ICD-10 code S48.922S: Partial left shoulder amputation – sequela

Key takeaways

ICD-10 code S48.922S covers a partial traumatic amputation of the left shoulder and upper arm, level unspecified, at a sequela encounter.

S48.922S is billable and specific, valid for FY2026 from October 1, 2025, and accepted for HIPAA-covered transactions.

The 7th character ‘S’ applies only to a condition caused by the earlier amputation, never to the original injury encounter.

Shoulder-level stump and scar revisions fall in the 23920-23921 range, which coders often confuse with the forearm range.

Practice management software like Pabau helps practices apply these codes accurately, cutting denials caused by 7th-character and laterality errors.

ICD-10 code S48.922S is a billable diagnosis code for the sequela of a partial traumatic amputation of the left shoulder and upper arm. The original documentation does not state the amputation level. The 7th character “S” applies when you treat a condition that the earlier amputation caused.

The amputation itself is coded on the encounter where it was treated. This reference covers billable status, the 7th character rules, the code hierarchy, sibling codes, the ICD-9-CM crosswalk, and the coding guidelines for sequela claims.

This article is reviewed for clinical accuracy and reflects the FY2026 ICD-10-CM tabular list. Code validity is reassessed annually on October 1. Always confirm against the current-year release before submitting claims.

ICD-10 code S48.922S: Definition, billable status, and FY2026 validity

S48.922S is a billable, specific ICD-10-CM code. It reports a diagnosis for reimbursement and is valid for fiscal year 2026, effective October 1, 2025. The code is accepted for HIPAA-covered transactions.

Verify the current-year edition with the CDC ICD-10-CM web tool before submitting claims, because code validity resets every October 1. The CMS ICD-10 codes page carries the update files and official descriptions.

Understanding the 7th character “S”: Sequela encounters in ICD-10-CM

The 7th character is the most error-prone element of traumatic injury coding. Every code in the S48 category requires one to indicate the encounter type. Choosing wrong is a leading cause of denials on post-amputation management visits.

A sequela is a complication or condition that the original injury caused. ICD-10-CM guidelines require the sequela code to be sequenced first, followed by a code for the specific condition. That second code names the phantom pain, the neuroma, or the scar.

The original traumatic amputation is coded on its own encounter, using S48.922A. Encounter characters work the same way across the rest of the shoulder region, so a follow-up humerus fracture visit takes S42.212D.

S48.922S in the ICD-10-CM hierarchy: S48 group and parent codes

Knowing where S48.922S sits in the hierarchy helps you select the most specific code and avoid non-billable parent codes. The full path from chapter to code runs like this:

• Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88)
• Section S40-S49: Injuries to the shoulder and upper arm
• Category S48: Traumatic amputation of shoulder and upper arm
• Subcategory S48.9: Traumatic amputation of shoulder and upper arm, level unspecified
• S48.92: Partial traumatic amputation of shoulder and upper arm, level unspecified
• S48.922: Partial traumatic amputation of left shoulder and upper arm, level unspecified
• S48.922S: The same code carrying the sequela character, which is the billable form

S48.922 is the parent code without a 7th character, and it is not billable on its own. A claim submitted with S48.922 alone will be rejected. Use the complete 7-character code S48.922S for sequela encounters.

The same extension pattern runs through the rest of Chapter 19, as S42.242K does for humerus fractures.

Sibling and related codes in the S48 group

S48.922S has several sibling codes within the S48.922 and S48.9 subcategories. They differ by laterality, level specificity, and encounter type. Choosing the wrong side is a frequent error that triggers medical necessity denials. Use the table below alongside the AAPC code lookup to confirm each encounter.

Practices managing post-amputation rehabilitation need the laterality right before they bill prosthetic fittings and functional sessions. Physical therapy EMR records tie each session to the diagnosis that justifies it.

Clinical description and approximate synonyms for S48.922S

S48.922S applies to conditions arising from an earlier partial traumatic amputation at the junction of the left shoulder and upper arm. The original documentation did not state the amputation level.

Partial means some tissue, bone, or vascular continuity remained intact at the time of injury. That separates it from the complete amputation codes in the S48.91x series.

Accepted clinical synonyms and approximate alternate descriptions for S48.922S include:

• Sequela of partial traumatic amputation of left shoulder
• Late effect of partial amputation of left upper extremity, shoulder level
• Sequela of partial amputation of left arm at shoulder level, unspecified
• Complication following partial traumatic amputation of left shoulder and upper arm
• Residual condition from a prior partial left shoulder amputation

Common presentations at sequela encounters include phantom limb pain, stump neuroma, heterotopic ossification, scar contracture, and myodesis-related complications. Code the specific condition separately and sequence it after S48.922S. Structured medical forms at intake capture these presentations before coding begins.

