S31.11AA — Laceration without foreign body of abdominal wall, unspecified flank without penetration into peritoneal cavity, initial encounter
S31.11AA is a billable, specific ICD-10-CM code for laceration without foreign body of abdominal wall, unspecified flank without penetration into peritoneal cavity, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category S31
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Laceration without foreign body of flank NOS without penetration into peritoneal cavity
Risk adjustment
S31.11AA 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.
Medicare coverage
S31.11AA is named in 11 Medicare coverage policies — 11 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
- A53064Billing and Coding: Outpatient Occupational Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
Code history
What changed, and when. Derived by diffing consecutive CMS release files — which matters when you are defending a code assigned under an earlier edition.
- addedFY2024-FY2026
Laceration without foreign body of abdominal wall, unspecified flank without penetration into peritoneal cavity, initial encounter
Related codes at this level
Codes that share S31.11A. If S31.11AA is not quite right, the correct code is usually one of these.
Questions about S31.11AA
- Is S31.11AA a billable ICD-10-CM code?
- Yes. S31.11AA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S31.11AA 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).