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ICD-10-CM · FY 2026 APRIL UPDATE

O33

Maternal care for disproportion

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
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 pelvisCategory
O33.3XX0Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecifiedBillable
O33.3XX1Maternal care for disproportion due to outlet contraction of pelvis, fetus 1Billable
O33.3XX2Maternal care for disproportion due to outlet contraction of pelvis, fetus 2Billable
O33.3XX3Maternal care for disproportion due to outlet contraction of pelvis, fetus 3Billable
O33.3XX4Maternal care for disproportion due to outlet contraction of pelvis, fetus 4Billable
O33.3XX5Maternal care for disproportion due to outlet contraction of pelvis, fetus 5Billable
O33.3XX9Maternal care for disproportion due to outlet contraction of pelvis, other fetusBillable
O33.4Maternal care for disproportion of mixed maternal and fetal originCategory
O33.4XX0Maternal care for disproportion of mixed maternal and fetal origin, not applicable or unspecifiedBillable
O33.4XX1Maternal care for disproportion of mixed maternal and fetal origin, fetus 1Billable
O33.4XX2Maternal care for disproportion of mixed maternal and fetal origin, fetus 2Billable
O33.4XX3Maternal care for disproportion of mixed maternal and fetal origin, fetus 3Billable
O33.4XX4Maternal care for disproportion of mixed maternal and fetal origin, fetus 4Billable
O33.4XX5Maternal care for disproportion of mixed maternal and fetal origin, fetus 5Billable
O33.4XX9Maternal care for disproportion of mixed maternal and fetal origin, other fetusBillable
O33.5Maternal care for disproportion due to unusually large fetusCategory
O33.5XX0Maternal care for disproportion due to unusually large fetus, not applicable or unspecifiedBillable
O33.5XX1Maternal care for disproportion due to unusually large fetus, fetus 1Billable
O33.5XX2Maternal care for disproportion due to unusually large fetus, fetus 2Billable
O33.5XX3Maternal care for disproportion due to unusually large fetus, fetus 3Billable
O33.5XX4Maternal care for disproportion due to unusually large fetus, fetus 4Billable
O33.5XX5Maternal care for disproportion due to unusually large fetus, fetus 5Billable
O33.5XX9Maternal care for disproportion due to unusually large fetus, other fetusBillable
O33.6Maternal care for disproportion due to hydrocephalic fetusCategory
O33.6XX0Maternal care for disproportion due to hydrocephalic fetus, not applicable or unspecifiedBillable
O33.6XX1Maternal care for disproportion due to hydrocephalic fetus, fetus 1Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.