88<\/strong> injury, poisoning and certain other consequences of external causes.<\/li>\n\n\n\n<li><strong>S60-S69<\/strong> injuries to the wrist, hand and fingers.<\/li>\n\n\n\n<li><strong>S66<\/strong> injury of muscle, fascia and tendon at wrist and hand level.<\/li>\n\n\n\n<li><strong>S66.5<\/strong> injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level.<\/li>\n\n\n\n<li><strong>S66.52<\/strong> laceration, as opposed to strain (S66.51), unspecified injury (S66.50), or other injury (S66.59).<\/li>\n\n\n\n<li><strong>S66.527<\/strong> left little finger, the digit and side that the sixth character fixes.<\/li>\n\n\n\n<li><strong>S66.527S<\/strong> sequela, the encounter type that the seventh character fixes.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Only the last line is billable. S66.5, S66.52, and S66.527 are all non-specific codes that exist for navigation, and a claim carrying any of them will reject.<\/p>\n\n\n        <div id=\"pro_tip\">\n            <div class=\"img\">\n                <svg width=\"42\" height=\"42\" viewBox=\"0 0 42 42\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                    <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                        d=\"M12.6383 19.5238C12.6632 21.2071 12.8734 22.9926 12.0685 24.5523C11.0341 26.8917 8.45076 28.169 7.56292 30.5918C6.63082 33.1061 7.19505 36.185 9.31371 37.9786C10.929 39.5678 13.4183 39.9873 15.6061 39.5463C17.4592 39.073 19.1049 37.8388 19.9706 36.1608C20.781 34.7141 20.7866 32.9904 20.5293 31.3985C20.1006 29.3092 18.3775 27.8705 16.9807 26.362C14.8814 24.1005 14.6684 20.6854 15.595 17.8915C16.4331 15.4768 19.0026 14.2344 20.0425 11.9461C20.7202 10.6769 20.7506 9.20327 20.6068 7.81304C20.1864 5.40098 18.3139 3.23631 15.8716 2.56674C13.9742 2.03969 11.8224 2.30052 10.1739 3.37614C8.70522 4.34688 7.5878 5.86618 7.28356 7.58178C6.76081 9.82981 7.53525 12.2822 9.20307 13.9118C10.7658 15.4741 12.4806 17.2273 12.6383 19.5238Z\"\n                        fill=\"#2BADD4\" \/>\n                    <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                        d=\"M22.7048 19.8387C22.6822 22.3279 24.4507 24.6234 26.7493 25.4682C28.0531 25.961 29.4725 25.9183 30.7989 25.5487C32.0575 24.9955 33.301 24.2237 34.0069 23.0092C34.8384 21.5811 35.2982 19.8286 34.7832 18.2094C34.3611 16.2507 32.8739 14.6541 31.0275 13.9426C28.6736 12.9595 25.8073 13.7942 24.1719 15.7001C23.2022 16.8366 22.6143 18.3326 22.7048 19.8387Z\"\n                        fill=\"#2BADD4\" \/>\n                <\/svg>\n            <\/div>\n            <div class=\"text\">\n                <h3>Pro Tip<\/h3>\n                <p>S66.527 without a seventh character will not clear a claim edit. Category S66 offers only the A, D, and S characters. Unlike the fracture families it has no open-type, delayed-healing, nonunion, or malunion options. So a letter such as G, K, or N on an S66 code is always wrong.<\/p>\n            <\/div>\n        <\/div>\n    \n\n\n<h2 id=\"h-understanding-the-seventh-character-s-for-sequela\" class=\"wp-block-heading\">Understanding the seventh character: S for sequela<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The seventh character records which encounter you are billing, not how severe the injury was. Getting it wrong is a common denial trigger on hand injury follow-up claims. Every code in category S66 takes one of three characters.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Code<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Seventh character<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Encounter type<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">When to use it<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.527A<\/td>\n<td style=\"padding:12px 16px;color:#374151\">A<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Initial encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Active treatment of the laceration, such as the emergency visit, the first repair, or the first wound assessment<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.527D<\/td>\n<td style=\"padding:12px 16px;color:#374151\">D<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Subsequent encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Routine care while the injury is still healing, such as suture removal, a wound check, or a splint change<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.527S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Treatment of a lasting effect of the healed laceration, such as tendon adhesion, contracture, or persistent weakness<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">A sequela is a residual condition that remains after the acute phase has ended. ICD-10-CM Official Guidelines section I.B.10 sets the sequencing: code the residual condition first, then the sequela code. That means S66.527S rarely appears alone on a claim.