S91.301S — Unspecified open wound, right foot, sequela
Is S91.301S billable?
Yes, but S91.301S is an unspecified code. S91.301S is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S91.301S 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 S91.301S — the more specific alternatives are listed below.
More specific alternatives
S91.301S at a glance
| Code | S91.301S |
|---|---|
| Description | Unspecified open wound, right foot, 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 S91.301S?
In S91.301S, the 7th character S means sequela. The 7th character is required for S91.301S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S91.301S group to?
S91.301S sits in MDC 09 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.
- 604Trauma to the Skin, Subcutaneous Tissue and Breast with MCCmedical
- 605Trauma to the Skin, Subcutaneous Tissue and Breast without MCCmedical
How is S91.301S listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S91.30, the nearest indexed parent of S91.301S. Use them to find the family, then select the specific code.
- Wound, open › foot
Excludes1 — never code together — inherited from S91
The conditions below can never be reported together with S91.301S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- open fracture of ankle, foot and toes (S92.-with 7th character B)
- traumatic amputation of ankle and foot (S98.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S91.301S to fully describe the condition. S91.301S 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 S91.301S, but a patient may have both at the same time. When documentation supports it, S91.301S and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S91.301S, but a patient may have both at the same time. When documentation supports it, S91.301S and the excluded code may both be reported.
Code also — inherited from S91
Two codes may be needed to describe the condition fully. Whether S91.301S is sequenced first depends on the reason for the encounter.
- any associated wound infection
How long has S91.301S existed?
S91.301S 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.