{"id":180137,"date":"2026-08-14T08:16:02","date_gmt":"2026-08-14T08:16:02","guid":{"rendered":"https:\/\/pabau.com\/?p=180137"},"modified":"2026-08-14T08:33:17","modified_gmt":"2026-08-14T08:33:17","slug":"icd-10-code-s6431xs","status":"publish","type":"post","link":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/","title":{"rendered":"ICD-10 code S64.31XS: Injury of digital nerve of right thumb, sequela"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"MedicalWebPage\",\"headline\":\"ICD-10 Code S64.31XS: Injury of digital nerve of right thumb, sequela\",\"description\":\"S64.31XS (Injury of digital nerve of right thumb, sequela) is a billable ICD-10-CM diagnosis code effective for FY2026. Learn about billable status, 7th character rules, sibling codes, documentation requirements, and billing guidance.\",\"url\":\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s6431xs\/\",\"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\":\"2026-02-15\",\"dateModified\":\"2026-02-15\"}<\/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>S64.31XS is a billable ICD-10-CM code for injury of the digital nerve of the right thumb, coded as a 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 7th character &#8216;S&#8217; applies only when the current condition is a documented late effect of a prior thumb nerve injury.<\/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>Sequela claims take two codes. The late-effect condition is sequenced first, then S64.31XS as the causative injury code.<\/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>Sibling codes S64.31XA and S64.31XD cover active treatment. Mixing them with the sequela code triggers denials.<\/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 captures ICD-10-CM codes inside the clinical note, so the sequela pairing is not missed at billing.<\/p>\n                        <\/div>\n                                                <\/div>\n        <\/div>\n    \n\n\n<p class=\"wp-block-paragraph\">ICD-10 code S64.31XS is a billable ICD-10-CM diagnosis code for injury of the digital nerve of the right thumb, sequela. It is valid for fiscal year 2026, effective for discharges and patient encounters on or after October 1, 2025.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use it when a patient presents with a documented late effect of a prior digital nerve injury to the right thumb. The active phase of treatment must already have concluded.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One rule decides most S64.31XS claims. The code never travels alone. The residual condition is sequenced first, and S64.31XS follows as the causative injury code.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sequela is also the phase of care coders get wrong most often. The switch away from active treatment depends on what the record says, not on how much time has passed.<\/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-code-details-at-a-glance\" class=\"wp-block-heading\">Code details at a glance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The table below summarizes the key metadata for S64.31XS, as confirmed by the CMS FY2026 tabular list and the <a href=\"https:\/\/icd10cmtool.cdc.gov\/\" target=\"_blank\" rel=\"nofollow noopener\">CDC\/NCHS ICD-10-CM official web tool<\/a>.<\/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\">S64.31XS<\/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\">Injury of digital nerve of right thumb, sequela<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Billable<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Yes, valid for reimbursement<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Code type<\/td>\n<td style=\"padding:12px 16px;color:#374151\">ICD-10-CM diagnosis code<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Effective date<\/td>\n<td style=\"padding:12px 16px;color:#374151\">October 1, 2025 (FY2026 edition)<\/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\">19 &#8211; Injury, poisoning, and certain other consequences of external causes (S00-T88)<\/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 &#8211; 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\">S64 &#8211; Injury of nerves 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\">7th character<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S &#8211; Sequela<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h2 id=\"h-code-hierarchy\" class=\"wp-block-heading\">Code hierarchy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Knowing where S64.31XS sits in the ICD-10-CM hierarchy helps coders pick the right parent category and apply the 7th character correctly. The full path from chapter to billable code is below.