ICD-10-CM 2027 diagnosis code
S31Open wound of abdomen, lower back, pelvis and external genitals
Not billable — use a more specific code
S31 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.Short description: Opn wnd abdomen, lower back, pelvis and external genitals
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About S31
S31 is the ICD-10-CM diagnosis code for open wound of abdomen, lower back, pelvis and external genitals. It belongs to block S30-S39 (injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: S31.0 (pelvis), S31.1 (cavity), S31.2 (penis), S31.3 (testes), S31.4 (vulva), S31.5 (organs), S31.6 (cavity) and S31.8 (pelvis).
Don't report S31 together with the conditions in its Excludes1 note: traumatic amputation of part of abdomen, lower back and pelvis (S38.2-, S38.3).
The conditions in its Excludes2 note aren't part of S31, but may be coded alongside it if the patient has both: open wound of hip (S71.00-S71.02) and open fracture of pelvis (S32.1--S32.9 with 7th character B).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under S31
- S31.0Open wound of lower back and pelvis
- S31.00Unspecified open wound of lower back and pelvis
- S31.01Laceration without foreign body of lower back and pelvis
- S31.02Laceration with foreign body of lower back and pelvis
- S31.03Puncture wound without foreign body of lower back and pelvis
- S31.04Puncture wound with foreign body of lower back and pelvis
- S31.05Open bite of lower back and pelvis
- S31.1Open wound of abdominal wall without penetration into peritoneal cavity
- S31.10Unspecified open wound of abdominal wall without penetration into peritoneal cavity
- S31.100Unspecified open wound of abdominal wall, right upper quadrant without penetration into peritoneal cavity
- S31.101Unspecified open wound of abdominal wall, left upper quadrant without penetration into peritoneal cavity
- S31.102Unspecified open wound of abdominal wall, epigastric region without penetration into peritoneal cavity
- S31.103Unspecified open wound of abdominal wall, right lower quadrant without penetration into peritoneal cavity
- S31.104Unspecified open wound of abdominal wall, left lower quadrant without penetration into peritoneal cavity
- S31.105Unspecified open wound of abdominal wall, periumbilic region without penetration into peritoneal cavity
- S31.106Unspecified open wound of abdominal wall, right flank without penetration into peritoneal cavity
- S31.107Unspecified open wound of abdominal wall, left flank without penetration into peritoneal cavity
- S31.109Unspecified open wound of abdominal wall, unspecified quadrant without penetration into peritoneal cavity
- S31.10AUnspecified open wound of abdominal wall, unspecified flank without penetration into peritoneal cavity
- S31.11Laceration without foreign body of abdominal wall without penetration into peritoneal cavity
- S31.110Laceration without foreign body of abdominal wall, right upper quadrant without penetration into peritoneal cavity
- S31.111Laceration without foreign body of abdominal wall, left upper quadrant without penetration into peritoneal cavity
- S31.112Laceration without foreign body of abdominal wall, epigastric region without penetration into peritoneal cavity
- S31.113Laceration without foreign body of abdominal wall, right lower quadrant without penetration into peritoneal cavity
- S31.114Laceration without foreign body of abdominal wall, left lower quadrant without penetration into peritoneal cavity
- S31.115Laceration without foreign body of abdominal wall, periumbilic region without penetration into peritoneal cavity
- S31.116Laceration without foreign body of abdominal wall, right flank without penetration into peritoneal cavity
- S31.117Laceration without foreign body of abdominal wall, left flank without penetration into peritoneal cavity
- S31.119Laceration without foreign body of abdominal wall, unspecified quadrant without penetration into peritoneal cavity
- S31.11ALaceration without foreign body of abdominal wall, unspecified flank without penetration into peritoneal cavity
- S31.12Laceration with foreign body of abdominal wall without penetration into peritoneal cavity
- S31.120Laceration of abdominal wall with foreign body, right upper quadrant without penetration into peritoneal cavity
- S31.121Laceration of abdominal wall with foreign body, left upper quadrant without penetration into peritoneal cavity
- S31.122Laceration of abdominal wall with foreign body, epigastric region without penetration into peritoneal cavity
- S31.123Laceration of abdominal wall with foreign body, right lower quadrant without penetration into peritoneal cavity
