S31.021
⚠ Non-billable (Header)Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for S31.021
Child Codes (3)
S31.021ALaceration with foreign body of lower back and pelvis with penetration into retroperitoneum, initial encounterS31.021DLaceration with foreign body of lower back and pelvis with penetration into retroperitoneum, subsequent encounterS31.021SLaceration with foreign body of lower back and pelvis with penetration into retroperitoneum, sequela
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CodeS31.021
BillableNo — Header code
ParentS31.02
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)