<\/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\">Level<\/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\">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<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Chapter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S00-T88<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury, poisoning, and certain other consequences of external causes<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Block<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S60-S69<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injuries to the wrist, hand, and fingers<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Category<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of nerves 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\">Subcategory<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64.3<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of digital nerve of thumb<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">Code (without 7th char.)<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64.31<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of digital nerve of right thumb<\/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 code<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64.31XS<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of digital nerve of right thumb, sequela<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">S64.31 is not billable on its own. It serves as the parent code. The placeholder character &#8220;X&#8221; fills the 6th character position, because no further anatomical detail exists at that level.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That makes the full seven-character code S64.31XS the only billable form for a sequela encounter. For the placeholder rules themselves, use the Official Guidelines for Coding and Reporting, published annually by the NCHS.<\/p>\n\n\n\n<h2 id=\"h-what-the-7th-character-s-means\" class=\"wp-block-heading\">What the 7th character &#8216;S&#8217; means<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ICD-10-CM uses 7th character extensions on injury codes to record the episode of care. For codes in the S60-S69 block, three options apply.<\/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\">7th 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\">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\">When to use<\/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\">A &#8211; Initial encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64.31XA<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of digital nerve of right thumb, initial encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">The patient is receiving active treatment for the injury for the first time<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">D &#8211; Subsequent encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64.31XD<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of digital nerve of right thumb, subsequent encounter<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Active treatment continues after the initial encounter, including routine follow-up care<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">S &#8211; Sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">S64.31XS<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury of digital nerve of right thumb, sequela<\/td>\n<td style=\"padding:12px 16px;color:#374151\">The injury has healed. The patient now has a late effect such as chronic numbness, paresthesia, or motor deficit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key distinction:<\/strong> The 7th character &#8220;S&#8221; does not mean the injury is ongoing. It means the original injury has resolved and left a residual condition behind.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Per the ICD-10-CM Official Guidelines for Coding and Reporting (Section I.C.19), sequela coding takes two codes. The sequela condition comes first, followed by the injury code carrying the &#8220;S&#8221; extension. That second code is a frequent omission on submitted claims.<\/p>\n\n\n\n<h2 id=\"h-sibling-codes-s64-31xa-and-s64-31xd\" class=\"wp-block-heading\">Sibling codes: S64.31XA and S64.31XD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">All three codes under S64.31 carry the same anatomical detail and differ only in the episode of care. Choosing the wrong sibling is a common audit trigger. It happens most often when S64.31XS is applied to a patient who is still in active treatment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hand injuries generate a long tail of visits, so the encounter character has to change as the phase of care does. Rehab-heavy specialties feel this most, since a thumb nerve laceration can run through therapy for months. A practice running on <a href=\"https:\/\/pabau.com\/industry\/physical-therapy-emr\/\">physical therapy EMR<\/a> or <a href=\"https:\/\/pabau.com\/industry\/occupational-therapy-software\/\">occupational therapy software<\/a> can tie each visit type to the right 7th character.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S64.31XA, initial encounter:<\/strong> Use it while the patient is receiving active treatment for the thumb nerve injury for the first time. Emergency visits, specialist consultations, and the first surgical repair all sit here.