| Full description | Delayed hemolytic transfusion reaction, unspecified incompatibility |
| Billable | No — use a more specific child code |
| Chapter | Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88) |
| Section | Complications of surgical and medical care, not elsewhere classified (T80-T88) |
| Parent code | T80.91 — Hemolytic transfusion reaction, unspecified incompatibility |
| Requires 7th character | Yes |