| Full description | Unspecified foreign body in respiratory tract, part unspecified causing asphyxiation |
| Billable | No — use a more specific child code |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Effects of foreign body entering through natural orifice (T15-T19) |
| Parent code | T17.90 — Unsp foreign body in respiratory tract, part unspecified |
| Requires 7th character | Yes |