ICD-10 · PDGM grouping
O33 Maternal care for disproportion
All 40 codes in the O33 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
40
Can lead a claim
0
Cannot lead a claim
40
What CMS assigns to O33
None of the 40 codes is assigned a clinical group. None of the 40 is assigned a comorbidity subgroup. None can lead a claim.
Every code in O33
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| O33.0 | Maternal care for disproportion due to deformity of maternal pelvic bonesCMS: Matern care for disproprtn d/t deformity of matern pelv bone | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.1 | Maternal care for disproportion due to generally contracted pelvisCMS: Matern care for disproprtn d/t generally contracted pelvis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.2 | Maternal care for disproportion due to inlet contraction of pelvisCMS: Maternal care for disproprtn due to inlet contrctn of pelvis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3 Maternal care for disproportion due to outlet contraction of pelvis | ||||
| O33.3XX0 | Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecifiedCMS: Matern care for disproprtn d/t outlet contrctn of pelv, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3XX1 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 1CMS: Matern care for disproprtn d/t outlet contrctn of pelv, fts1 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3XX2 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 2CMS: Matern care for disproprtn d/t outlet contrctn of pelv, fts2 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3XX3 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 3CMS: Matern care for disproprtn d/t outlet contrctn of pelv, fts3 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3XX4 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 4CMS: Matern care for disproprtn d/t outlet contrctn of pelv, fts4 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3XX5 | Maternal care for disproportion due to outlet contraction of pelvis, fetus 5CMS: Matern care for disproprtn d/t outlet contrctn of pelv, fts5 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.3XX9 | Maternal care for disproportion due to outlet contraction of pelvis, other fetusCMS: Matern care for disproprtn d/t outlet contrctn of pelv, oth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4 Maternal care for disproportion of mixed maternal and fetal origin | ||||
| O33.4XX0 | Maternal care for disproportion of mixed maternal and fetal origin, not applicable or unspecifiedCMS: Matern care for disproprtn of mix matern & fetl origin, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4XX1 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 1CMS: Matern care for disproprtn of mix matern & fetl origin, fts1 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4XX2 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 2CMS: Matern care for disproprtn of mix matern & fetl origin, fts2 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4XX3 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 3CMS: Matern care for disproprtn of mix matern & fetl origin, fts3 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4XX4 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 4CMS: Matern care for disproprtn of mix matern & fetl origin, fts4 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4XX5 | Maternal care for disproportion of mixed maternal and fetal origin, fetus 5CMS: Matern care for disproprtn of mix matern & fetl origin, fts5 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.4XX9 | Maternal care for disproportion of mixed maternal and fetal origin, other fetusCMS: Matern care for disproprtn of mix matern & fetl origin, oth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5 Maternal care for disproportion due to unusually large fetus | ||||
| O33.5XX0 | Maternal care for disproportion due to unusually large fetus, not applicable or unspecifiedCMS: Matern care for disproprtn d/t unusually large fetus, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5XX1 | Maternal care for disproportion due to unusually large fetus, fetus 1CMS: Matern care for disproprtn d/t unusually large fetus, fts1 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5XX2 | Maternal care for disproportion due to unusually large fetus, fetus 2CMS: Matern care for disproprtn d/t unusually large fetus, fts2 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5XX3 | Maternal care for disproportion due to unusually large fetus, fetus 3CMS: Matern care for disproprtn d/t unusually large fetus, fts3 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5XX4 | Maternal care for disproportion due to unusually large fetus, fetus 4CMS: Matern care for disproprtn d/t unusually large fetus, fts4 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5XX5 | Maternal care for disproportion due to unusually large fetus, fetus 5CMS: Matern care for disproprtn d/t unusually large fetus, fts5 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.5XX9 | Maternal care for disproportion due to unusually large fetus, other fetusCMS: Matern care for disproprtn due to unusually large fetus, oth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6 Maternal care for disproportion due to hydrocephalic fetus | ||||
| O33.6XX0 | Maternal care for disproportion due to hydrocephalic fetus, not applicable or unspecifiedCMS: Matern care for disproprtn due to hydrocephalic fetus, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6XX1 | Maternal care for disproportion due to hydrocephalic fetus, fetus 1CMS: Matern care for disproprtn due to hydrocephalic fetus, fts1 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6XX2 | Maternal care for disproportion due to hydrocephalic fetus, fetus 2CMS: Matern care for disproprtn due to hydrocephalic fetus, fts2 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6XX3 | Maternal care for disproportion due to hydrocephalic fetus, fetus 3CMS: Matern care for disproprtn due to hydrocephalic fetus, fts3 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6XX4 | Maternal care for disproportion due to hydrocephalic fetus, fetus 4CMS: Matern care for disproprtn due to hydrocephalic fetus, fts4 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6XX5 | Maternal care for disproportion due to hydrocephalic fetus, fetus 5CMS: Matern care for disproprtn due to hydrocephalic fetus, fts5 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.6XX9 | Maternal care for disproportion due to hydrocephalic fetus, other fetusCMS: Maternal care for disproprtn due to hydrocephalic fetus, oth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7 Maternal care for disproportion due to other fetal deformities | ||||
| O33.7XX0 | Maternal care for disproportion due to other fetal deformities, not applicable or unspecifiedCMS: Maternal care for disproprtn due to other fetal deform, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7XX1 | Maternal care for disproportion due to other fetal deformities, fetus 1CMS: Matern care for disproprtn due to other fetal deform, fts1 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7XX2 | Maternal care for disproportion due to other fetal deformities, fetus 2CMS: Matern care for disproprtn due to other fetal deform, fts2 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7XX3 | Maternal care for disproportion due to other fetal deformities, fetus 3CMS: Matern care for disproprtn due to other fetal deform, fts3 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7XX4 | Maternal care for disproportion due to other fetal deformities, fetus 4CMS: Matern care for disproprtn due to other fetal deform, fts4 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7XX5 | Maternal care for disproportion due to other fetal deformities, fetus 5CMS: Matern care for disproprtn due to other fetal deform, fts5 | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.7XX9 | Maternal care for disproportion due to other fetal deformities, other fetusCMS: Maternal care for disproprtn due to other fetal deform, oth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.8 | Maternal care for disproportion of other origin | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O33.9 | Maternal care for disproportion, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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