S31.001S — Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, sequela
Is S31.001S billable?
Yes, but S31.001S is an unspecified code. S31.001S is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S31.001S 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 S31.001S — the more specific alternatives are listed below.
More specific alternatives
- S31.010SLaceration without foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
- S31.020SLaceration with foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
- S31.030SPuncture wound without foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
- S31.040SPuncture wound with foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
- S31.050SOpen bite of lower back and pelvis without penetration into retroperitoneum, sequela
S31.001S at a glance
| Code | S31.001S |
|---|---|
| Description | Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, 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 S31.001S?
In S31.001S, the 7th character S means sequela. The 7th character is required for S31.001S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S31.001S group to?
S31.001S 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 S31.001S listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S31.001, the nearest indexed parent of S31.001S. Use them to find the family, then select the specific code.
- Wound, open › back › lower › with penetration into retroperitoneal space
Excludes1 — never code together — inherited from S31
The conditions below can never be reported together with S31.001S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 19
Report an additional code alongside S31.001S to fully describe the condition. S31.001S 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 S31.001S, but a patient may have both at the same time. When documentation supports it, S31.001S and the excluded code may both be reported.
Excludes2 — not included here — inherited from S30-S39
The conditions below are not part of S31.001S, but a patient may have both at the same time. When documentation supports it, S31.001S and the excluded code may both be reported.
Excludes2 — not included here — inherited from S31
The conditions below are not part of S31.001S, but a patient may have both at the same time. When documentation supports it, S31.001S and the excluded code may both be reported.
Code also — inherited from S31
Two codes may be needed to describe the condition fully. Whether S31.001S is sequenced first depends on the reason for the encounter.
How long has S31.001S existed?
S31.001S 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.