<\/li>\n\n\n\n<li><strong>S64.31XD, subsequent encounter:<\/strong> Use it at follow-up visits where active treatment for the same injury continues. Wound re-evaluations, splint checks, and medication adjustments during healing fall here.<\/li>\n\n\n\n<li><strong>S64.31XS, sequela:<\/strong> Use it once the original injury has healed or reached maximum medical improvement. The patient still has a residual condition caused by that injury, such as persistent paresthesia or reduced grip strength. Treatment at this visit targets the late effect.<\/li>\n<\/ul>\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>Document the causal link in the clinical note before applying S64.31XS. A line such as &#8216;right thumb paresthesia is a direct late effect of the digital nerve injury sustained on [date]&#8217; does the job. It satisfies the sequela documentation requirement and holds up if the claim is audited.<\/p>\n            <\/div>\n        <\/div>\n    \n\n\n<h2 id=\"h-clinical-description-injury-of-digital-nerve-of-right-thumb\" class=\"wp-block-heading\">Clinical description: Injury of digital nerve of right thumb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The digital nerves of the thumb are the paired proper palmar digital nerves running along its medial and lateral borders. They supply sensation to the volar surface of the thumb and to the nail bed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lacerations, crush injuries, and traction mechanisms cause most of these injuries, usually at work, in sport, or as a surgical complication. Damage to bone is coded separately, as with <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s62630k\/\">S62.630K<\/a> for a displaced distal phalanx fracture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When a right thumb digital nerve injury leaves a late effect that brings the patient back, that residual condition is what S64.31XS captures. Common sequelae include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Persistent numbness or paresthesia along the thumb&#8217;s volar surface<\/li>\n\n\n\n<li>Cold intolerance in the thumb<\/li>\n\n\n\n<li>Diminished two-point discrimination<\/li>\n\n\n\n<li>Chronic pain or allodynia at the original injury site<\/li>\n\n\n\n<li>Neuroma formation causing focal tenderness<\/li>\n\n\n\n<li>Reduced fine motor function in the right hand<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The line between a sequela and an ongoing acute injury matters clinically and administratively. A patient 14 months past a laceration with persistent numbness, no open wound, and no acute inflammation is a sequela. A patient three weeks post-surgery who still needs wound care sits in the subsequent encounter phase, coded S64.31XD.<\/p>\n\n\n\n<h2 id=\"h-approximate-synonyms-and-alternate-descriptions\" class=\"wp-block-heading\">Approximate synonyms and alternate descriptions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The following terms map to S64.31XS in clinical documentation and coding lookups. Coders will meet these phrases in physician notes and should read them as valid documentation for this code:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sequela of injury of digital nerve of right thumb<\/li>\n\n\n\n<li>Late effect of right thumb digital nerve injury<\/li>\n\n\n\n<li>Right thumb nerve injury, late effect<\/li>\n\n\n\n<li>Chronic sequela, digital nerve right thumb<\/li>\n\n\n\n<li>Residual deficit following digital nerve injury of right thumb<\/li>\n\n\n\n<li>Post-traumatic neuropathy, right thumb digital nerve<\/li>\n\n\n\n<li>Sequelae of nerve injury at wrist and hand level, right thumb<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These synonyms come from the approximate synonym index maintained in the <a href=\"https:\/\/www.cms.gov\/medicare\/coding-billing\/icd-10-codes\" target=\"_blank\" rel=\"nofollow noopener\">CMS ICD-10-CM annual update files<\/a>. When a note uses a term that is not on the list, confirm the anatomical detail before applying S64.31XS. Right thumb, digital nerve, and residual status all have to be present.<\/p>\n\n\n\n<h2 id=\"h-documentation-requirements-for-s64-31xs\" class=\"wp-block-heading\">Documentation requirements for S64.31XS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sequela coding is the ICD-10-CM category most often returned in post-payment audits. Three documentation elements are non-negotiable when using S64.31XS:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Prior injury record:<\/strong> The chart must document the original digital nerve injury of the right thumb, including date, mechanism, and initial findings. A reference to earlier treatment records, a surgical note, or an emergency department report satisfies this.<\/li>\n\n\n\n<li><strong>Nexus statement:<\/strong> The clinician has to link the current condition to the prior injury in words. &#8220;The patient&#8217;s thumb paresthesia is a sequela of the digital nerve laceration sustained on [date]&#8221; is the minimum.