All ICD10 Codes

O33

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Maternal care for disproportion

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

CH15 Parent Instructions

Excludes1(Not coded here)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here)
  • 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)
  • disproportion with obstructed labor (O65-O66)

Clinical Hierarchy

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 disproportion
O33.0Maternal care for disproportion due to deformity of maternal pelvic bones
O33.1Maternal care for disproportion due to generally contracted pelvis
O33.2Maternal care for disproportion due to inlet contraction of pelvis
O33.3Maternal care for disproportion due to outlet contraction of pelvis
O33.4Maternal care for disproportion of mixed maternal and fetal origin
O33.5Maternal care for disproportion due to unusually large fetus
O33.6Maternal care for disproportion due to hydrocephalic fetus
O33.7Maternal care for disproportion due to other fetal deformities
O33.8Maternal care for disproportion of other origin
O33.9Maternal care for disproportion, unspecified

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

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O33. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Android pelvis1 unique routes
with disproportion (fetopelvic)→O33
Anthropoid pelvis1 unique routes
with disproportion (fetopelvic)→O33
Contraction (s), contracture, contracted4 unique routes
pelvis (acquired) (general)(4 variants)
with disproportion (fetopelvic)→O33(4 variants)
inlet→O33
mid-cavity→O33
outlet→O33
Cretin, cretinism (congenital) (endemic) (nongoitrous) (sporadic)1 unique routes
pelvis
with disproportion (fetopelvic)→O33
Deformity2 unique routes
fetal
with fetopelvic disproportion→O33
pelvis, pelvic (acquired) (bony)
with disproportion (fetopelvic)→O33
Delivery (childbirth) (labor)9 unique routes
cesarean (for)(9 variants)
abnormal
pelvis (bony) (deformity) (major) NEC with disproportion (fetopelvic)→O33
cephalopelvic disproportion→O33
contracted pelvis (general)(2 variants)
inlet→O33
outlet→O33
deformity (acquired) (congenital)
pelvis (bony) NEC→O33
disproportion NOS→O33
hydrocephalic fetus→O33
increased size, fetus→O33
oversize fetus→O33
Distortion (s) (congenital)1 unique routes
lumbar spine
with disproportion→O33
Flat1 unique routes
pelvis
with disproportion (fetopelvic)→O33
Funnel1 unique routes
pelvis (acquired)
with disproportion (fetopelvic)→O33
Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent)1 unique routes
causing disproportion→O33
Infancy, infantile, infantilism1 unique routes
pelvis
with disproportion (fetopelvic)→O33
Male type pelvis1 unique routes
with disproportion (fetopelvic)→O33
Nägele's pelvis1 unique routes
with disproportion (fetopelvic)→O33

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Maternal care for disproportion.

Search PCS Codes