All ICD10 Codes
O33Not billable, use a more specific code below

Maternal care for disproportion

In Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48), chapter 15: Pregnancy, Childbirth and the Puerperium

40 billable codes under O33: 1 is a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

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Instructional notes

Includes: conditions that are coded here

  • 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)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Coding of obstetric cases with O00-O9A codes: sequencing priority, trimester and fetus characters, principal diagnosis selection, delivery outcome, and pregnancy-related complications.

Read Section I.C.15 (page 63), 11 more topics

All codes under O33

O33 can't be used on a claim. Pick a billable code below; grey headings group them.

O33 MS-DRGs

As the principal diagnosis, all 40 billable codes under O33 group to MS-DRG 817, 818, 819, 831, 832, or 833 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to O33

Notes on these codes point to O33.

  • M95.5 Excludes1: maternal care for known or suspected disproportion (O33.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Childbirth Problems

Childbirth is the process of giving birth to a baby. It includes labor and delivery. Usually everything goes well, but problems can happen. They may cause a risk to the mother, baby, or both. Some of the more common childbirth problems include:

Read more about childbirth problems on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.