S94.21XD — Injury of deep peroneal nerve at ankle and foot level, right leg, subsequent encounter
Is S94.21XD billable?
Yes — S94.21XD is billable for FY2027. S94.21XD is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S94.21XD may be submitted for encounters from October 1, 2026 through September 30, 2027.
S94.21XD at a glance
| Code | S94.21XD |
|---|---|
| Description | Injury of deep peroneal nerve at ankle and foot level, right leg, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in S94.21XD?
In S94.21XD, the 7th character D means subsequent encounter. The 7th character is required for S94.21XD to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S94.21XD group to?
S94.21XD sits in MDC 23 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
How is S94.21XD listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S94.2, the nearest indexed parent of S94.21XD. Use them to find the family, then select the specific code.
- Injury › nerve NEC › foot › deep peroneal
- Injury › nerve NEC › peroneal › foot
Use additional code — inherited from Chapter 19
Report an additional code alongside S94.21XD to fully describe the condition. S94.21XD 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 S94.21XD, but a patient may have both at the same time. When documentation supports it, S94.21XD and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S94.21XD, but a patient may have both at the same time. When documentation supports it, S94.21XD and the excluded code may both be reported.
Code also — inherited from S94
Two codes may be needed to describe the condition fully. Whether S94.21XD is sequenced first depends on the reason for the encounter.
- any associated open wound (S91.-)
How long has S94.21XD existed?
S94.21XD 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.