O99.01Header code — not billable
Anemia complicating pregnancy
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O99
- Effective date
- October 1, 2026
Related codes in category O99
O99Oth maternal diseases classd elsw but compl preg/chldbrthO99.0Anemia complicating pregnancy, childbirth and the puerperiumO99.011Anemia complicating pregnancy, first trimesterYesO99.012Anemia complicating pregnancy, second trimesterYesO99.013Anemia complicating pregnancy, third trimesterYesO99.019Anemia complicating pregnancy, unspecified trimesterYesO99.02Anemia complicating childbirthYesO99.03Anemia complicating the puerperiumYesO99.1Other dis blood/immune compl preg/childbrthO99.11Oth diseases of the bld/bld-form org/immun mechnsm comp pregO99.111Oth dis of bld/bld-form org/immun mechnsm comp preg, 1st triYesO99.112Oth dis of bld/bld-form org/immun mechnsm comp preg, 2nd triYes
Frequently asked questions
What is ICD-10 code O99.01?
O99.01 is an ICD-10-CM diagnosis code for Anemia complicating pregnancy.
Is O99.01 a billable code?
No. O99.01 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is O99.01 in?
O99.01 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O99.01 become effective?
O99.01 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O99.01?
O99.01 belongs to category O99, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.