ICD-10 · PDGM grouping
O24 Diabetes mellitus in pregnancy, childbirth, and the puerperium
All 42 codes in the O24 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
42
Can lead a claim
37
Cannot lead a claim
5
What CMS assigns to O24
37 of the 42 codes group to MMTA - Other; 5 are assigned no clinical group. None of the 42 is assigned a comorbidity subgroup. 37 of the 42 can lead a claim.
Every code in O24
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 |
|---|---|---|---|---|
| O24.0 Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium | ||||
| O24.01 Pre-existing type 1 diabetes mellitus, in pregnancy | ||||
| O24.011 | Pre-existing type 1 diabetes mellitus, in pregnancy, first trimesterCMS: Pre-existing type 1 diabetes, in pregnancy, first trimester | Can lead a claim | A | None |
| O24.012 | Pre-existing type 1 diabetes mellitus, in pregnancy, second trimesterCMS: Pre-existing type 1 diabetes, in pregnancy, second trimester | Can lead a claim | A | None |
| O24.013 | Pre-existing type 1 diabetes mellitus, in pregnancy, third trimesterCMS: Pre-existing type 1 diabetes, in pregnancy, third trimester | Can lead a claim | A | None |
| O24.019 | Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimesterCMS: Pre-exist type 1 diabetes, in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O24.02 | Pre-existing type 1 diabetes mellitus, in childbirth | Can lead a claim | A | None |
| O24.03 | Pre-existing type 1 diabetes mellitus, in the puerperium | Can lead a claim | A | None |
| O24.1 Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium | ||||
| O24.11 Pre-existing type 2 diabetes mellitus, in pregnancy | ||||
| O24.111 | Pre-existing type 2 diabetes mellitus, in pregnancy, first trimesterCMS: Pre-existing type 2 diabetes, in pregnancy, first trimester | Can lead a claim | A | None |
| O24.112 | Pre-existing type 2 diabetes mellitus, in pregnancy, second trimesterCMS: Pre-existing type 2 diabetes, in pregnancy, second trimester | Can lead a claim | A | None |
| O24.113 | Pre-existing type 2 diabetes mellitus, in pregnancy, third trimesterCMS: Pre-existing type 2 diabetes, in pregnancy, third trimester | Can lead a claim | A | None |
| O24.119 | Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimesterCMS: Pre-exist type 2 diabetes, in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O24.12 | Pre-existing type 2 diabetes mellitus, in childbirth | Can lead a claim | A | None |
| O24.13 | Pre-existing type 2 diabetes mellitus, in the puerperium | Can lead a claim | A | None |
| O24.3 Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium | ||||
| O24.31 Unspecified pre-existing diabetes mellitus in pregnancy | ||||
| O24.311 | Unspecified pre-existing diabetes mellitus in pregnancy, first trimesterCMS: Unsp pre-existing diabetes in pregnancy, first trimester | Can lead a claim | A | None |
| O24.312 | Unspecified pre-existing diabetes mellitus in pregnancy, second trimesterCMS: Unsp pre-existing diabetes in pregnancy, second trimester | Can lead a claim | A | None |
| O24.313 | Unspecified pre-existing diabetes mellitus in pregnancy, third trimesterCMS: Unsp pre-existing diabetes in pregnancy, third trimester | Can lead a claim | A | None |
| O24.319 | Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimesterCMS: Unsp pre-existing diabetes in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O24.32 | Unspecified pre-existing diabetes mellitus in childbirth | Can lead a claim | A | None |
| O24.33 | Unspecified pre-existing diabetes mellitus in the puerperium | Can lead a claim | A | None |
| O24.4 Gestational diabetes mellitus | ||||
| O24.41 Gestational diabetes mellitus in pregnancy | ||||
| O24.410 | Gestational diabetes mellitus in pregnancy, diet controlled | Can lead a claim | A | None |
