S59.912A — Unspecified injury of left forearm, initial encounter
Is S59.912A billable?
Yes, but S59.912A is an unspecified code. S59.912A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S59.912A 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 S59.912A.
S59.912A at a glance
| Code | S59.912A |
|---|---|
| Description | Unspecified injury of left forearm, 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 S59.912A?
In S59.912A, the 7th character A means initial encounter. The 7th character is required for S59.912A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S59.912A group to?
S59.912A 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 S59.912A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S59.91, the nearest indexed parent of S59.912A. Use them to find the family, then select the specific code.
- Injury › forearm
Use additional code — inherited from Chapter 19
Report an additional code alongside S59.912A to fully describe the condition. S59.912A 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 S59.912A, but a patient may have both at the same time. When documentation supports it, S59.912A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S59.912A, but a patient may have both at the same time. When documentation supports it, S59.912A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S59
The conditions below are not part of S59.912A, but a patient may have both at the same time. When documentation supports it, S59.912A and the excluded code may both be reported.
- other and unspecified injuries of wrist and hand (S69.-)
How long has S59.912A existed?
S59.912A 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.