<\/p>\n\n\n\n<h3 id=\"h-s66-527a-vs-s66-527d-vs-s66-527s-choosing-the-right-encounter\" class=\"wp-block-heading\">S66.527A vs S66.527D vs S66.527S: choosing the right encounter<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Use S66.527A<\/strong> when the wound is new and the clinician is treating it. First presentation, first repair, and the first assessment of the laceration all sit here.<\/li>\n\n\n\n<li><strong>Use S66.527D<\/strong> while the injury is still healing. Suture removal, dressing changes, and splint adjustments after the repair are routine subsequent care.<\/li>\n\n\n\n<li><strong>Use S66.527S<\/strong> once healing is complete and a deficit persists. Restricted little finger spread from tendon adhesion, or pain that began with the laceration, both qualify.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A quick test settles most cases. Wording such as healing wound in the assessment points to the D character. Wording such as sequela of prior laceration, or post-repair tendon adhesion, points to the S character. That distinction matters most in <a href=\"https:\/\/pabau.com\/industry\/physical-therapy-emr\/\">physical therapy practices<\/a> that pick up grip rehabilitation months later.<\/p>\n\n\n\n<h2 id=\"h-related-and-sibling-codes\" class=\"wp-block-heading\">Related and sibling codes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Most miscoding in this family is a one-digit slip. The table below holds the codes a coder is most likely to need next, with the exact descriptor for each.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Code<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Description<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Why it comes up<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.527A<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Same injury, the visit where active treatment happened<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.527D<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Same injury, routine care during the healing phase<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.526S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">The right-hand counterpart, one digit away in the sixth character<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.529S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Only when the record genuinely never names the digit or the side<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.517S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Strain of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Same digit and side, but the injury was a strain rather than a cut<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.597S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Same digit and side, injury type documented but not laceration or strain<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.127S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of flexor muscle, fascia and tendon of left little finger at wrist and hand level, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Use this when the cut structure was the extrinsic flexor, not an intrinsic<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.327S<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Laceration of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Use this when the cut structure was the extrinsic extensor<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.4-<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level<\/td>\n<td style=\"padding:12px 16px;color:#374151\">The thumb has its own subcategory and is a Type 2 Excludes under S66.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h3 id=\"h-sixth-character-finger-map-for-the-s66-52-series\" class=\"wp-block-heading\">Sixth-character finger map for the S66.52- series<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The sixth character runs index to little, right before left, then two residual values. Read it once and the whole family becomes predictable.<\/p>\n\n\n\n<table style=\"width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;font-size:15px;line-height:1.5;margin:1.5em 0 2em;box-shadow:0 2px 12px rgba(0,0,0,0.08)\">\n<thead>\n<tr>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Code<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Digit and side<\/th>\n<th style=\"background:#121D36;color:#fff;padding:14px 16px;text-align:left;font-weight:600;font-size:14px;letter-spacing:0.3px;border-bottom:2px solid #2BADD4\">Sequela code<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.520<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Right index finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.520S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.521<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Left index finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.521S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.522<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Right middle finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.522S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.523<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Left middle finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.523S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.524<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Right ring finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.524S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.525<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Left ring finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.525S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.526<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Right little finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.526S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.527<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Left little finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.527S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.528<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Other finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.528S<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S66.529<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Unspecified finger<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S66.529S<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">Two errors follow from misreading this column. Picking S66.520S puts the claim on the right index finger, a different digit on the other hand. Picking S66.526S keeps the digit but flips the side. The same pattern runs through the flexor family at S66.12- and the extensor family at S66.32-. So S66.127 and S66.327 are also the left little finger.<\/p>\n\n\n\n<h2 id=\"h-excludes-notes-and-tabular-instructions-that-apply-to-s66-527s\" class=\"wp-block-heading\">Excludes notes and tabular instructions that apply to S66.527S<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S66.527S carries no notes of its own. It inherits five from the levels above it, and every one of them changes what else goes on the claim.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Code also, at category S66:<\/strong> any associated open wound, S61.-. A laceration usually breaks the skin, so an S61 code often belongs on the same claim.<\/li>\n\n\n\n<li><strong>Type 2 Excludes, at category S66:<\/strong> sprain of joints and ligaments of wrist and hand, S63.-. Report both codes when both injuries are documented, so a wrist sprain such as <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s63501d\/\">S63.501D<\/a> sits alongside S66.527S.<\/li>\n\n\n\n<li><strong>Type 2 Excludes, at subcategory S66.5:<\/strong> injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level, S66.4-. A thumb injury alongside the little finger needs its own code.<\/li>\n\n\n\n<li><strong>Type 2 Excludes, at block S60-S69:<\/strong> burns and corrosions T20-T32, frostbite T33-T34, and venomous insect bite or sting T63.4.<\/li>\n\n\n\n<li><strong>Chapter note, at S00-T88:<\/strong> add a secondary external cause code from Chapter 20 to show how the injury happened. Add Z18.- as well if a foreign body was retained.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Note what is absent here. There is no Excludes1 anywhere in the chain above S66.527S, so nothing on this list is a never-code-together pairing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Type 2 Excludes means the opposite. The two conditions can coexist, and each gets its own code when the record supports it. A cut nerve or blood vessel in the same hand works the same way, so <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s64498s\/\">S64.498S<\/a> or <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s65919s\/\">S65.919S<\/a> can sit on the claim too.<\/p>\n\n\n\n<h2 id=\"h-clinical-terminology-that-resolves-to-this-code\" class=\"wp-block-heading\">Clinical terminology that resolves to this code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ICD-10-CM publishes no approximate synonyms or inclusion terms under S66.52-, so the tabular list gives you nothing beyond the descriptor itself. Coders have to work from what providers actually write. These are the phrasings that resolve to S66.527S.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sequela of laceration of left little finger intrinsic muscle, fascia and tendon<\/li>\n\n\n\n<li>Late effect of left small finger intrinsic muscle laceration<\/li>\n\n\n\n<li>Left pinky hypothenar muscle laceration, healed with residual weakness<\/li>\n\n\n\n<li>Left fifth digit palmar fascia laceration at hand level, sequela<\/li>\n\n\n\n<li>Residual abduction deficit after left little finger laceration repair<\/li>\n\n\n\n<li>Post-repair intrinsic tendon adhesion, left little finger<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">None of these is a separate code. Each one still needs three confirmations before you assign S66.527S. The digit is the little finger, the side is left, and the encounter treats a residual effect rather than the wound.