| Full description | Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity |
| Billable | No — use a more specific child code |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Injuries to the thorax (S20-S29) |
| Parent code | S21.43 — Pnctr w/o fb of back wall of thorax w penet thoracic cavity |
| Requires 7th character | Yes |