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S31.10A

S31.10A: Unspecified open wound of abdominal wall, unspecified flank without penetration into peritoneal cavity

Non-billable headerICD-10-CM

S31.10A is a non-billable header ICD-10-CM code for unspecified open wound of abdominal wall, unspecified flank 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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Open wound of abdominal wall of flank NOS without penetration into peritoneal cavity

Excludes1 inherited from the categories above S31.10A

A category’s note binds every code beneath it.

Written on S31: Open wound of abdomen, lower back, pelvis and external genitals

  • traumatic amputation of part of abdomen, lower back and pelvis (S38.2-, S38.3)

Excludes2 inherited from the categories above S31.10A

Not part of this code, but both may be coded when both are present.

Written on S31.1: Open wound of abdominal wall without penetration into peritoneal cavity

  • open wound of abdominal wall with penetration into peritoneal cavity (S31.6-)

Written on S31: Open wound of abdomen, lower back, pelvis and external genitals

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Wound, open›flank

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead S31.10A

3 child codes. Green means billable.

Other codes under S31.10

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.