ICD-10 · PDGM grouping
O46 Antepartum hemorrhage, not elsewhere classified
All 24 codes in the O46 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.
Codes in family
24
Can lead a claim
18
Cannot lead a claim
6
What CMS assigns to O46
18 of the 24 codes group to MMTA - Other; 6 are assigned no clinical group. None of the 24 is assigned a comorbidity subgroup. 18 of the 24 can lead a claim.
Every code in O46
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 |
|---|---|---|---|---|
| O46.0 Antepartum hemorrhage with coagulation defect | ||||
| O46.00 Antepartum hemorrhage with coagulation defect, unspecified | ||||
| O46.001 | Antepartum hemorrhage with coagulation defect, unspecified, first trimesterCMS: Antepartum hemorrhage w coag defect, unsp, first trimester | Can lead a claim | A | None |
| O46.002 | Antepartum hemorrhage with coagulation defect, unspecified, second trimesterCMS: Antepartum hemorrhage w coag defect, unsp, second trimester | Can lead a claim | A | None |
| O46.003 | Antepartum hemorrhage with coagulation defect, unspecified, third trimesterCMS: Antepartum hemorrhage w coag defect, unsp, third trimester | Can lead a claim | A | None |
| O46.009 | Antepartum hemorrhage with coagulation defect, unspecified, unspecified trimesterCMS: Antepartum hemorrhage w coag defect, unsp, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O46.01 Antepartum hemorrhage with afibrinogenemia | ||||
| O46.011 | Antepartum hemorrhage with afibrinogenemia, first trimester | Can lead a claim | A | None |
| O46.012 | Antepartum hemorrhage with afibrinogenemia, second trimester | Can lead a claim | A | None |
| O46.013 | Antepartum hemorrhage with afibrinogenemia, third trimester | Can lead a claim | A | None |
| O46.019 | Antepartum hemorrhage with afibrinogenemia, unspecified trimesterCMS: Antepartum hemorrhage with afibrinogenemia, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O46.02 Antepartum hemorrhage with disseminated intravascular coagulation | ||||
| O46.021 | Antepartum hemorrhage with disseminated intravascular coagulation, first trimesterCMS: Antepart hemorrhage w dissem intravasc coag, first trimester | Can lead a claim | A | None |
| O46.022 | Antepartum hemorrhage with disseminated intravascular coagulation, second trimesterCMS: Antepart hemor w dissem intravasc coag, second trimester | Can lead a claim | A | None |
| O46.023 | Antepartum hemorrhage with disseminated intravascular coagulation, third trimesterCMS: Antepart hemorrhage w dissem intravasc coag, third trimester | Can lead a claim | A | None |
| O46.029 | Antepartum hemorrhage with disseminated intravascular coagulation, unspecified trimesterCMS: Antepart hemorrhage w dissem intravasc coag, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O46.09 Antepartum hemorrhage with other coagulation defect | ||||
| O46.091 | Antepartum hemorrhage with other coagulation defect, first trimesterCMS: Antepartum hemorrhage w oth coag defect, first trimester | Can lead a claim | A | None |
| O46.092 | Antepartum hemorrhage with other coagulation defect, second trimesterCMS: Antepartum hemorrhage w oth coag defect, second trimester | Can lead a claim | A | None |
| O46.093 | Antepartum hemorrhage with other coagulation defect, third trimesterCMS: Antepartum hemorrhage w oth coag defect, third trimester | Can lead a claim | A | None |
| O46.099 | Antepartum hemorrhage with other coagulation defect, unspecified trimesterCMS: Antepartum hemorrhage w oth coag defect, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O46.8 Other antepartum hemorrhage | ||||
| O46.8X Other antepartum hemorrhage | ||||
| O46.8X1 | Other antepartum hemorrhage, first trimester | Can lead a claim | A | None |
| O46.8X2 | Other antepartum hemorrhage, second trimester | Can lead a claim | A | None |
| O46.8X3 | Other antepartum hemorrhage, third trimester | Can lead a claim | A | None |
| O46.8X9 | Other antepartum hemorrhage, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O46.9 Antepartum hemorrhage, unspecified | ||||
| O46.90 | Antepartum hemorrhage, unspecified, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O46.91 | Antepartum hemorrhage, unspecified, first trimester | Can lead a claim | A | None |
| O46.92 | Antepartum hemorrhage, unspecified, second trimester | Can lead a claim | A | None |
| O46.93 | Antepartum hemorrhage, unspecified, third trimester | 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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