| Full description | Other specified disorders involving the immune mechanism, not elsewhere classified |
| Billable | No — use a more specific child code |
| Chapter | Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) |
| Section | Certain disorders involving the immune mechanism (D80-D89) |
| Parent code | D89 — Oth disorders involving the immune mechanism, NEC |