S54.21XS — Injury of radial nerve at forearm level, right arm, sequela
Is S54.21XS billable?
Yes — S54.21XS is billable for FY2027. S54.21XS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S54.21XS may be submitted for encounters from October 1, 2026 through September 30, 2027.
S54.21XS at a glance
| Code | S54.21XS |
|---|---|
| Description | Injury of radial nerve at forearm level, right arm, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in S54.21XS?
In S54.21XS, the 7th character S means sequela. The 7th character is required for S54.21XS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S54.21XS group to?
S54.21XS sits in MDC 01 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 091Other Disorders of Nervous System with MCCmedical
- 092Other Disorders of Nervous System with CCmedical
- 093Other Disorders of Nervous System without CC/MCCmedical
How is S54.21XS listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S54.2, the nearest indexed parent of S54.21XS. Use them to find the family, then select the specific code.
- Injury › nerve NEC › radial
Use additional code — inherited from Chapter 19
Report an additional code alongside S54.21XS to fully describe the condition. S54.21XS is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S54.21XS, but a patient may have both at the same time. When documentation supports it, S54.21XS and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S54.21XS, but a patient may have both at the same time. When documentation supports it, S54.21XS and the excluded code may both be reported.
Excludes2 — not included here — inherited from S54
The conditions below are not part of S54.21XS, but a patient may have both at the same time. When documentation supports it, S54.21XS and the excluded code may both be reported.
- injury of nerves at wrist and hand level (S64.-)
Code also — inherited from S54
Two codes may be needed to describe the condition fully. Whether S54.21XS is sequenced first depends on the reason for the encounter.
- any associated open wound (S51.-)
How long has S54.21XS existed?
S54.21XS has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.