S31 — Open wound of abdomen, lower back, pelvis and external genitals
Is S31 billable?
No — S31 is a non-billable header code. S31 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath S31.
Billable codes under this header
- S31.20XAUnspecified open wound of penis, initial encounter
- S31.20XDUnspecified open wound of penis, subsequent encounter
- S31.20XSUnspecified open wound of penis, sequela
- S31.21XALaceration without foreign body of penis, initial encounter
- S31.21XDLaceration without foreign body of penis, subsequent encounter
- S31.21XSLaceration without foreign body of penis, sequela
- S31.22XALaceration with foreign body of penis, initial encounter
- S31.22XDLaceration with foreign body of penis, subsequent encounter
- S31.22XSLaceration with foreign body of penis, sequela
- S31.23XAPuncture wound without foreign body of penis, initial encounter
- S31.23XDPuncture wound without foreign body of penis, subsequent encounter
- S31.23XSPuncture wound without foreign body of penis, sequela
- S31.24XAPuncture wound with foreign body of penis, initial encounter
- S31.24XDPuncture wound with foreign body of penis, subsequent encounter
- S31.24XSPuncture wound with foreign body of penis, sequela
- S31.25XAOpen bite of penis, initial encounter
- S31.25XDOpen bite of penis, subsequent encounter
- S31.25XSOpen bite of penis, sequela
- S31.30XAUnspecified open wound of scrotum and testes, initial encounter
- S31.30XDUnspecified open wound of scrotum and testes, subsequent encounter
- S31.30XSUnspecified open wound of scrotum and testes, sequela
- S31.31XALaceration without foreign body of scrotum and testes, initial encounter
- S31.31XDLaceration without foreign body of scrotum and testes, subsequent encounter
- S31.31XSLaceration without foreign body of scrotum and testes, sequela
- S31.32XALaceration with foreign body of scrotum and testes, initial encounter
- S31.32XDLaceration with foreign body of scrotum and testes, subsequent encounter
- S31.32XSLaceration with foreign body of scrotum and testes, sequela
- S31.33XAPuncture wound without foreign body of scrotum and testes, initial encounter
- S31.33XDPuncture wound without foreign body of scrotum and testes, subsequent encounter
- S31.33XSPuncture wound without foreign body of scrotum and testes, sequela
- S31.34XAPuncture wound with foreign body of scrotum and testes, initial encounter
- S31.34XDPuncture wound with foreign body of scrotum and testes, subsequent encounter
- S31.34XSPuncture wound with foreign body of scrotum and testes, sequela
- S31.35XAOpen bite of scrotum and testes, initial encounter
- S31.35XDOpen bite of scrotum and testes, subsequent encounter
- S31.35XSOpen bite of scrotum and testes, sequela
- S31.40XAUnspecified open wound of vagina and vulva, initial encounter
- S31.40XDUnspecified open wound of vagina and vulva, subsequent encounter
- S31.40XSUnspecified open wound of vagina and vulva, sequela
- S31.41XALaceration without foreign body of vagina and vulva, initial encounter
- S31.41XDLaceration without foreign body of vagina and vulva, subsequent encounter
- S31.41XSLaceration without foreign body of vagina and vulva, sequela
- S31.42XALaceration with foreign body of vagina and vulva, initial encounter
- S31.42XDLaceration with foreign body of vagina and vulva, subsequent encounter
- S31.42XSLaceration with foreign body of vagina and vulva, sequela
- S31.43XAPuncture wound without foreign body of vagina and vulva, initial encounter
- S31.43XDPuncture wound without foreign body of vagina and vulva, subsequent encounter
- S31.43XSPuncture wound without foreign body of vagina and vulva, sequela
- S31.44XAPuncture wound with foreign body of vagina and vulva, initial encounter
- S31.44XDPuncture wound with foreign body of vagina and vulva, subsequent encounter
- S31.44XSPuncture wound with foreign body of vagina and vulva, sequela
- S31.45XAOpen bite of vagina and vulva, initial encounter
- S31.45XDOpen bite of vagina and vulva, subsequent encounter
- S31.45XSOpen bite of vagina and vulva, sequela
- S31.000AUnspecified open wound of lower back and pelvis without penetration into retroperitoneum, initial encounter
- S31.000DUnspecified open wound of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
- S31.000SUnspecified open wound of lower back and pelvis without penetration into retroperitoneum, sequela
- S31.001AUnspecified open wound of lower back and pelvis with penetration into retroperitoneum, initial encounter
- S31.001DUnspecified open wound of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
- S31.001SUnspecified open wound of lower back and pelvis with penetration into retroperitoneum, sequela
S31 at a glance
| Code | S31 |
|---|---|
| Description | Open wound of abdomen, lower back, pelvis and external genitals |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with S31 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here
The conditions below are not part of S31, but a patient may have both at the same time. When documentation supports it, S31 and the excluded code may both be reported.
Code also
Two codes may be needed to describe the condition fully. Whether S31 is sequenced first depends on the reason for the encounter.
Use additional code — inherited from Chapter 19
Report an additional code alongside S31 to fully describe the condition. S31 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, but a patient may have both at the same time. When documentation supports it, S31 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S30-S39
The conditions below are not part of S31, but a patient may have both at the same time. When documentation supports it, S31 and the excluded code may both be reported.
What codes fall under S31? (8)
- S31.0Open wound of lower back and pelvisnot billable
- S31.1Open wound of abdominal wall without penetration into peritoneal cavitynot billable
- S31.2Open wound of penisnot billable
- S31.3Open wound of scrotum and testesnot billable
- S31.4Open wound of vagina and vulvanot billable
- S31.5Open wound of unspecified external genital organsnot billable
- S31.6Open wound of abdominal wall with penetration into peritoneal cavitynot billable
- S31.8Open wound of other parts of abdomen, lower back and pelvisnot billable
How long has S31 existed?
S31 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.
Which codes are confused with S31?
ICD-10-CM declares these codes mutually exclusive with S31 — exactly one of each pair can be correct for a given encounter.