O33.0 Maternal care for disproportion due to deformity of maternal pelvic bones

The ICD-10-CM code for Maternal care for disproportion due to deformity of maternal pelvic bones is O33.0 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

15: Pregnancy, childbirth and the puerperium (O00-O9A)

Section

O30-O48: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

Category O33

11 codes (10 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to O33.0:

• Anthropoid pelvis › with disproportion (fetopelvic)
• Robert's pelvis › with disproportion (fetopelvic)
• Spondylolisthesis (acquired) (degenerative) › with disproportion (fetopelvic)
• Nägele's pelvis › with disproportion (fetopelvic)
• Platypelloid pelvis › with disproportion (fetopelvic)
• Prominence, prominent › ischial spine or sacral promontory with disproportion (fetopelvic)
• Scoliotic pelvis › with disproportion (fetopelvic)
• Pithecoid pelvis › with disproportion (fetopelvic)

Inclusion Terms

• Maternal care for disproportion due to pelvic deformity causing disproportion NOS

U.S. Hospital Utilization

• An estimated 815 U.S. inpatient stays in 2023 included O33.0 among the documented diagnoses.
• 205 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)