<\/li>\n\n\n\n<li><strong>Current late-effect condition:<\/strong> The visit note must name the residual condition being evaluated or managed, such as paresthesia, numbness, neuroma, or cold intolerance. The word &#8220;sequela&#8221; on its own does not suffice.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Per <a href=\"https:\/\/www.aapc.com\/codes\/icd-10-codes-range\/\" target=\"_blank\" rel=\"nofollow noopener\">AAPC ICD-10-CM coding resources<\/a>, S64.31XS is reported as an additional code after the code for the late-effect condition. If the patient has post-traumatic neuralgia of the right thumb as a sequela, the neuralgia code leads and S64.31XS follows. Practices with <a href=\"https:\/\/pabau.com\/blog\/hipaa-compliance-for-medical-offices\/\">HIPAA-compliant documentation<\/a> workflows are better placed to capture that pairing while the patient is still in the room.<\/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>Run a periodic audit of your S64.31XS claims and check that each one carries a paired late-effect code, sequenced first. Single-code sequela submissions are a common denial pattern. They usually point to a documentation habit rather than a coder error.<\/p>\n            <\/div>\n        <\/div>\n    \n\n\n<h2 id=\"h-icd-9-cm-crosswalk\" class=\"wp-block-heading\">ICD-9-CM crosswalk<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For historical billing review, payer crosswalk analysis, or legacy system mapping, the ICD-9-CM equivalents for S64.31XS are shown below. Per the General Equivalence Mappings published in the CMS ICD-10 transition files, there is no precise one-to-one match. ICD-9-CM did not use encounter-specific 7th character extensions.<\/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\">ICD-9-CM 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\">Mapping type<\/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\">955.6<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Injury to digital nerve, upper limb<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Approximate, with no laterality or encounter-type detail in ICD-9<\/td>\n<\/tr>\n<tr style=\"border-bottom:1px solid #E8ECF0;background:#F9FAFB\">\n<td style=\"padding:12px 16px;font-weight:600;color:#121D36\">907.4<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Late effect of injury to peripheral nerve of shoulder girdle and upper limb<\/td>\n<td style=\"padding:12px 16px;color:#374151\">Approximate, covers peripheral nerve late effects but not the digital nerve of the thumb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">Both ICD-9-CM codes are approximate equivalents only. The sequela concept in ICD-10-CM mapped loosely to ICD-9-CM late effect codes in the 9xx series, with no encounter-type differentiation. The <a href=\"https:\/\/icd.who.int\/browse10\/2019\/en\" target=\"_blank\" rel=\"nofollow noopener\">WHO ICD-10 browser<\/a> gives the international equivalent for work outside the US system.<\/p>\n\n\n\n<h2 id=\"h-how-to-use-s64-31xs-in-medical-billing-and-coding\" class=\"wp-block-heading\">How to use S64.31XS in medical billing and coding<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Getting sequela coding right takes more than knowing the code exists. Two rules prevent most of the denials that follow when it is applied loosely.<\/p>\n\n\n\n<h3 id=\"h-sequence-the-codes-correctly\" class=\"wp-block-heading\">Sequence the codes correctly<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S64.31XS is not the primary diagnosis for the visit. The late-effect condition is sequenced first, and S64.31XS is listed as the additional causative injury code.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Reversing that order is the most common reason hand nerve sequela claims are rejected at adjudication. The same sequencing applies to other healed hand injuries, including <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s63615s\/\">S63.615S<\/a>.<\/p>\n\n\n\n<h3 id=\"h-do-not-apply-the-s-extension-prematurely\" class=\"wp-block-heading\">Do not apply the &#8216;S&#8217; extension prematurely<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Coders sometimes switch to S64.31XS as soon as a patient looks to have plateaued. The record has to state that the injury has resolved or reached maximum medical improvement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While active treatment continues, S64.31XD stays correct and S64.31XS is wrong. Payers treat the early switch as potential upcoding, so it is worth a second look before submission.