S89.91XA — Unspecified injury of right lower leg, initial encounter
Is S89.91XA billable?
Yes, but S89.91XA is an unspecified code. S89.91XA is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S89.91XA 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 S89.91XA.
S89.91XA at a glance
| Code | S89.91XA |
|---|---|
| Description | Unspecified injury of right lower 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 S89.91XA?
In S89.91XA, the 7th character A means initial encounter. The 7th character is required for S89.91XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S89.91XA group to?
S89.91XA sits in MDC 21 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.
- 913Traumatic Injury with MCCmedical
- 914Traumatic Injury without MCCmedical
How is S89.91XA listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S89.9, the nearest indexed parent of S89.91XA. Use them to find the family, then select the specific code.
- Injury › knee
- Injury › leg
Use additional code — inherited from Chapter 19
Report an additional code alongside S89.91XA to fully describe the condition. S89.91XA 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 S89.91XA, but a patient may have both at the same time. When documentation supports it, S89.91XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S80-S89
The conditions below are not part of S89.91XA, but a patient may have both at the same time. When documentation supports it, S89.91XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S89
The conditions below are not part of S89.91XA, but a patient may have both at the same time. When documentation supports it, S89.91XA and the excluded code may both be reported.
- other and unspecified injuries of ankle and foot (S99.-)
How long has S89.91XA existed?
S89.91XA 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.