All ICD10 Codes

O33

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Maternal care for disproportion

Use a more specific code (10 billable)
O33.0Maternal care for disproportion due to deformity of maternal pelvic bonesO33.1Maternal care for disproportion due to generally contracted pelvisO33.2Maternal care for disproportion due to inlet contraction of pelvisO33.3Maternal care for disproportion due to outlet contraction of pelvisO33.4Maternal care for disproportion of mixed maternal and fetal originO33.5Maternal care for disproportion due to unusually large fetusO33.6Maternal care for disproportion due to hydrocephalic fetusO33.7Maternal care for disproportion due to other fetal deformitiesO33.8Maternal care for disproportion of other originO33.9Maternal care for disproportion, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

CH15 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here. Code separately if applicable.)
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
Use Additional Code
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Instructional Notes

Includes
  • the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor
Excludes1(Not coded here. Use a different code.)
  • disproportion with obstructed labor (O65-O66)

Clinical Hierarchy

BillableHas subcodes
CH15Pregnancy, childbirth and the puerperium (O00-O9A)
O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
O33Maternal care for disproportionNot billable
O33.0Maternal care for disproportion due to deformity of maternal pelvic bonesBillable
O33.1Maternal care for disproportion due to generally contracted pelvisBillable
O33.2Maternal care for disproportion due to inlet contraction of pelvisBillable
O33.3Maternal care for disproportion due to outlet contraction of pelvisBillable
O33.4Maternal care for disproportion of mixed maternal and fetal originBillable
O33.5Maternal care for disproportion due to unusually large fetusBillable
O33.6Maternal care for disproportion due to hydrocephalic fetusBillable
O33.7Maternal care for disproportion due to other fetal deformitiesBillable
O33.8Maternal care for disproportion of other originBillable
O33.9Maternal care for disproportion, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O33:

chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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