S31.1 — Open wound of abdominal wall without penetration into peritoneal cavity
S31.1 is a non-billable header ICD-10-CM code for open wound of abdominal wall without penetration into peritoneal cavity. 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
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.
- open wound of abdominal wall with penetration into peritoneal cavity (S31.6-)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Open wound of abdominal wall NOS
Other codes that can never be billed with S31.1
These codes carry an Excludes1 note pointing at S31.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S31.1 alone.
- S30.87Other superficial bite of abdomen, lower back, pelvis and external genitals
Risk adjustment
S31.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead S31.1
6 child codes. Green means billable.
- S31.10Unspecified open wound of abdominal wall without penetration into peritoneal cavity
- S31.11Laceration without foreign body of abdominal wall without penetration into peritoneal cavity
- S31.12Laceration with foreign body of abdominal wall without penetration into peritoneal cavity
- S31.13Puncture wound of abdominal wall without foreign body without penetration into peritoneal cavity
- S31.14Puncture wound of abdominal wall with foreign body without penetration into peritoneal cavity
- S31.15Open bite of abdominal wall without penetration into peritoneal cavity
Related codes at this level
Codes that share S31. If S31.1 is not quite right, the correct code is usually one of these.
- S31.0Open wound of lower back and pelvis
- 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
Questions about S31.1
- Is S31.1 a billable ICD-10-CM code?
- No. S31.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S31.1 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39).