FY2026
Effective from
- Added
Unspecified open wound of abdominal wall, unspecified flank with penetration into peritoneal cavity
Category — select a more specific code
CDC/NCHS · FY2026code to identify any retained foreign body, if applicable (Z18.-)
A — initial encounter
D — subsequent encounter
S — sequela
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2025-10-01
Latest recorded change · FY2026
Effective from
Unspecified open wound of abdominal wall, unspecified flank with penetration into peritoneal cavity
Category — select a more specific code
CDC/NCHS · FY2026| All editions | Effective from | Code history |
|---|---|---|
| FY2026 | 2025-10-01 | Added |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Unspecified open wound of abdominal wall of flank NOS, with penetration into peritoneal cavity
code to identify any retained foreign body, if applicable (Z18.-)
The appropriate 7th character is to be added to each code from category S31
A — initial encounter
D — subsequent encounter
S — sequela
S31.60AAUnspecified open wound of abdominal wall, unspecified flank with penetration into peritoneal cavity, initial encounterBillable / specificS31.60ADUnspecified open wound of abdominal wall, unspecified flank with penetration into peritoneal cavity, subsequent encounterBillable / specificS31.60ASUnspecified open wound of abdominal wall, unspecified flank with penetration into peritoneal cavity, sequelaBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| S31.600 | Unspecified open wound of abdominal wall, right upper quadrant with penetration into peritoneal cavity | Category · further specificity required |
| S31.601 | Unspecified open wound of abdominal wall, left upper quadrant with penetration into peritoneal cavity | Category · further specificity required |
| S31.602 | Unspecified open wound of abdominal wall, epigastric region with penetration into peritoneal cavity | Category · further specificity required |
| S31.603 | Unspecified open wound of abdominal wall, right lower quadrant with penetration into peritoneal cavity | Category · further specificity required |
| S31.604 | Unspecified open wound of abdominal wall, left lower quadrant with penetration into peritoneal cavity | Category · further specificity required |
| S31.605 | Unspecified open wound of abdominal wall, periumbilic region with penetration into peritoneal cavity | Category · further specificity required |
| S31.606 | Unspecified open wound of abdominal wall, right flank with penetration into peritoneal cavity | Category · further specificity required |
| S31.607 | Unspecified open wound of abdominal wall, left flank with penetration into peritoneal cavity | Category · further specificity required |
| S31.609 | Unspecified open wound of abdominal wall, unspecified quadrant with penetration into peritoneal cavity | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