| Full description | Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, first trimester |
| Billable | Yes |
| Chapter | Chapter 15: Pregnancy, childbirth and the puerperium (O00-O9A) |
| Section | Other obstetric conditions, not elsewhere classified (O94-O9A) |
| Parent code | O99.11 — Oth diseases of the bld/bld-form org/immun mechnsm comp preg |