S84.20XA — Injury of cutaneous sensory nerve at lower leg level, unspecified leg, initial encounter
Is S84.20XA billable?
Yes, but S84.20XA is an unspecified code. S84.20XA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S84.20XA is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting S84.20XA — the more specific alternatives are listed below.
S84.20XA at a glance
| Code | S84.20XA |
|---|---|
| Description | Injury of cutaneous sensory nerve at lower leg level, unspecified leg, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in S84.20XA?
In S84.20XA, the 7th character A means initial encounter. The 7th character is required for S84.20XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S84.20XA group to?
S84.20XA sits in MDC 01 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.
- 073Cranial and Peripheral Nerve Disorders with MCCmedical
- 074Cranial and Peripheral Nerve Disorders without MCCmedical
How is S84.20XA listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S84.2, the nearest indexed parent of S84.20XA. Use them to find the family, then select the specific code.
- Injury › nerve NEC › cutaneous sensory › leg
Use additional code — inherited from Chapter 19
Report an additional code alongside S84.20XA to fully describe the condition. S84.20XA 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 S84.20XA, but a patient may have both at the same time. When documentation supports it, S84.20XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S80-S89
The conditions below are not part of S84.20XA, but a patient may have both at the same time. When documentation supports it, S84.20XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S84
The conditions below are not part of S84.20XA, but a patient may have both at the same time. When documentation supports it, S84.20XA and the excluded code may both be reported.
- injury of nerves at ankle and foot level (S94.-)
Code also — inherited from S84
Two codes may be needed to describe the condition fully. Whether S84.20XA is sequenced first depends on the reason for the encounter.
- any associated open wound (S81.-)
How long has S84.20XA existed?
S84.20XA 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.