<\/p>\n\n\n\n<h2 id=\"h-documentation-requirements-for-s66-527s\" class=\"wp-block-heading\">Documentation requirements for S66.527S<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A sequela claim lives or dies on the causal link. The note has to connect today&#8217;s complaint to a specific past laceration, and it has to name the digit and the side. Five elements carry most of that weight.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The prior laceration, with a date:<\/strong> state that the current problem follows a laceration of the left little finger. A month and year is enough, and it is what an auditor looks for first.<\/li>\n\n\n\n<li><strong>The current residual effect:<\/strong> name it specifically. Tendon adhesion, loss of finger abduction, muscle contracture, or scar tethering all work. Left hand pain on its own does not.<\/li>\n\n\n\n<li><strong>Digit and side:<\/strong> left little finger, written out. A note that says hand or finger without either detail forces the unspecified code S66.529S.<\/li>\n\n\n\n<li><strong>The structure and the level:<\/strong> record whether intrinsic muscle, fascia, tendon, or a combination was cut, and confirm the wrist and hand level. This is what separates S66.5- from S66.1- and S66.3-.<\/li>\n\n\n\n<li><strong>Healing status:<\/strong> say that the acute phase is over. Wording such as the wound has healed and the patient now presents with is what justifies S over D.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pabau.com\/features\/patient-intake-software\/\">Digital intake forms<\/a> can collect the injury date, the affected side, and the current deficit before the clinician walks in. <a href=\"https:\/\/pabau.com\/blog\/clinical-documentation-software\/\">Clinical documentation software<\/a> then keeps those answers in the note itself, which cuts the query list a coder sends back after the visit.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/cdn.pabau.com\/cdn\/attachments\/pulse\/content-engine\/diagnostic_codes\/icd-10-code-s66520s\/customizable-consent-and-intake-forms.webp\" alt=\"Customizable consent and intake forms in Pabau\"\/><figcaption class=\"wp-element-caption\"><em>Pabau&#8217;s multi-step intake forms can require the injury date and the affected side, so a sequela note is never missing laterality.<\/em><\/figcaption><\/figure>\n\n\n\n<div style=\"height:35px;width:800px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"h-billing-and-reimbursement-guidance-for-a-sequela-claim\" class=\"wp-block-heading\">Billing and reimbursement guidance for a sequela claim<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S66.527S is billable, but payment turns on sequencing and support rather than on the code itself. Payers look hard at these claims because the injury they name has already healed. Six points decide most outcomes.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sequence the residual condition first:<\/strong> common partners are M62.442 contracture of muscle in the left hand and M62.542 muscle wasting in the left hand. M25.642 stiffness of the left hand, <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-m79645\/\">M79.645<\/a> pain in left fingers, and L90.5 scar conditions also qualify. S66.527S follows whichever one leads.<\/li>\n\n\n\n<li><strong>Never report an acute character alongside S:<\/strong> S66.527A and S66.527D both describe active treatment. Pairing either with S66.527S reads as a documentation conflict.<\/li>\n\n\n\n<li><strong>Carry S through the external cause code:<\/strong> the Chapter 20 code takes the sequela character too. An A on the external cause code beside an S on the injury code is an easy edit to trip.<\/li>\n\n\n\n<li><strong>Expect no fee schedule entry:<\/strong> an ICD-10-CM diagnosis code carries no payment rate. The Physician Fee Schedule prices the CPT and HCPCS services you bill, and S66.527S supports medical necessity for them.<\/li>\n\n\n\n<li><strong>Know the inpatient grouping:<\/strong> S66.527S groups to MS-DRG 604 or 605 under MDC 09, trauma to the skin, subcutaneous tissue and breast. Most sequela encounters are outpatient, so this rarely applies.<\/li>\n\n\n\n<li><strong>Check therapy caps before scheduling:<\/strong> some plans limit rehabilitation visits per diagnosis per year. Confirm the limit before booking a long course of <a href=\"https:\/\/pabau.com\/industry\/occupational-therapy-software\/\">occupational therapy<\/a> or hand rehab.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Denials on sequela claims are almost always documentation problems wearing a coding costume. When the note names the original injury, roughly when it happened, and the deficit left behind, the claim usually holds. Capturing those three details during the visit costs far less staff time than reworking a denial later.