<\/p>\n\n\n\n<h2 id=\"h-how-pabau-keeps-sequela-coding-accurate-at-the-point-of-care\" class=\"wp-block-heading\">How Pabau keeps sequela coding accurate at the point of care<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In most practices, sequela claims are coded after the visit is over. A coder opens the finished note and hunts for three things. Those are the prior injury, the nexus statement, and the current late effect. One of them is usually missing, so the claim goes out a code short or waits in a query queue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pabau.com\/blog\/practice-management-software\/\">Practice management software<\/a> like Pabau moves that decision into the note instead. Pabau&#8217;s <a href=\"https:\/\/pabau.com\/features\/claims-management-software\/\">claims management software<\/a> supports structured diagnosis capture alongside the clinical record, so the sequence can be checked before the claim is submitted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The prior injury also has to be reachable at the moment of coding. <a href=\"https:\/\/pabau.com\/features\/medical-records-management\/\">Patient record management<\/a> keeps earlier treatment notes, photos, and operative reports on the same client file. The causal documentation then sits in front of whoever codes the visit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The outcome is fewer single-code sequela submissions, fewer payer queries, and less rework for the billing team at month end.<\/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-s6431xs\/automate-claims-through-healthcode.webp\" alt=\"Pabau claims management screen with automated claim submission\"\/><figcaption class=\"wp-element-caption\"><em>Pabau&#8217;s claims management works from the same record as the diagnosis codes, so a sequela pairing stays intact through submission.<\/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                    Capture sequela codes while the patient is still in the room                <\/h3>\n\n                <p class=\"description\">\n                    Pabau puts ICD-10-CM code capture next to the clinical note, so the late-effect condition and the causative injury code are recorded together. Practices submit cleaner claims and spend less time reworking denials.                <\/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 practice 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\">S64.31XS is a small code with a strict evidentiary standard. It says that an injury is over and that something it caused is not. If the note cannot show both halves of that story, the code is the wrong one, whatever the calendar says.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The practical move is to settle the encounter character while the patient is in front of you, and to write the nexus sentence then. A coder inherits that decision instead of reconstructing it later.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do that consistently and the paired late-effect code stops going missing, which is where most of these denials come from. <a href=\"https:\/\/pabau.com\/book-demo\/\">Book a demo<\/a> to see how Pabau captures ICD-10-CM codes and sequela documentation inside the clinical note.<\/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 another hand injury that has healed?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s63615s\/\">S63.615S<\/a> applies the same sequela logic to a finger sprain.<\/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>Not sure the patient has left active treatment yet?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s63295d\/\">S63.295D<\/a> shows how the subsequent encounter character works in hand injuries.<\/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>Need the sequela rules for fracture care?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s72411s\/\">S72.411S<\/a> covers late-effect documentation after a femur 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>Coding a late effect after soft tissue trauma?<\/strong> <a href=\"https:\/\/pabau.com\/diagnostic-codes\/icd-10-code-s76129s\/\">S76.129S<\/a> walks through the same two-code pairing for a muscle laceration.<\/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>Want the record to show when active treatment ended?<\/strong> Our <a href=\"https:\/\/pabau.com\/templates\/patient-discharge-form\/\">patient discharge form<\/a> gives you a dated close-out for the injury episode.<\/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-1786693594706\"><h3 class=\"schema-faq-question\">What does ICD-10 code S64.31XS mean?<\/h3> <p class=\"schema-faq-answer\">S64.31XS is a billable ICD-10-CM code for injury of the digital nerve of the right thumb, sequela. Use it when a patient has a residual condition, such as chronic numbness or paresthesia, caused by an earlier injury to that nerve. Active treatment for the original injury must already be finished.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786693594707\"><h3 class=\"schema-faq-question\">Is S64.31XS a billable ICD-10 code?<\/h3> <p class=\"schema-faq-answer\">Yes. S64.31XS is a billable ICD-10-CM diagnosis code, valid for fiscal year 2026 and effective from October 1, 2025. It supports reimbursement when the documentation shows a sequela of a right thumb digital nerve injury.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786693594708\"><h3 class=\"schema-faq-question\">What is the difference between S64.31XA, S64.31XD, and S64.31XS?