O33 Maternal care for disproportion
ICD-10-CM category O33 sits in Chapter 15 (Pregnancy, childbirth and the puerperium, O00-O9A). It contains 40 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
O33.3 Matern care for disproprtn due to outlet contrctn of pelvisO33.4 Matern care for disproprtn of mixed matern and fetal originO33.5 Maternal care for disproportion due to unusually large fetusO33.6 Maternal care for disproportion due to hydrocephalic fetusO33.7 Maternal care for disproportion due to oth fetal deformities
Billable codes in O33
| Code | Description |
|---|---|
O33.0 | Maternal care for disproportion due to deformity of maternal pelvic bones |
O33.1 | Maternal care for disproportion due to generally contracted pelvis |
O33.2 | Maternal care for disproportion due to inlet contraction of pelvis |
O33.3XX0 | Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified |
O33.3XX1 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 1 |
O33.3XX2 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 2 |
O33.3XX3 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 3 |
O33.3XX4 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 4 |
O33.3XX5 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 5 |
O33.3XX9 | Maternal care for disproportion due to outlet contraction of pelvis, other fetus |
O33.4XX0 | Maternal care for disproportion of mixed maternal and fetal origin, not applicable or unspecified |
O33.4XX1 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 1 |
O33.4XX2 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 2 |
O33.4XX3 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 3 |
O33.4XX4 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 4 |
O33.4XX5 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 5 |
O33.4XX9 | Maternal care for disproportion of mixed maternal and fetal origin, other fetus |
O33.5XX0 | Maternal care for disproportion due to unusually large fetus, not applicable or unspecified |
O33.5XX1 | Maternal care for disproportion due to unusually large fetus, fetus 1 |
O33.5XX2 | Maternal care for disproportion due to unusually large fetus, fetus 2 |
O33.5XX3 | Maternal care for disproportion due to unusually large fetus, fetus 3 |
O33.5XX4 | Maternal care for disproportion due to unusually large fetus, fetus 4 |
O33.5XX5 | Maternal care for disproportion due to unusually large fetus, fetus 5 |
O33.5XX9 | Maternal care for disproportion due to unusually large fetus, other fetus |
O33.6XX0 | Maternal care for disproportion due to hydrocephalic fetus, not applicable or unspecified |
O33.6XX1 | Maternal care for disproportion due to hydrocephalic fetus, fetus 1 |
O33.6XX2 | Maternal care for disproportion due to hydrocephalic fetus, fetus 2 |
O33.6XX3 | Maternal care for disproportion due to hydrocephalic fetus, fetus 3 |
O33.6XX4 | Maternal care for disproportion due to hydrocephalic fetus, fetus 4 |
O33.6XX5 | Maternal care for disproportion due to hydrocephalic fetus, fetus 5 |
O33.6XX9 | Maternal care for disproportion due to hydrocephalic fetus, other fetus |
O33.7XX0 | Maternal care for disproportion due to other fetal deformities, not applicable or unspecified |
O33.7XX1 | Maternal care for disproportion due to other fetal deformities, fetus 1 |
O33.7XX2 | Maternal care for disproportion due to other fetal deformities, fetus 2 |
O33.7XX3 | Maternal care for disproportion due to other fetal deformities, fetus 3 |
O33.7XX4 | Maternal care for disproportion due to other fetal deformities, fetus 4 |
O33.7XX5 | Maternal care for disproportion due to other fetal deformities, fetus 5 |
O33.7XX9 | Maternal care for disproportion due to other fetal deformities, other fetus |
O33.8 | Maternal care for disproportion of other origin |
O33.9 | Maternal care for disproportion, unspecified |
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