ICD-10 · PDGM grouping
O45 Premature separation of placenta [abruptio placentae]
All 24 codes in the O45 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
24
Can lead a claim
17
Cannot lead a claim
7
What CMS assigns to O45
17 of the 24 codes group to MMTA - Other; 7 are assigned no clinical group. None of the 24 is assigned a comorbidity subgroup. 17 of the 24 can lead a claim.
Every code in O45
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 |
|---|---|---|---|---|
| O45.0 Premature separation of placenta with coagulation defect | ||||
| O45.00 Premature separation of placenta with coagulation defect, unspecified | ||||
| O45.001 | Premature separation of placenta with coagulation defect, unspecified, first trimesterCMS: Prem separtn of placenta w coag defect, unsp, first tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.002 | Premature separation of placenta with coagulation defect, unspecified, second trimesterCMS: Prem separtn of placenta w coag defect, unsp, second tri | Can lead a claim | A | None |
| O45.003 | Premature separation of placenta with coagulation defect, unspecified, third trimesterCMS: Prem separtn of placenta w coag defect, unsp, third tri | Can lead a claim | A | None |
| O45.009 | Premature separation of placenta with coagulation defect, unspecified, unspecified trimesterCMS: Prem separtn of placenta w coag defect, unsp, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.01 Premature separation of placenta with afibrinogenemia | ||||
| O45.011 | Premature separation of placenta with afibrinogenemia, first trimesterCMS: Prem separtn of placenta w afibrinogenemia, first trimester | Can lead a claim | A | None |
| O45.012 | Premature separation of placenta with afibrinogenemia, second trimesterCMS: Prem separtn of placenta w afibrinogenemia, second trimester | Can lead a claim | A | None |
| O45.013 | Premature separation of placenta with afibrinogenemia, third trimesterCMS: Prem separtn of placenta w afibrinogenemia, third trimester | Can lead a claim | A | None |
| O45.019 | Premature separation of placenta with afibrinogenemia, unspecified trimesterCMS: Prem separtn of placenta w afibrinogenemia, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.02 Premature separation of placenta with disseminated intravascular coagulation | ||||
| O45.021 | Premature separation of placenta with disseminated intravascular coagulation, first trimesterCMS: Prem separtn of placenta w dissem intravasc coag, first tri | Can lead a claim | A | None |
| O45.022 | Premature separation of placenta with disseminated intravascular coagulation, second trimesterCMS: Prem separtn of placenta w dissem intravasc coag, second tri | Can lead a claim | A | None |
| O45.023 | Premature separation of placenta with disseminated intravascular coagulation, third trimesterCMS: Prem separtn of placenta w dissem intravasc coag, third tri | Can lead a claim | A | None |
| O45.029 | Premature separation of placenta with disseminated intravascular coagulation, unspecified trimesterCMS: Prem separtn of placenta w dissem intravasc coag, unsp tri | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.09 Premature separation of placenta with other coagulation defect | ||||
| O45.091 | Premature separation of placenta with other coagulation defect, first trimesterCMS: Prem separtn of placenta w oth coag defect, first trimester | Can lead a claim | A | None |
| O45.092 | Premature separation of placenta with other coagulation defect, second trimesterCMS: Prem separtn of placenta w oth coag defect, second trimester | Can lead a claim | A | None |
| O45.093 | Premature separation of placenta with other coagulation defect, third trimesterCMS: Prem separtn of placenta w oth coag defect, third trimester | Can lead a claim | A | None |
| O45.099 | Premature separation of placenta with other coagulation defect, unspecified trimesterCMS: Prem separtn of placenta w oth coag defect, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.8 Other premature separation of placenta | ||||
| O45.8X Other premature separation of placenta | ||||
| O45.8X1 | Other premature separation of placenta, first trimester | Can lead a claim | A | None |
| O45.8X2 | Other premature separation of placenta, second trimester | Can lead a claim | A | None |
| O45.8X3 | Other premature separation of placenta, third trimester | Can lead a claim | A | None |
| O45.8X9 | Other premature separation of placenta, unspecified trimesterCMS: Other premature separation of placenta, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.9 Premature separation of placenta, unspecified | ||||
| O45.90 | Premature separation of placenta, unspecified, unspecified trimesterCMS: Premature separation of placenta, unsp, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O45.91 | Premature separation of placenta, unspecified, first trimesterCMS: Premature separation of placenta, unsp, first trimester | Can lead a claim | A | None |
| O45.92 | Premature separation of placenta, unspecified, second trimesterCMS: Premature separation of placenta, unsp, second trimester | Can lead a claim | A | None |
| O45.93 | Premature separation of placenta, unspecified, third trimesterCMS: Premature separation of placenta, unsp, 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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