| O24.414 | Gestational diabetes mellitus in pregnancy, insulin controlledCMS: Gestational diabetes in pregnancy, insulin controlled | Can lead a claim | A | None |
| O24.415 | Gestational diabetes mellitus in pregnancy, controlled by oral hypoglycemic drugsCMS: Gestatnl diabetes in preg, ctrl by oral hypoglycemic drugs | Can lead a claim | A | None |
| O24.419 | Gestational diabetes mellitus in pregnancy, unspecified controlCMS: Gestational diabetes mellitus in pregnancy, unsp control | Can lead a claim | A | None |
| O24.42 Gestational diabetes mellitus in childbirth | ||||
| O24.420 | Gestational diabetes mellitus in childbirth, diet controlled | Can lead a claim | A | None |
| O24.424 | Gestational diabetes mellitus in childbirth, insulin controlledCMS: Gestational diabetes in childbirth, insulin controlled | Can lead a claim | A | None |
| O24.425 | Gestational diabetes mellitus in childbirth, controlled by oral hypoglycemic drugsCMS: Gestatnl diab in chldbrth, ctrl by oral hypoglycemic drugs | Can lead a claim | A | None |
| O24.429 | Gestational diabetes mellitus in childbirth, unspecified controlCMS: Gestational diabetes mellitus in childbirth, unsp control | Can lead a claim | A | None |
| O24.43 Gestational diabetes mellitus in the puerperium | ||||
| O24.430 | Gestational diabetes mellitus in the puerperium, diet controlledCMS: Gestational diabetes in the puerperium, diet controlled | Can lead a claim | A | None |
| O24.434 | Gestational diabetes mellitus in the puerperium, insulin controlledCMS: Gestational diabetes in the puerperium, insulin controlled | Can lead a claim | A | None |
| O24.435 | Gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugsCMS: Gestatnl diabetes in puerp, ctrl by oral hypoglycemic drugs | Can lead a claim | A | None |
| O24.439 | Gestational diabetes mellitus in the puerperium, unspecified controlCMS: Gestational diabetes in the puerperium, unsp control | Can lead a claim | A | None |
| O24.8 Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium | ||||
| O24.81 Other pre-existing diabetes mellitus in pregnancy | ||||
| O24.811 | Other pre-existing diabetes mellitus in pregnancy, first trimesterCMS: Oth pre-existing diabetes in pregnancy, first trimester | Can lead a claim | A | None |
| O24.812 | Other pre-existing diabetes mellitus in pregnancy, second trimesterCMS: Oth pre-existing diabetes in pregnancy, second trimester | Can lead a claim | A | None |
| O24.813 | Other pre-existing diabetes mellitus in pregnancy, third trimesterCMS: Oth pre-existing diabetes in pregnancy, third trimester | Can lead a claim | A | None |
| O24.819 | Other pre-existing diabetes mellitus in pregnancy, unspecified trimesterCMS: Oth pre-existing diabetes in pregnancy, unsp trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O24.82 | Other pre-existing diabetes mellitus in childbirth | Can lead a claim | A | None |
| O24.83 | Other pre-existing diabetes mellitus in the puerperium | Can lead a claim | A | None |
| O24.9 Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium | ||||
| O24.91 Unspecified diabetes mellitus in pregnancy | ||||
| O24.911 | Unspecified diabetes mellitus in pregnancy, first trimester | Can lead a claim | A | None |
| O24.912 | Unspecified diabetes mellitus in pregnancy, second trimester | Can lead a claim | A | None |
| O24.913 | Unspecified diabetes mellitus in pregnancy, third trimester | Can lead a claim | A | None |
| O24.919 | Unspecified diabetes mellitus in pregnancy, unspecified trimesterCMS: Unsp diabetes mellitus in pregnancy, unspecified trimester | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| O24.92 | Unspecified diabetes mellitus in childbirth | Can lead a claim | A | None |
| O24.93 | Unspecified diabetes mellitus in 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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