- S31.124Laceration of abdominal wall with foreign body, left lower quadrant without penetration into peritoneal cavity
- S31.125Laceration of abdominal wall with foreign body, periumbilic region without penetration into peritoneal cavity
- S31.126Laceration with foreign body of abdominal wall, right flank without penetration into peritoneal cavity
- S31.127Laceration with foreign body of abdominal wall, left flank without penetration into peritoneal cavity
- S31.129Laceration of abdominal wall with foreign body, unspecified quadrant without penetration into peritoneal cavity
- S31.12ALaceration with foreign body of abdominal wall unspecified flank without penetration into peritoneal cavity
- S31.13Puncture wound of abdominal wall without foreign body without penetration into peritoneal cavity
- S31.130Puncture wound of abdominal wall without foreign body, right upper quadrant without penetration into peritoneal cavity
- S31.131Puncture wound of abdominal wall without foreign body, left upper quadrant without penetration into peritoneal cavity
- S31.132Puncture wound of abdominal wall without foreign body, epigastric region without penetration into peritoneal cavity
- S31.133Puncture wound of abdominal wall without foreign body, right lower quadrant without penetration into peritoneal cavity
- S31.134Puncture wound of abdominal wall without foreign body, left lower quadrant without penetration into peritoneal cavity
- S31.135Puncture wound of abdominal wall without foreign body, periumbilic region without penetration into peritoneal cavity
- S31.136Puncture wound of abdominal wall without foreign body, right flank without penetration into peritoneal cavity
- S31.137Puncture wound of abdominal wall without foreign body, left flank without penetration into peritoneal cavity
- S31.139Puncture wound of abdominal wall without foreign body, unspecified quadrant without penetration into peritoneal cavity
- S31.13APuncture wound of abdominal wall without foreign body, unspecified flank without penetration into peritoneal cavity
- S31.14Puncture wound of abdominal wall with foreign body without penetration into peritoneal cavity
- S31.140Puncture wound of abdominal wall with foreign body, right upper quadrant without penetration into peritoneal cavity
- S31.141Puncture wound of abdominal wall with foreign body, left upper quadrant without penetration into peritoneal cavity
- S31.142Puncture wound of abdominal wall with foreign body, epigastric region without penetration into peritoneal cavity
- S31.143Puncture wound of abdominal wall with foreign body, right lower quadrant without penetration into peritoneal cavity
- S31.144Puncture wound of abdominal wall with foreign body, left lower quadrant without penetration into peritoneal cavity
- S31.145Puncture wound of abdominal wall with foreign body, periumbilic region without penetration into peritoneal cavity
- S31.146Puncture wound of abdominal wall with foreign body, right flank without penetration into peritoneal cavity
- S31.147Puncture wound of abdominal wall with foreign body, left flank without penetration into peritoneal cavity
- S31.149Puncture wound of abdominal wall with foreign body, unspecified quadrant without penetration into peritoneal cavity
- S31.14APuncture wound of abdominal wall with foreign body, unspecified flank without penetration into peritoneal cavity
- S31.15Open bite of abdominal wall without penetration into peritoneal cavity
- S31.150Open bite of abdominal wall, right upper quadrant without penetration into peritoneal cavity
- S31.151Open bite of abdominal wall, left upper quadrant without penetration into peritoneal cavity
- S31.152Open bite of abdominal wall, epigastric region without penetration into peritoneal cavity
- S31.153Open bite of abdominal wall, right lower quadrant without penetration into peritoneal cavity
- S31.154Open bite of abdominal wall, left lower quadrant without penetration into peritoneal cavity
- S31.155Open bite of abdominal wall, periumbilic region without penetration into peritoneal cavity
- S31.156Open bite of abdominal wall, right flank without penetration into peritoneal cavity
- S31.157Open bite of abdominal wall, left flank without penetration into peritoneal cavity
- S31.159Open bite of abdominal wall, unspecified quadrant without penetration into peritoneal cavity
- S31.15AOpen bite of abdominal wall, unspecified flank without penetration into peritoneal cavity
- S31.10Unspecified open wound of abdominal wall without penetration into peritoneal cavity
- S31.2Open wound of penis
- S31.3Open wound of scrotum and testes
- S31.30Unspecified open wound of scrotum and testes