<\/p>\n\n\n\n<h2 id=\"h-how-pabau-supports-accurate-icd-10-sequela-coding\" class=\"wp-block-heading\">How Pabau supports accurate ICD-10 sequela coding<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sequela coding fails at the documentation stage rather than the coding stage. When a note never links the old laceration to today&#8217;s deficit, the coder must choose between an unspecified code and a query. Both cost money.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Practice management software like Pabau handles that upstream. Structured note templates prompt the provider for encounter type, injury history, and laterality while the patient is still in the room. The coder then works from a complete chart instead of chasing one.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pabau&#8217;s client record keeps every encounter for a patient on one timeline, so the original repair and today&#8217;s rehab visit sit side by side. A coder can then prove the causal relationship without opening a second system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pabau.com\/features\/ai-medical-scribe\/\">Pabau Scribe<\/a>, our AI scribe, drafts the note from the consultation itself. Anatomical detail stays in the record rather than in the clinician&#8217;s memory.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/cdn.pabau.com\/cdn\/attachments\/pulse\/content-engine\/diagnostic_codes\/icd-10-code-s66520s\/detailed-client-records-in-pabau.webp\" alt=\"Detailed client records in Pabau\"\/><figcaption class=\"wp-element-caption\"><em>Pabau&#8217;s client record holds medical history, prior treatments, and every follow-up on one timeline, so the causal link for S66.527S is easy to evidence.<\/em><\/figcaption><\/figure>\n\n\n\n<div style=\"height:35px;width:800px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">On the billing side, Pabau&#8217;s <a href=\"https:\/\/pabau.com\/features\/claims-management-software\/\">claims management software<\/a> submits and tracks claims from the same record the clinician documented in. Nothing gets retyped, so the diagnosis codes on the claim match the note behind them.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/cdn.pabau.com\/cdn\/attachments\/pulse\/content-engine\/diagnostic_codes\/icd-10-code-s66520s\/automate-claims-through-healthcode.webp\" alt=\"Automate claims and billing with Pabau\"\/><figcaption class=\"wp-element-caption\"><em>Pabau&#8217;s checkout and claims tools invoice the payer straight from the visit record, so a sequela claim leaves the practice complete.<\/em><\/figcaption><\/figure>\n\n\n\n<div style=\"height:35px;width:800px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n        <div id=\"book_a_demo\">\n            <div class=\"left-side\">\n                <div class=\"logo\">\n                    <img decoding=\"async\"\n                        src=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/01\/Logo.svg\"\n                        alt=\"Logo\"\n                        loading=\"lazy\"\n                    \/>\n                <\/div>\n\n                <h3 class=\"heading\">\n                    Cut sequela denials with better documentation                <\/h3>\n\n                <p class=\"description\">\n                    Pabau&#8217;s clinical records, intake forms, and claims tools help your team capture laterality, injury history, and the current deficit at the point of care. Codes like S66.527S then submit right the first time.                <\/p>\n\n                <div class=\"button-group\">\n                    <a href=\"\/book-demo\/\" class=\"btn btn-scale-effect btn-cta-color btn-md\">\n                        <span class=\"btn-text\">Book a demo<\/span>\n                        <div class=\"btn-icon btn-icon-right\" aria-hidden=\"true\">\n                            <svg\n                                width=\"14\"\n                                height=\"12\"\n                                viewBox=\"0 0 14 12\"\n                                fill=\"none\"\n                                xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n                            >\n                                <path\n                                    d=\"M0.75 4.77295C0.335786 4.77295 0 5.10874 0 5.52295C0 5.93716 0.335786 6.27295 0.75 6.27295V5.52295V4.77295ZM13.2803 6.05328C13.5732 5.76039 13.5732 5.28551 13.2803 4.99262L8.50736 0.219648C8.21447 -0.073245 7.73959 -0.073245 7.4467 0.219648C7.15381 0.512542 7.15381 0.987415 7.4467 1.28031L11.6893 5.52295L7.4467 9.76559C7.15381 10.0585 7.15381 10.5334 7.4467 10.8263C7.73959 11.1191 8.21447 11.1191 8.50736 10.8263L13.2803 6.05328ZM0.75 5.52295V6.27295L12.75 6.27295V5.52295V4.77295L0.75 4.77295V5.52295Z\"\n                                    fill=\"currentColor\"\n                                ><\/path>\n                            <\/svg>\n                        <\/div>\n                    <\/a>\n                <\/div>\n            <\/div>\n\n            <div class=\"right-side\">\n                <img decoding=\"async\"\n                    src=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/01\/Home-Page-Concept-4.webp\"\n                    alt=\"Pabau clinic management dashboard\"\n                    loading=\"lazy\"\n                \/>\n            <\/div>\n        <\/div>\n        \n\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The hard part of S66.527S is not the seventh character. It is the sixth. Two coders can agree the encounter is a sequela and still land on different digits. S66.520 through S66.529 look almost identical on a screen. Read the sixth character against the finger map before you submit, every time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Get that right and the rest follows. Sequence the residual condition first and S66.527S second, then give the external cause code the same seventh character. Add a note that names the injury date and the deficit left behind.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Practices that build those prompts into the visit stop losing time to queries. <a href=\"https:\/\/pabau.com\/book-demo\/\">Book a demo<\/a> to see how Pabau keeps injury history, laterality, and claims in one place.<\/p>\n\n\n        <div id=\"expert_picks\">\n            <div class=\"header\">\n                                    <img decoding=\"async\" src=\"https:\/\/pabau.com\/wp-content\/uploads\/2025\/11\/Expert-Picks.svg\" alt=\"Continue your research\" height=\"42\" width=\"42\">\n                                <h3>Continue your research<\/h3>\n            <\/div>\n            <div class=\"content\">\n                                                            <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Coding the open wound alongside the cut muscle?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s61311s\/\">ICD-10 code S61.311S<\/a> covers a left index finger laceration with nail damage from initial encounter to sequela.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Was the cut structure an extrinsic flexor?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s56125s\/\">ICD-10 code S56.125S<\/a> covers flexor tendon laceration of the right ring finger at forearm level.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Sprain rather than a laceration?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s63615s\/\">ICD-10 code S63.615S<\/a> walks through sequela sequencing for an unspecified sprain of the left ring finger.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Same digit, but the bone rather than the muscle?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s62606k\/\">ICD-10 code S62.606K<\/a> explains nonunion coding for a right little finger fracture.<\/p>\n                        <\/div>\n                                                                                <div class=\"item\">\n                            <div>\n                                <svg width=\"20\" height=\"27\" viewBox=\"0 0 20 27\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                    <path\n                                        d=\"M18.6223 14.3857C19.1246 13.8975 19.1246 13.1045 18.6223 12.6162L12.1938 6.36621C11.6915 5.87793 10.8759 5.87793 10.3737 6.36621C9.87143 6.85449 9.87143 7.64746 10.3737 8.13574L14.6125 12.2529H2.28571C1.57455 12.2529 1 12.8115 1 13.5029C1 14.1943 1.57455 14.7529 2.28571 14.7529H14.6085L10.3777 18.8701C9.87545 19.3584 9.87545 20.1514 10.3777 20.6396C10.8799 21.1279 11.6955 21.1279 12.1978 20.6396L18.6263 14.3896L18.6223 14.3857Z\"\n                                        fill=\"#54B2D3\" \/>\n                                <\/svg>\n                            <\/div>\n                            <p><strong>Muscle laceration sequela at another site?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s76129s\/\">ICD-10 code S76.129S<\/a> applies the same sequela rules to a quadriceps muscle laceration.<\/p>\n                        <\/div>\n                                                <\/div>\n        <\/div>\n    \n\n\n<h2 id=\"h-frequently-asked-questions\" class=\"wp-block-heading\">Frequently asked questions<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1786614678292\"><h3 class=\"schema-faq-question\">What does ICD-10 code S66.527S mean?<\/h3> <p class=\"schema-faq-answer\">S66.527S is a billable ICD-10-CM code for laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela. Use it once the laceration itself has healed. The patient is being treated for a lasting effect such as tendon adhesion, contracture, or loss of finger abduction.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786614678296\"><h3 class=\"schema-faq-question\">How do you sequence S66.527S on a claim?<\/h3> <p class=\"schema-faq-answer\">Code the residual condition first, then S66.527S, following ICD-10-CM Official Guidelines section I.B.10. Common first-listed partners include M62.442 contracture of muscle in the left hand and M62.542 muscle wasting in the left hand. M25.642 stiffness of the left hand and M79.645 pain in left fingers also work. Add a Chapter 20 external cause code carrying the same S seventh character.