O33Header code — not billable
Maternal care for disproportion
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O33
- Effective date
- October 1, 2026
Related codes in category O33
O33.0Matern care for disproprtn d/t deformity of matern pelv boneYesO33.1Matern care for disproprtn d/t generally contracted pelvisYesO33.2Maternal care for disproprtn due to inlet contrctn of pelvisYesO33.3Matern care for disproprtn due to outlet contrctn of pelvisO33.3XX0Matern care for disproprtn d/t outlet contrctn of pelv, unspYesO33.3XX1Matern care for disproprtn d/t outlet contrctn of pelv, fts1YesO33.3XX2Matern care for disproprtn d/t outlet contrctn of pelv, fts2YesO33.3XX3Matern care for disproprtn d/t outlet contrctn of pelv, fts3YesO33.3XX4Matern care for disproprtn d/t outlet contrctn of pelv, fts4YesO33.3XX5Matern care for disproprtn d/t outlet contrctn of pelv, fts5YesO33.3XX9Matern care for disproprtn d/t outlet contrctn of pelv, othYesO33.4Matern care for disproprtn of mixed matern and fetal origin
Frequently asked questions
What is ICD-10 code O33?
O33 is an ICD-10-CM diagnosis code for Maternal care for disproportion.
Is O33 a billable code?
No. O33 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 O33 in?
O33 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O33 become effective?
O33 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O33?
O33 belongs to category O33, 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.