S31
ICD-10Non-billable categoryOpn wnd abdomen, lower back, pelvis and external genitals
Official ICD-10-CM descriptor (FY2026)
Open wound of abdomen, lower back, pelvis and external genitals
S31 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- traumatic amputation of part of abdomen, lower back and pelvis (S38.2-, S38.3)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- open wound of hip (S71.00-S71.02)
- open fracture of pelvis (S32.1--S32.9 with 7th character B)
Code also
Two codes may be needed; sequencing depends on the reason for the encounter.
- any associated:
- spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)
- wound infection
7th character
- The appropriate 7th character is to be added to each code from category S31
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under S31
- S31.0Open wound of lower back and pelviscategory
- S31.1Open wound of abdominal wall w/o penetration into perit cavcategory
- S31.2Open wound of peniscategory
- S31.3Open wound of scrotum and testescategory
- S31.4Open wound of vagina and vulvacategory
- S31.5Open wound of unspecified external genital organscategory
- S31.6Open wound of abdominal wall w penetration into perit cavcategory
- S31.8Open wound of other parts of abdomen, lower back and pelviscategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.