ICD-10 · PDGM grouping
O9A Maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
All 30 codes in the O9A 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
30
Can lead a claim
25
Cannot lead a claim
5
What CMS assigns to O9A
25 of the 30 codes group to MMTA - Other; 5 are assigned no clinical group. None of the 30 is assigned a comorbidity subgroup. 25 of the 30 can lead a claim.
Every code in O9A
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 |
|---|---|---|---|---|
| O9A.1 Malignant neoplasm complicating pregnancy, childbirth and the puerperium | ||||
| O9A.11 Malignant neoplasm complicating pregnancy | ||||
| O9A.111 | Malignant neoplasm complicating pregnancy, first trimester | Can lead a claim | A | None |
| O9A.112 | Malignant neoplasm complicating pregnancy, second trimester | Can lead a claim | A | None |
| O9A.113 | Malignant neoplasm complicating pregnancy, third trimester | Can lead a claim | A | None |
| O9A.119 | Malignant neoplasm complicating pregnancy, unspecified trimesterCMS: Malignant neoplasm complicating pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O9A.12 | Malignant neoplasm complicating childbirth | Can lead a claim | A | None |
| O9A.13 | Malignant neoplasm complicating the puerperium | Can lead a claim | A | None |
| O9A.2 Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium | ||||
| O9A.21 Injury, poisoning and certain other consequences of external causes complicating pregnancy | ||||
| O9A.211 | Injury, poisoning and certain other consequences of external causes complicating pregnancy, first trimesterCMS: Inj/poisn/oth conseq of external causes comp preg, first tri | Can lead a claim | A | None |
| O9A.212 | Injury, poisoning and certain other consequences of external causes complicating pregnancy, second trimesterCMS: Inj/poisn/oth conseq of extrn causes comp preg, second tri | Can lead a claim | A | None |
| O9A.213 | Injury, poisoning and certain other consequences of external causes complicating pregnancy, third trimesterCMS: Inj/poisn/oth conseq of external causes comp preg, third tri | Can lead a claim | A | None |
| O9A.219 | Injury, poisoning and certain other consequences of external causes complicating pregnancy, unspecified trimesterCMS: Inj/poisn/oth conseq of external causes comp preg, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O9A.22 | Injury, poisoning and certain other consequences of external causes complicating childbirthCMS: Inj/poisn/oth conseq of external causes comp childbirth | Can lead a claim | A | None |
| O9A.23 | Injury, poisoning and certain other consequences of external causes complicating the puerperiumCMS: Inj/poisn/oth conseq of external causes comp the puerperium | Can lead a claim | A | None |
| O9A.3 Physical abuse complicating pregnancy, childbirth and the puerperium | ||||
| O9A.31 Physical abuse complicating pregnancy | ||||
| O9A.311 | Physical abuse complicating pregnancy, first trimester | Can lead a claim | A | None |
| O9A.312 | Physical abuse complicating pregnancy, second trimester | Can lead a claim | A | None |
| O9A.313 | Physical abuse complicating pregnancy, third trimester | Can lead a claim | A | None |
| O9A.319 | Physical abuse complicating pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O9A.32 | Physical abuse complicating childbirth | Can lead a claim | A | None |
| O9A.33 | Physical abuse complicating the puerperium | Can lead a claim | A | None |
| O9A.4 Sexual abuse complicating pregnancy, childbirth and the puerperium | ||||
| O9A.41 Sexual abuse complicating pregnancy | ||||
| O9A.411 | Sexual abuse complicating pregnancy, first trimester | Can lead a claim | A | None |
| O9A.412 | Sexual abuse complicating pregnancy, second trimester | Can lead a claim | A | None |
| O9A.413 | Sexual abuse complicating pregnancy, third trimester | Can lead a claim | A | None |
| O9A.419 | Sexual abuse complicating pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O9A.42 | Sexual abuse complicating childbirth | Can lead a claim | A | None |
| O9A.43 | Sexual abuse complicating the puerperium | Can lead a claim | A | None |
| O9A.5 Psychological abuse complicating pregnancy, childbirth and the puerperium | ||||
| O9A.51 Psychological abuse complicating pregnancy | ||||
| O9A.511 | Psychological abuse complicating pregnancy, first trimester | Can lead a claim | A | None |
| O9A.512 | Psychological abuse complicating pregnancy, second trimester | Can lead a claim | A | None |
| O9A.513 | Psychological abuse complicating pregnancy, third trimester | Can lead a claim | A | None |
| O9A.519 | Psychological abuse complicating pregnancy, unspecified trimesterCMS: Psychological abuse complicating pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O9A.52 | Psychological abuse complicating childbirth | Can lead a claim | A | None |
| O9A.53 | Psychological abuse complicating the puerperium | Can lead a claim | A | 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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