<\/h3> <p class=\"schema-faq-answer\">The three codes differ only by episode of care. S64.31XA covers the initial encounter, when the patient first receives active treatment. S64.31XD covers subsequent encounters while active treatment continues. S64.31XS applies once the injury has healed and the patient presents with a late effect of it.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786693594709\"><h3 class=\"schema-faq-question\">When should the sequela 7th character be used for nerve injuries?<\/h3> <p class=\"schema-faq-answer\">Use the 7th character &#8216;S&#8217; once the original nerve injury has resolved or reached maximum medical improvement. The visit itself has to be about a residual condition that the earlier injury caused. Documentation must state that causal relationship in words.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786693594710\"><h3 class=\"schema-faq-question\">How do you code a sequela of a digital nerve injury?<\/h3> <p class=\"schema-faq-answer\">Use two codes. The specific residual condition comes first, such as post-traumatic neuralgia or paresthesia. S64.31XS follows as the causative injury code. Section I.C.19 of the ICD-10-CM Official Guidelines sets that order, and payers apply it.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786693594711\"><h3 class=\"schema-faq-question\">What is the ICD-9-CM equivalent of S64.31XS?<\/h3> <p class=\"schema-faq-answer\">Two ICD-9-CM codes come closest. 955.6 covers injury to digital nerve, upper limb. 907.4 covers late effect of injury to peripheral nerve of shoulder girdle and upper limb. Neither is an exact match, because ICD-9-CM had no 7th character extensions for encounter type.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1786693594712\"><h3 class=\"schema-faq-question\">What is the parent code for S64.31XS?<\/h3> <p class=\"schema-faq-answer\">The parent code is S64.31, injury of digital nerve of right thumb, which is not billable on its own. S64.31XS is the billable form for the sequela phase of care. The broader category is S64, injury of nerves at wrist and hand level, inside the S60-S69 block.<\/p> <\/div> <\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>ICD-10 code S64.31XS is a billable ICD-10-CM diagnosis code for injury of the digital nerve of the right thumb, sequela. It is valid for fiscal year 2026, effective for discharges and patient encounters on or after October 1, 2025. Use it when a patient presents with a documented late effect of a prior digital nerve [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":180136,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_linkdex":"77","_yoast_wpseo_content_score":"60","_yoast_wpseo_is_cornerstone":"","_yoast_wpseo_keywordsynonyms":"[\"\",\"\",\"\",\"\",\"\",\"\"]","_yoast_wpseo_focuskw_text_input":"","_seo_original_html":"","footnotes":""},"categories":[1549,1550],"tags":[2972,1543,2394,1363],"class_list":["post-180137","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diagnostic-codes","category-icd-10-cm","tag-clinical-coding","tag-clinical-documentation","tag-coding-compliance","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 S64.31XS: when to code a thumb nerve sequela<\/title>\n<meta name=\"description\" content=\"S64.31XS covers a healed right thumb digital nerve injury. Code the residual condition first, then S64.31XS as the cause.\" \/>\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\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ICD-10 code S64.31XS: when to code a thumb nerve sequela\" \/>\n<meta property=\"og:description\" content=\"S64.31XS covers a healed right thumb digital nerve injury. Code the residual condition first, then S64.31XS as the cause.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/\" \/>\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=\"2026-08-14T08:16:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-14T08:33:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pabau.com\/wp-content\/uploads\/2026\/08\/icd-10-code-s6431xs.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=\"Maja Popovska\" \/>\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=\"Geschreven door\" \/>\n\t<meta name=\"twitter:data1\" content=\"Maja Popovska\" \/>\n\t<meta name=\"twitter:label2\" content=\"Geschatte leestijd\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/\"},\"author\":{\"name\":\"Maja Popovska\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/#\\\/schema\\\/person\\\/b00aec1dd379f0ddcf6137d78e2a21db\"},\"headline\":\"ICD-10 code S64.31XS: Injury of digital nerve of right thumb, sequela\",\"datePublished\":\"2026-08-14T08:16:02+00:00\",\"dateModified\":\"2026-08-14T08:33:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/\"},\"wordCount\":2334,\"publisher\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/icd-10-code-s6431xs.webp\",\"keywords\":[\"Clinical Coding\",\"Clinical Documentation\",\"Coding Compliance\",\"ICD-10\"],\"articleSection\":[\"Diagnostic Codes\",\"ICD-10-CM\"],\"inLanguage\":\"nl-NL\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/\",\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/\",\"name\":\"ICD-10 code S64.31XS: when to code a thumb nerve sequela\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/icd-10-code-s6431xs.webp\",\"datePublished\":\"2026-08-14T08:16:02+00:00\",\"dateModified\":\"2026-08-14T08:33:17+00:00\",\"description\":\"S64.31XS covers a healed right thumb digital nerve injury. 