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786614678297\"><h3 class=\"schema-faq-question\">What documentation supports S66.527S?<\/h3> <p class=\"schema-faq-answer\">The note must reference the prior laceration, ideally with a month and year, and confirm both the little finger and the left side. It should name the current residual effect, state which structures were cut at wrist and hand level, and show that the acute phase has ended. That causal link is what distinguishes a sequela claim from a subsequent encounter claim.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786614678298\"><h3 class=\"schema-faq-question\">Which codes are closest to S66.527S?<\/h3> <p class=\"schema-faq-answer\">The nearest neighbors are S66.527A and S66.527D, the same injury at earlier encounters. S66.526S covers the right little finger, and S66.529S applies when the digit is undocumented. S66.517S covers a strain of the same structures, while S66.127S and S66.327S cover the extrinsic flexor and extensor tendons of the same finger. Thumb injuries sit in S66.4- instead.<\/p> <\/div> <\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ICD-10 code S66.527S covers laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela. It applies once the laceration has healed and a lasting deficit remains. A patient who returns nine months after a glass injury, still unable to spread the little finger, is coded here. The digit [&hellip;]<\/p>\n","protected":false},"author":84,"featured_media":177708,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_linkdex":"80","_yoast_wpseo_content_score":"90","_yoast_wpseo_is_cornerstone":"","_yoast_wpseo_keywordsynonyms":"[\"\",\"\",\"\",\"\"]","_yoast_wpseo_focuskw_text_input":"","_seo_original_html":"","footnotes":""},"categories":[1549,1550],"tags":[1680,1363],"class_list":["post-177709","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diagnostic-codes","category-icd-10-cm","tag-diagnostic-codes","tag-icd-10"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ICD-10 code S66.527S: left little finger laceration sequela<\/title>\n<meta name=\"description\" content=\"S66.527S covers left little finger muscle laceration sequela. It\u2019s billable in FY2026; code the residual first.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ICD-10 code S66.527S: left little finger laceration sequela\" \/>\n<meta property=\"og:description\" content=\"S66.527S covers left little finger muscle laceration sequela. It\u2019s billable in FY2026; code the residual first.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/\" \/>\n<meta property=\"og:site_name\" content=\"Pabau\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Pabau\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-14T08:39:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-14T12:24:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/08\/icd-10-code-s66520s.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Despina Petrushevska\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@pabaucrm\" \/>\n<meta name=\"twitter:site\" content=\"@pabaucrm\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Despina Petrushevska\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"16\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/\"},\"author\":{\"name\":\"Despina Petrushevska\",\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/#\\\/schema\\\/person\\\/80e6d36732fad68140a849f3c351449b\"},\"headline\":\"ICD-10 code S66.527S: left little finger laceration sequela\",\"datePublished\":\"2026-08-14T08:39:49+00:00\",\"dateModified\":\"2026-08-14T12:24:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/\"},\"wordCount\":3227,\"publisher\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/icd-10-code-s66520s.webp\",\"keywords\":[\"Diagnostic codes\",\"ICD-10\"],\"articleSection\":[\"Diagnostic Codes\",\"ICD-10-CM\"],\"inLanguage\":\"de\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/\",\"url\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/\",\"name\":\"ICD-10 code S66.527S: left little finger laceration sequela\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/icd-10-code-s66520s.webp\",\"datePublished\":\"2026-08-14T08:39:49+00:00\",\"dateModified\":\"2026-08-14T12:24:06+00:00\",\"description\":\"S66.527S covers left little finger muscle laceration sequela. 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Outside of work, she enjoys photography, weekend getaways, and finding inspiration in everyday experiences.\",\"url\":\"https:\\\/\\\/pabau.com\\\/de\\\/blog\\\/author\\\/despina-petrushevska\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678292\",\"position\":1,\"url\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678292\",\"name\":\"What does ICD-10 code S66.527S mean?