O24 Diabetes mellitus in pregnancy, childbirth, and the puerperium

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Diabetes mellitus in pregnancy, childbirth, and the puerperium is O24 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
O20-O29: Other maternal disorders predominantly related to pregnancy (O20-O29)
Category O24
57 codes (42 billable)
FY2026 Status
Stable since FY2024

Official Coding Guidelines

Diabetes in pregnancy: assign O24 (text truncated)

g. Diabetes mellitus in pregnancy Diabetes mellitus is a significant complicating factor in pregnancy. Pregnant patients who are diabetic should be assigned a code from category O24,

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.15.g
Use O24.4 for gestational; don't combine with other O24

Codes for gestational diabetes are in subcategory O24.4, Gestational diabetes mellitus. No other code from category O24, Diabetes mellitus in pregnancy, childbirth, and the puerperium, should be used with a code from O24.4.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.15.i

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

More Specific Codes

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 trimester O24.012 Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester O24.013 Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester O24.019 Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester O24.02 Pre-existing type 1 diabetes mellitus, in childbirth O24.03 Pre-existing type 1 diabetes mellitus, in the puerperium 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 trimester O24.112 Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester O24.113 Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester O24.119 Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester O24.12 Pre-existing type 2 diabetes mellitus, in childbirth O24.13 Pre-existing type 2 diabetes mellitus, in the puerperium 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 trimester O24.312 Unspecified pre-existing diabetes mellitus in pregnancy, second trimester O24.313 Unspecified pre-existing diabetes mellitus in pregnancy, third trimester O24.319 Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimester O24.32 Unspecified pre-existing diabetes mellitus in childbirth O24.33 Unspecified pre-existing diabetes mellitus in the puerperium O24.4 Gestational diabetes mellitus O24.41 Gestational diabetes mellitus in pregnancy O24.410 Gestational diabetes mellitus in pregnancy, diet controlled O24.414 Gestational diabetes mellitus in pregnancy, insulin controlled O24.415 Gestational diabetes mellitus in pregnancy, controlled by oral hypoglycemic drugs O24.419 Gestational diabetes mellitus in pregnancy, unspecified control

Related Codes in O24

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 trimester O24.012 Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester O24.013 Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester O24.019 Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester O24.02 Pre-existing type 1 diabetes mellitus, in childbirth O24.03 Pre-existing type 1 diabetes mellitus, in the puerperium 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 trimester O24.112 Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester O24.113 Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester O24.119 Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester O24.12 Pre-existing type 2 diabetes mellitus, in childbirth O24.13 Pre-existing type 2 diabetes mellitus, in the puerperium 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 trimester O24.312 Unspecified pre-existing diabetes mellitus in pregnancy, second trimester
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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