- S31.31Laceration without foreign body of scrotum and testes
- S31.32Laceration with foreign body of scrotum and testes
- S31.33Puncture wound without foreign body of scrotum and testes
- S31.34Puncture wound with foreign body of scrotum and testes
- S31.35Open bite of scrotum and testes
- S31.4Open wound of vagina and vulva
- S31.40Unspecified open wound of vagina and vulva
- S31.41Laceration without foreign body of vagina and vulva
- S31.42Laceration with foreign body of vagina and vulva
- S31.43Puncture wound without foreign body of vagina and vulva
- S31.44Puncture wound with foreign body of vagina and vulva
- S31.45Open bite of vagina and vulva
- S31.5Open wound of unspecified external genital organs
- S31.50Unspecified open wound of unspecified external genital organs
- S31.51Laceration without foreign body of unspecified external genital organs
- S31.52Laceration with foreign body of unspecified external genital organs
- S31.53Puncture wound without foreign body of unspecified external genital organs
- S31.54Puncture wound with foreign body of unspecified external genital organs
- S31.55Open bite of unspecified external genital organs
- S31.6Open wound of abdominal wall with penetration into peritoneal cavity
- S31.60Unspecified open wound of abdominal wall with penetration into peritoneal cavity
- S31.600Unspecified open wound of abdominal wall, right upper quadrant with penetration into peritoneal cavity
- S31.601Unspecified open wound of abdominal wall, left upper quadrant with penetration into peritoneal cavity
- S31.602Unspecified open wound of abdominal wall, epigastric region with penetration into peritoneal cavity
- S31.603Unspecified open wound of abdominal wall, right lower quadrant with penetration into peritoneal cavity
- S31.604Unspecified open wound of abdominal wall, left lower quadrant with penetration into peritoneal cavity
- S31.605Unspecified open wound of abdominal wall, periumbilic region with penetration into peritoneal cavity
- S31.606Unspecified open wound of abdominal wall, right flank with penetration into peritoneal cavity
- S31.607Unspecified open wound of abdominal wall, left flank with penetration into peritoneal cavity
- S31.609Unspecified open wound of abdominal wall, unspecified quadrant with penetration into peritoneal cavity
- S31.60AUnspecified open wound of abdominal wall, unspecified flank with penetration into peritoneal cavity
- S31.61Laceration without foreign body of abdominal wall with penetration into peritoneal cavity
- S31.610Laceration without foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity
- S31.611Laceration without foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity
- S31.612Laceration without foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity
- S31.613Laceration without foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity
- S31.614Laceration without foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity
- S31.615Laceration without foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity
- S31.616Laceration without foreign body of abdominal wall, right flank with penetration into peritoneal cavity
- S31.617Laceration without foreign body of abdominal wall, left flank with penetration into peritoneal cavity
- S31.619Laceration without foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity
- S31.61ALaceration without foreign body of abdominal wall, unspecified flank with penetration into peritoneal cavity
- S31.62Laceration with foreign body of abdominal wall with penetration into peritoneal cavity
- S31.620Laceration with foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity
- S31.621Laceration with foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity
- S31.622Laceration with foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity
- S31.623Laceration with foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity
- S31.624Laceration with foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity
- S31.625Laceration with foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity
- S31.626Laceration with foreign body of abdominal wall, right flank with penetration into peritoneal cavity
- S31.627Laceration with foreign body of abdominal wall, left flank with penetration into peritoneal cavity
- S31.629Laceration with foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity
- S31.62ALaceration with foreign body of abdominal wall, unspecified flank with penetration into peritoneal cavity
- S31.63Puncture wound without foreign body of abdominal wall with penetration into peritoneal cavity
- S31.630Puncture wound without foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity
