| Full description | Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, initial encounter |
| Billable | Yes |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39) |
| Parent code | S31.001 — Unsp opn wnd lower back and pelvis w penet retroperiton |