ICD-10 · PDGM grouping
O34 Maternal care for abnormality of pelvic organs
All 54 codes in the O34 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
54
Can lead a claim
0
Cannot lead a claim
54
What CMS assigns to O34
None of the 54 codes is assigned a clinical group. None of the 54 is assigned a comorbidity subgroup. None can lead a claim. CMS attaches a code-first note to all 54.
Code first
CMS grouper convention 145, on all 54 codes. Code first:
- any associated obstructed labor (O65.5)
Every code in O34
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 |
|---|---|---|---|---|
| O34.0 Maternal care for congenital malformation of uterus | ||||
| O34.00 | Maternal care for unspecified congenital malformation of uterus, unspecified trimesterCMS: Maternal care for unsp congen malform of uterus, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.01 | Maternal care for unspecified congenital malformation of uterus, first trimesterCMS: Maternal care for unsp congen malform of uterus, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.02 | Maternal care for unspecified congenital malformation of uterus, second trimesterCMS: Maternal care for unsp congen malform of uterus, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.03 | Maternal care for unspecified congenital malformation of uterus, third trimesterCMS: Maternal care for unsp congen malform of uterus, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.1 Maternal care for benign tumor of corpus uteri | ||||
| O34.10 | Maternal care for benign tumor of corpus uteri, unspecified trimesterCMS: Maternal care for benign tumor of corpus uteri, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.11 | Maternal care for benign tumor of corpus uteri, first trimesterCMS: Maternal care for benign tumor of corpus uteri, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.12 | Maternal care for benign tumor of corpus uteri, second trimesterCMS: Maternal care for benign tumor of corpus uteri, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.13 | Maternal care for benign tumor of corpus uteri, third trimesterCMS: Maternal care for benign tumor of corpus uteri, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.2 Maternal care due to uterine scar from previous surgery | ||||
| O34.21 Maternal care for scar from previous cesarean delivery | ||||
| O34.211 | Maternal care for low transverse scar from previous cesarean deliveryCMS: Matern care for low transverse scar from prev cesarean del | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.212 | Maternal care for vertical scar from previous cesarean deliveryCMS: Maternal care for vertical scar from previous cesarean del | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.218 | Maternal care for other type scar from previous cesarean deliveryCMS: Maternal care for other type scar from previous cesarean del | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.219 | Maternal care for unspecified type scar from previous cesarean deliveryCMS: Maternal care for unsp type scar from previous cesarean del | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.22 | Maternal care for cesarean scar defect (isthmocele) | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.29 | Maternal care due to uterine scar from other previous surgeryCMS: Maternal care due to uterine scar from oth previous surgery | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.3 Maternal care for cervical incompetence | ||||
| O34.30 | Maternal care for cervical incompetence, unspecified trimesterCMS: Maternal care for cervical incompetence, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.31 | Maternal care for cervical incompetence, first trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.32 | Maternal care for cervical incompetence, second trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.33 | Maternal care for cervical incompetence, third trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.4 Maternal care for other abnormalities of cervix | ||||
| O34.40 | Maternal care for other abnormalities of cervix, unspecified trimesterCMS: Maternal care for oth abnlt of cervix, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.41 | Maternal care for other abnormalities of cervix, first trimesterCMS: Maternal care for oth abnlt of cervix, first trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.42 | Maternal care for other abnormalities of cervix, second trimesterCMS: Maternal care for oth abnlt of cervix, second trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.43 | Maternal care for other abnormalities of cervix, third trimesterCMS: Maternal care for oth abnlt of cervix, third trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.5 Maternal care for other abnormalities of gravid uterus | ||||
| O34.51 Maternal care for incarceration of gravid uterus | ||||
| O34.511 | Maternal care for incarceration of gravid uterus, first trimesterCMS: Maternal care for incarceration of gravid uterus, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.512 | Maternal care for incarceration of gravid uterus, second trimesterCMS: Maternal care for incarceration of gravid uterus, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.513 | Maternal care for incarceration of gravid uterus, third trimesterCMS: Maternal care for incarceration of gravid uterus, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.519 | Maternal care for incarceration of gravid uterus, unspecified trimesterCMS: Maternal care for incarceration of gravid uterus, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.52 Maternal care for prolapse of gravid uterus | ||||
