ICDwise
S31 ⚠ Non-billable

Open wound of abdomen, lower back, pelvis and external genitals

ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes

Code
S31
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Excludes1 — never code together
  • traumatic amputation of part of abdomen, lower back and pelvis (S38.2-, S38.3)
Excludes2 — not included here, but may code together
  • open wound of hip (S71.00-S71.02)
  • open fracture of pelvis (S32.1--S32.9 with 7th character B)
Code also
  • any associated:
  • spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)
  • wound infection
7th character
  • The appropriate 7th character is to be added to each code from category S31

Frequently asked questions

What is ICD-10 code S31?
ICD-10-CM code S31 represents Open wound of abdomen, lower back, pelvis and external genitals. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is S31 billable?
No. S31 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is S31 in?
S31 belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.

Related codes in the S31 category

S31.0 Open wound of lower back and pelvis Non-billable S31.00 Unspecified open wound of lower back and pelvis Non-billable S31.01 Laceration without foreign body of lower back and pelvis Non-billable S31.02 Laceration with foreign body of lower back and pelvis Non-billable S31.03 Puncture wound without foreign body of lower back and pelvis Non-billable S31.04 Puncture wound with foreign body of lower back and pelvis Non-billable S31.05 Open bite of lower back and pelvis Non-billable S31.000 Unspecified open wound of lower back and pelvis without penetration into retroperitoneum Non-billable

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