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ICD-10-CM · FY 2026 APRIL UPDATE

O24

Diabetes mellitus in pregnancy, childbirth, and the puerperium

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
O24.0Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperiumCategory
O24.01Pre-existing type 1 diabetes mellitus, in pregnancyCategory
O24.011Pre-existing type 1 diabetes mellitus, in pregnancy, first trimesterBillable
O24.012Pre-existing type 1 diabetes mellitus, in pregnancy, second trimesterBillable
O24.013Pre-existing type 1 diabetes mellitus, in pregnancy, third trimesterBillable
O24.019Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimesterBillable
O24.02Pre-existing type 1 diabetes mellitus, in childbirthBillable
O24.03Pre-existing type 1 diabetes mellitus, in the puerperiumBillable
O24.1Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperiumCategory
O24.11Pre-existing type 2 diabetes mellitus, in pregnancyCategory
O24.111Pre-existing type 2 diabetes mellitus, in pregnancy, first trimesterBillable
O24.112Pre-existing type 2 diabetes mellitus, in pregnancy, second trimesterBillable
O24.113Pre-existing type 2 diabetes mellitus, in pregnancy, third trimesterBillable
O24.119Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimesterBillable
O24.12Pre-existing type 2 diabetes mellitus, in childbirthBillable
O24.13Pre-existing type 2 diabetes mellitus, in the puerperiumBillable
O24.3Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperiumCategory
O24.31Unspecified pre-existing diabetes mellitus in pregnancyCategory
O24.311Unspecified pre-existing diabetes mellitus in pregnancy, first trimesterBillable
O24.312Unspecified pre-existing diabetes mellitus in pregnancy, second trimesterBillable
O24.313Unspecified pre-existing diabetes mellitus in pregnancy, third trimesterBillable
O24.319Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimesterBillable
O24.32Unspecified pre-existing diabetes mellitus in childbirthBillable
O24.33Unspecified pre-existing diabetes mellitus in the puerperiumBillable
O24.4Gestational diabetes mellitusCategory
O24.41Gestational diabetes mellitus in pregnancyCategory
O24.410Gestational diabetes mellitus in pregnancy, diet controlledBillable
O24.414Gestational diabetes mellitus in pregnancy, insulin controlledBillable
O24.415Gestational diabetes mellitus in pregnancy, controlled by oral hypoglycemic drugsBillable
O24.419Gestational diabetes mellitus in pregnancy, unspecified controlBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

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ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.