S31: Open wound of abdomen, lower back, pelvis and external genitals
S31 is a non-billable header ICD-10-CM code for open wound of abdomen, lower back, pelvis and external genitals. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category S31
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
Other codes that can never be billed with S31
Their own Excludes1 notes name this code, so the conflict is not listed above.
- S30.87Other superficial bite of abdomen, lower back, pelvis and external genitals
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead S31
8 child codes. Green means billable.
- S31.0Open wound of lower back and pelvis
- S31.1Open wound of abdominal wall without penetration into peritoneal cavity
- S31.2Open wound of penis
- S31.3Open wound of scrotum and testes
- S31.4Open wound of vagina and vulva
- S31.5Open wound of unspecified external genital organs
- S31.6Open wound of abdominal wall with penetration into peritoneal cavity
- S31.8Open wound of other parts of abdomen, lower back and pelvis