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It combines scheduling, electronic health records, clinical forms, payments, marketing automation, reporting, and patient engagement tools into one secure cloud system to help practices streamline operations and grow their business.\",\"foundingDate\":\"2011-10-20\",\"numberOfEmployees\":{\"@type\":\"QuantitativeValue\",\"minValue\":\"201\",\"maxValue\":\"500\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/#\\\/schema\\\/person\\\/b00aec1dd379f0ddcf6137d78e2a21db\",\"name\":\"Maja Popovska\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"nl-NL\",\"@id\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-Maja-Popovska_WP-1-96x96.jpeg\",\"url\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-Maja-Popovska_WP-1-96x96.jpeg\",\"contentUrl\":\"https:\\\/\\\/pabau.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-Maja-Popovska_WP-1-96x96.jpeg\",\"caption\":\"Maja Popovska\"},\"description\":\"Maja is a Senior Content Writer at Pabau, where she covers everything from practice management and compliance to medical aesthetics and patient experience. Off the clock: binging true crime docuseries, baking and dreaming about travel.\",\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/blog\\\/author\\\/maja-popovska\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594706\",\"position\":1,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594706\",\"name\":\"What does ICD-10 code S64.31XS mean?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"S64.31XS is a billable ICD-10-CM code for injury of the digital nerve of the right thumb, sequela. Use it when a patient has a residual condition, such as chronic numbness or paresthesia, caused by an earlier injury to that nerve. Active treatment for the original injury must already be finished.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594707\",\"position\":2,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594707\",\"name\":\"Is S64.31XS a billable ICD-10 code?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. S64.31XS is a billable ICD-10-CM diagnosis code, valid for fiscal year 2026 and effective from October 1, 2025. It supports reimbursement when the documentation shows a sequela of a right thumb digital nerve injury.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594708\",\"position\":3,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594708\",\"name\":\"What is the difference between S64.31XA, S64.31XD, and S64.31XS?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The three codes differ only by episode of care. S64.31XA covers the initial encounter, when the patient first receives active treatment. S64.31XD covers subsequent encounters while active treatment continues. S64.31XS applies once the injury has healed and the patient presents with a late effect of it.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594709\",\"position\":4,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594709\",\"name\":\"When should the sequela 7th character be used for nerve injuries?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Use the 7th character 'S' once the original nerve injury has resolved or reached maximum medical improvement. The visit itself has to be about a residual condition that the earlier injury caused. Documentation must state that causal relationship in words.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594710\",\"position\":5,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594710\",\"name\":\"How do you code a sequela of a digital nerve injury?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Use two codes. The specific residual condition comes first, such as post-traumatic neuralgia or paresthesia. S64.31XS follows as the causative injury code. Section I.C.19 of the ICD-10-CM Official Guidelines sets that order, and payers apply it.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594711\",\"position\":6,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594711\",\"name\":\"What is the ICD-9-CM equivalent of S64.31XS?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Two ICD-9-CM codes come closest. 955.6 covers injury to digital nerve, upper limb. 907.4 covers late effect of injury to peripheral nerve of shoulder girdle and upper limb. Neither is an exact match, because ICD-9-CM had no 7th character extensions for encounter type.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594712\",\"position\":7,\"url\":\"https:\\\/\\\/pabau.com\\\/nl\\\/diagnostic-codes\\\/icd-10-code-s6431xs\\\/#faq-question-1786693594712\",\"name\":\"What is the parent code for S64.31XS?