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"S66.527S is a billable ICD-10-CM code for laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela. Use it once the laceration itself has healed. The patient is being treated for a lasting effect such as tendon adhesion, contracture, or loss of finger abduction.\",\"inLanguage\":\"de\"},\"inLanguage\":\"de\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678296\",\"position\":2,\"url\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678296\",\"name\":\"How do you sequence S66.527S on a claim?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Code the residual condition first, then S66.527S, following ICD-10-CM Official Guidelines section I.B.10. Common first-listed partners include M62.442 contracture of muscle in the left hand and M62.542 muscle wasting in the left hand. M25.642 stiffness of the left hand and M79.645 pain in left fingers also work. Add a Chapter 20 external cause code carrying the same S seventh character.\",\"inLanguage\":\"de\"},\"inLanguage\":\"de\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678297\",\"position\":3,\"url\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678297\",\"name\":\"What documentation supports S66.527S?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The note must reference the prior laceration, ideally with a month and year, and confirm both the little finger and the left side. It should name the current residual effect, state which structures were cut at wrist and hand level, and show that the acute phase has ended. That causal link is what distinguishes a sequela claim from a subsequent encounter claim.\",\"inLanguage\":\"de\"},\"inLanguage\":\"de\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678298\",\"position\":4,\"url\":\"https:\\\/\\\/pabau.com\\\/de\\\/diagnostic-codes\\\/icd-10-code-s66527s\\\/#faq-question-1786614678298\",\"name\":\"Which codes are closest to S66.527S?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The nearest neighbors are S66.527A and S66.527D, the same injury at earlier encounters. S66.526S covers the right little finger, and S66.529S applies when the digit is undocumented. S66.517S covers a strain of the same structures, while S66.127S and S66.327S cover the extrinsic flexor and extensor tendons of the same finger. 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The patient is being treated for a lasting effect such as tendon adhesion, contracture, or loss of finger abduction.","inLanguage":"de"},"inLanguage":"de"},{"@type":"Question","@id":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/#faq-question-1786614678296","position":2,"url":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/#faq-question-1786614678296","name":"How do you sequence S66.527S on a claim?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Code the residual condition first, then S66.527S, following ICD-10-CM Official Guidelines section I.B.10. Common first-listed partners include M62.442 contracture of muscle in the left hand and M62.542 muscle wasting in the left hand. M25.642 stiffness of the left hand and M79.645 pain in left fingers also work. Add a Chapter 20 external cause code carrying the same S seventh character.","inLanguage":"de"},"inLanguage":"de"},{"@type":"Question","@id":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/#faq-question-1786614678297","position":3,"url":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/#faq-question-1786614678297","name":"What documentation supports S66.527S?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The note must reference the prior laceration, ideally with a month and year, and confirm both the little finger and the left side. It should name the current residual effect, state which structures were cut at wrist and hand level, and show that the acute phase has ended. That causal link is what distinguishes a sequela claim from a subsequent encounter claim.","inLanguage":"de"},"inLanguage":"de"},{"@type":"Question","@id":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/#faq-question-1786614678298","position":4,"url":"https:\/\/pabau.com\/de\/diagnostic-codes\/icd-10-code-s66527s\/#faq-question-1786614678298","name":"Which codes are closest to S66.527S?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The nearest neighbors are S66.527A and S66.527D, the same injury at earlier encounters. S66.526S covers the right little finger, and S66.529S applies when the digit is undocumented. S66.517S covers a strain of the same structures, while S66.127S and S66.327S cover the extrinsic flexor and extensor tendons of the same finger. Thumb injuries sit in S66.4- instead.","inLanguage":"de"},"inLanguage":"de"}]}},"yoast":{"focus_keyword":"ICD-10 code S66.527S","seo_title":"ICD-10 code S66.527S: left little finger laceration sequela","meta_description":"S66.527S covers left little finger muscle laceration sequela. 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