- S31.631Puncture wound without foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity
- S31.632Puncture wound without foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity
- S31.633Puncture wound without foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity
- S31.634Puncture wound without foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity
- S31.635Puncture wound without foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity
- S31.636Puncture wound of abdominal wall without foreign body, right flank with penetration into peritoneal cavity
- S31.637Puncture wound of abdominal wall without foreign body, left flank with penetration into peritoneal cavity
- S31.639Puncture wound without foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity
- S31.63APuncture wound of abdominal wall without foreign body, unspecified flank with penetration into peritoneal cavity
- S31.64Puncture wound with foreign body of abdominal wall with penetration into peritoneal cavity
- S31.640Puncture wound with foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity
- S31.641Puncture wound with foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity
- S31.642Puncture wound with foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity
- S31.643Puncture wound with foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity
- S31.644Puncture wound with foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity
- S31.645Puncture wound with foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity
- S31.646Puncture wound of abdominal wall with foreign body, right flank with penetration into peritoneal cavity
- S31.647Puncture wound of abdominal wall with foreign body, left flank with penetration into peritoneal cavity
- S31.649Puncture wound with foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity
- S31.64APuncture wound of abdominal wall with foreign body, unspecified flank with penetration into peritoneal cavity
- S31.65Open bite of abdominal wall with penetration into peritoneal cavity
- S31.650Open bite of abdominal wall, right upper quadrant with penetration into peritoneal cavity
- S31.651Open bite of abdominal wall, left upper quadrant with penetration into peritoneal cavity
- S31.652Open bite of abdominal wall, epigastric region with penetration into peritoneal cavity
- S31.653Open bite of abdominal wall, right lower quadrant with penetration into peritoneal cavity
- S31.654Open bite of abdominal wall, left lower quadrant with penetration into peritoneal cavity
- S31.655Open bite of abdominal wall, periumbilic region with penetration into peritoneal cavity
- S31.656Open bite of abdominal wall, right flank with penetration into peritoneal cavity
- S31.657Open bite of abdominal wall, left flank with penetration into peritoneal cavity
- S31.659Open bite of abdominal wall, unspecified quadrant with penetration into peritoneal cavity
- S31.65AOpen bite of abdominal wall, unspecified flank with penetration into peritoneal cavity
- S31.60Unspecified open wound of abdominal wall with penetration into peritoneal cavity
- S31.8Open wound of other parts of abdomen, lower back and pelvis
- S31.80Open wound of unspecified buttock
- S31.801Laceration without foreign body of unspecified buttock
- S31.802Laceration with foreign body of unspecified buttock
- S31.803Puncture wound without foreign body of unspecified buttock
- S31.804Puncture wound with foreign body of unspecified buttock
- S31.805Open bite of unspecified buttock
- S31.809Unspecified open wound of unspecified buttock
- S31.81Open wound of right buttock
- S31.811Laceration without foreign body of right buttock
- S31.812Laceration with foreign body of right buttock
- S31.813Puncture wound without foreign body of right buttock
- S31.814Puncture wound with foreign body of right buttock
- S31.815Open bite of right buttock
- S31.819Unspecified open wound of right buttock
- S31.82Open wound of left buttock
- S31.83Open wound of anus
- S31.80Open wound of unspecified buttock
Coding notes
Excludes1Not coded here — never report together with this code
Excludes2Not included here — may be reported together if both conditions exist
Notes that apply from higher levels
Instructions written at a parent level also apply to S31.
Broader instructions also apply from S30-S39 Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals and Chapter 19: Injury, poisoning and certain other consequences of external causes.
Codes whose notes reference S31
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about S31
Is S31 billable?
- No. S31 is a header code. Report one of its more specific subcodes instead.