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The parent code is S64.31, injury of digital nerve of right thumb, which is not billable on its own. S64.31XS is the billable form for the sequela phase of care. The broader category is S64, injury of nerves at wrist and hand level, inside the S60-S69 block.\",\"inLanguage\":\"nl-NL\"},\"inLanguage\":\"nl-NL\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"ICD-10 code S64.31XS: when to code a thumb nerve sequela","description":"S64.31XS covers a healed right thumb digital nerve injury. Code the residual condition first, then S64.31XS as the cause.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/","og_locale":"nl_NL","og_type":"article","og_title":"ICD-10 code S64.31XS: when to code a thumb nerve sequela","og_description":"S64.31XS covers a healed right thumb digital nerve injury. 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Off the clock: binging true crime docuseries, baking and dreaming about travel.","url":"https:\/\/pabau.com\/nl\/blog\/author\/maja-popovska\/"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594706","position":1,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594706","name":"What does ICD-10 code S64.31XS mean?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"S64.31XS is a billable ICD-10-CM code for injury of the digital nerve of the right thumb, sequela. Use it when a patient has a residual condition, such as chronic numbness or paresthesia, caused by an earlier injury to that nerve. Active treatment for the original injury must already be finished.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594707","position":2,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594707","name":"Is S64.31XS a billable ICD-10 code?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. S64.31XS is a billable ICD-10-CM diagnosis code, valid for fiscal year 2026 and effective from October 1, 2025. It supports reimbursement when the documentation shows a sequela of a right thumb digital nerve injury.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594708","position":3,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594708","name":"What is the difference between S64.31XA, S64.31XD, and S64.31XS?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The three codes differ only by episode of care. S64.31XA covers the initial encounter, when the patient first receives active treatment. S64.31XD covers subsequent encounters while active treatment continues. S64.31XS applies once the injury has healed and the patient presents with a late effect of it.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594709","position":4,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594709","name":"When should the sequela 7th character be used for nerve injuries?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Use the 7th character 'S' once the original nerve injury has resolved or reached maximum medical improvement. The visit itself has to be about a residual condition that the earlier injury caused. Documentation must state that causal relationship in words.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594710","position":5,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594710","name":"How do you code a sequela of a digital nerve injury?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Use two codes. The specific residual condition comes first, such as post-traumatic neuralgia or paresthesia. S64.31XS follows as the causative injury code. Section I.C.19 of the ICD-10-CM Official Guidelines sets that order, and payers apply it.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594711","position":6,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594711","name":"What is the ICD-9-CM equivalent of S64.31XS?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Two ICD-9-CM codes come closest. 955.6 covers injury to digital nerve, upper limb. 907.4 covers late effect of injury to peripheral nerve of shoulder girdle and upper limb. Neither is an exact match, because ICD-9-CM had no 7th character extensions for encounter type.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"},{"@type":"Question","@id":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594712","position":7,"url":"https:\/\/pabau.com\/nl\/diagnostic-codes\/icd-10-code-s6431xs\/#faq-question-1786693594712","name":"What is the parent code for S64.31XS?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The parent code is S64.31, injury of digital nerve of right thumb, which is not billable on its own. S64.31XS is the billable form for the sequela phase of care. The broader category is S64, injury of nerves at wrist and hand level, inside the S60-S69 block.","inLanguage":"nl-NL"},"inLanguage":"nl-NL"}]}},"yoast":{"focus_keyword":"ICD-10 code S64.31XS","seo_title":"ICD-10 code S64.31XS: when to code a thumb nerve sequela","meta_description":"S64.31XS covers a healed right thumb digital nerve injury. 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