| O34.521 | Maternal care for prolapse of gravid uterus, first trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.522 | Maternal care for prolapse of gravid uterus, second trimesterCMS: Maternal care for prolapse of gravid uterus, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.523 | Maternal care for prolapse of gravid uterus, third trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.529 | Maternal care for prolapse of gravid uterus, unspecified trimesterCMS: Maternal care for prolapse of gravid uterus, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.53 Maternal care for retroversion of gravid uterus | ||||
| O34.531 | Maternal care for retroversion of gravid uterus, first trimesterCMS: Maternal care for retroversion of gravid uterus, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.532 | Maternal care for retroversion of gravid uterus, second trimesterCMS: Maternal care for retroversion of gravid uterus, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.533 | Maternal care for retroversion of gravid uterus, third trimesterCMS: Maternal care for retroversion of gravid uterus, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.539 | Maternal care for retroversion of gravid uterus, unspecified trimesterCMS: Maternal care for retroversion of gravid uterus, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.59 Maternal care for other abnormalities of gravid uterus | ||||
| O34.591 | Maternal care for other abnormalities of gravid uterus, first trimesterCMS: Maternal care for oth abnlt of gravid uterus, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.592 | Maternal care for other abnormalities of gravid uterus, second trimesterCMS: Maternal care for oth abnlt of gravid uterus, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.593 | Maternal care for other abnormalities of gravid uterus, third trimesterCMS: Maternal care for oth abnlt of gravid uterus, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.599 | Maternal care for other abnormalities of gravid uterus, unspecified trimesterCMS: Maternal care for oth abnlt of gravid uterus, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.6 Maternal care for abnormality of vagina | ||||
| O34.60 | Maternal care for abnormality of vagina, unspecified trimesterCMS: Maternal care for abnormality of vagina, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.61 | Maternal care for abnormality of vagina, first trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.62 | Maternal care for abnormality of vagina, second trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.63 | Maternal care for abnormality of vagina, third trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.7 Maternal care for abnormality of vulva and perineum | ||||
| O34.70 | Maternal care for abnormality of vulva and perineum, unspecified trimesterCMS: Maternal care for abnlt of vulva and perineum, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.71 | Maternal care for abnormality of vulva and perineum, first trimesterCMS: Maternal care for abnlt of vulva and perineum, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.72 | Maternal care for abnormality of vulva and perineum, second trimesterCMS: Maternal care for abnlt of vulva and perineum, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.73 | Maternal care for abnormality of vulva and perineum, third trimesterCMS: Maternal care for abnlt of vulva and perineum, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.8 Maternal care for other abnormalities of pelvic organs | ||||
| O34.80 | Maternal care for other abnormalities of pelvic organs, unspecified trimesterCMS: Maternal care for oth abnlt of pelvic organs, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.81 | Maternal care for other abnormalities of pelvic organs, first trimesterCMS: Maternal care for oth abnlt of pelvic organs, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.82 | Maternal care for other abnormalities of pelvic organs, second trimesterCMS: Maternal care for oth abnlt of pelvic organs, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.83 | Maternal care for other abnormalities of pelvic organs, third trimesterCMS: Maternal care for oth abnlt of pelvic organs, third tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.9 Maternal care for abnormality of pelvic organ, unspecified | ||||
| O34.90 | Maternal care for abnormality of pelvic organ, unspecified, unspecified trimesterCMS: Maternal care for abnlt of pelvic organ, unsp, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.91 | Maternal care for abnormality of pelvic organ, unspecified, first trimesterCMS: Maternal care for abnlt of pelvic organ, unsp, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.92 | Maternal care for abnormality of pelvic organ, unspecified, second trimesterCMS: Maternal care for abnlt of pelvic organ, unsp, second tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O34.93 | Maternal care for abnormality of pelvic organ, unspecified, third trimesterCMS: Maternal care for abnlt of pelvic organ, unsp, third tri | 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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