ICD-10-CM category
O24 Diabetes mellitus in pregnancy
O24 is a category, not a billable code. Report one of the 42 complete codes below.
O24.0…
6 codes
- O24.011Pre-existing type 1 diabetes mellitus, in pregnancy, first trimester
- O24.012Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester
- O24.013Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester
- O24.019Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester
- O24.02Pre-existing type 1 diabetes mellitus, in childbirth
- O24.03Pre-existing type 1 diabetes mellitus, in the puerperium
O24.1…
6 codes
- O24.111Pre-existing type 2 diabetes mellitus, in pregnancy, first trimester
- O24.112Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester
- O24.113Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester
- O24.119Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester
- O24.12Pre-existing type 2 diabetes mellitus, in childbirth
- O24.13Pre-existing type 2 diabetes mellitus, in the puerperium
O24.3…
6 codes
- O24.311Unspecified pre-existing diabetes mellitus in pregnancy, first trimester
- O24.312Unspecified pre-existing diabetes mellitus in pregnancy, second trimester
- O24.313Unspecified pre-existing diabetes mellitus in pregnancy, third trimester
- O24.319Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimester
- O24.32Unspecified pre-existing diabetes mellitus in childbirth
- O24.33Unspecified pre-existing diabetes mellitus in the puerperium
O24.4…
12 codes
- O24.410Gestational diabetes mellitus in pregnancy, diet controlled
- O24.414Gestational diabetes mellitus in pregnancy, insulin controlled
- O24.415Gestational diabetes mellitus in pregnancy, controlled by oral hypoglycemic drugs
- O24.419Gestational diabetes mellitus in pregnancy, unspecified control
- O24.420Gestational diabetes mellitus in childbirth, diet controlled
- O24.424Gestational diabetes mellitus in childbirth, insulin controlled
- O24.425Gestational diabetes mellitus in childbirth, controlled by oral hypoglycemic drugs
- O24.429Gestational diabetes mellitus in childbirth, unspecified control
- O24.430Gestational diabetes mellitus in the puerperium, diet controlled
- O24.434Gestational diabetes mellitus in the puerperium, insulin controlled
- O24.435Gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs
- O24.439Gestational diabetes mellitus in the puerperium, unspecified control
O24.8…
6 codes
- O24.811Other pre-existing diabetes mellitus in pregnancy, first trimester
- O24.812Other pre-existing diabetes mellitus in pregnancy, second trimester
- O24.813Other pre-existing diabetes mellitus in pregnancy, third trimester
- O24.819Other pre-existing diabetes mellitus in pregnancy, unspecified trimester
- O24.82Other pre-existing diabetes mellitus in childbirth
- O24.83Other pre-existing diabetes mellitus in the puerperium
O24.9…
6 codes
- O24.911Unspecified diabetes mellitus in pregnancy, first trimester
- O24.912Unspecified diabetes mellitus in pregnancy, second trimester
- O24.913Unspecified diabetes mellitus in pregnancy, third trimester
- O24.919Unspecified diabetes mellitus in pregnancy, unspecified trimester
- O24.92Unspecified diabetes mellitus in childbirth
- O24.93Unspecified diabetes mellitus in the puerperium
Outside the US? O24 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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