MCMedicalCodingSoftware
O33.1

O33.1: Maternal care for disproportion due to generally contracted pelvis

Billable / specific codeICD-10-CM

O33.1 is a billable, specific ICD-10-CM code for maternal care for disproportion due to generally contracted pelvis. It is valid for submission on a claim.

Check O33.1 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Maternal care for disproportion due to contracted pelvis NOS causing disproportion

Excludes1 inherited from the categories above O33.1

A category’s note binds every code beneath it.

Written on O33: Maternal care for disproportion

  • disproportion with obstructed labor (O65-O66)

Other codes that can never be billed with O33.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • M95.5Acquired deformity of pelvis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Contraction, contracture, contracted›pelvis›with disproportion(fetopelvic)
  • Infancy, infantile, infantilism›pelvis›with disproportion(fetopelvic)
  • Pregnancy›complicated by›contracted pelvis(general)
  • Small›pelvis›with disproportion(fetopelvic)
  • Pregnancy›complicated by›disproportion›generally contracted pelvis

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under O33

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.