Coding guidelines for S48.922S sequela encounters

The ICD-10-CM Official Guidelines for Coding and Reporting give specific direction on sequela encounters for traumatic injuries. Five rules apply directly to S48.922S:

1. Code sequencing: The sequela code S48.922S is listed first. The code for the specific condition follows as an additional diagnosis. Phantom pain, for example, is coded under G54.6.
2. No time limit on sequela: No defined timeframe turns an injury into a sequela. Once the acute and subsequent phases are complete, any related condition is reportable as a sequela.
3. Causal linkage required: Documentation must establish a direct relationship between the earlier amputation and the current condition. A note that records only the current complaint does not support sequela coding.
4. Not for active wound care: If the wound from the original amputation is still under active treatment, use S48.922A or S48.922D.
5. Laterality must match the record: Code the side documented in the operative or emergency report. When the side is genuinely undocumented, S48.929S applies, but query the provider first.

Sequela records often span multiple providers and facilities, which makes HIPAA-compliant documentation harder to keep consistent. Systems that link the current encounter to the historical injury record, such as clinical documentation tools, cut the risk of a sequela denial.

ICD-9-CM crosswalk for S48.922S

ICD-9-CM was replaced by ICD-10-CM in the United States on October 1, 2015. The crosswalk from S48.922S back to ICD-9 is approximate. ICD-9-CM did not carry the same specificity for laterality, the partial versus complete distinction, or encounter-type characters.

ICD-9 code 905.9 was a broad late-effect category covering all traumatic amputations, whatever the site, side, or type. That makes the crosswalk approximate. For legacy record comparisons or research on historical Medicare claims, the ResDAC ICD codes guidance explains how the transition affects longitudinal analysis.

Associated CPT and HCPCS codes commonly billed with S48.922S

The CPT and HCPCS codes billed alongside S48.922S depend on the sequela being treated. The ICD-10 code describes the diagnosis. The procedure codes describe what happened at the visit. Common pairings vary by payer, so confirm coverage policies before submitting.

Shoulder-level revisions fall in the 23920-23921 range. Claims are often built from 25900-25931 instead, which covers forearm and wrist amputations rather than the shoulder. Graft coverage of the stump is billed separately, under codes such as 15050. Anesthesia for the revision is coded on its own too, as 01650 shows.

CPT and HCPCS pairings are context-dependent rather than universally required, and payer policies on medical necessity vary by code. Confirm local coverage determinations for your Medicare Administrative Contractor before billing prosthetic HCPCS codes.

Prosthetic training itself is usually delivered by therapists, and occupational therapy software has to carry the same laterality detail into the billing record.

Practice management software like Pabau tracks those payer-specific requirements for you. Pabau’s claims management attaches supporting documentation to each claim, so post-amputation sequela visits stop bouncing back for missing detail.

How Pabau supports accurate ICD-10 sequela coding

Sequela coding errors rarely start with the code itself. They start in the clinical note. Three details go missing most often:

• The causal link between the earlier amputation and the condition treated today.
• The documented side, which decides between S48.922S and S48.921S.
• A clear statement that the acute phase has ended, which separates sequela from subsequent care.

Pabau lets you build structured encounter templates for post-amputation visits. Each one prompts the clinician to record the side, name the earlier injury, and mark the encounter type. AI clinical documentation through Pabau Scribe, our AI scribe, captures the visit note as it happens.

Digital intake forms collect prior injury history at booking, so the sequela linkage exists before the clinician opens the chart. Across a course of post-amputation visits, that record keeps every claim pointing back to the same documented injury.

Reduce ICD-10 coding errors with better documentation

Pabau captures the clinical detail sequela coding needs. It links prior injury records to the current encounter, so claims go out with the causal statement, the side, and the encounter type already documented.

Book a demo

Conclusion

S48.922S is straightforward once the note is right. The wrong 7th character, the wrong side, and a missing causal statement account for most denials on this code. All three are settled in the note long before anyone picks a code.

Fix the template once and the code takes care of itself on every later visit. Automated clinical workflows keep that prompt in front of the clinician instead of relying on memory.

Book a demo to see how Pabau keeps sequela documentation ready before the claim goes out.

Continue your research

Coding a nonunion after a shoulder-region fracture? S42.442K shows how the K character changes what the claim needs.

Billing surgery on a traumatic amputation? 20816 walks through replantation coding and the modifiers that apply.

Working through the left humerus fracture codes? S42.475G covers transcondylar fracture documentation and its encounter characters.

Choosing AI tools that stay HIPAA-compliant? HIPAA compliant AI tools compares eight options for practices handling patient records.

Documenting a shoulder exam before you code it? Lift off test explains how to perform, interpret, and record the result.

Frequently asked questions