Diabetes mellitus in pregnancy, childbirth, and the puerperium (O24) ICD-10-CM
The O24 code range covers diabetes mellitus in pregnancy, childbirth, and the puerperium with 57 ICD-10-CM diagnosis codes. 42 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the O24 Range 57 codes · 42 billable
- O24 Diabetes mellitus in pregnancy, childbirth, and the puerperiumNon-billable
- O24.0 Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperiumNon-billable
- O24.01 Pre-existing type 1 diabetes mellitus, in pregnancyNon-billable
- 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 puerperiumNon-billable
- O24.11 Pre-existing type 2 diabetes mellitus, in pregnancyNon-billable
- 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 puerperiumNon-billable
- O24.31 Unspecified pre-existing diabetes mellitus in pregnancyNon-billable
- 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 mellitusNon-billable
- O24.41 Gestational diabetes mellitus in pregnancyNon-billable
- 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
- O24.42 Gestational diabetes mellitus in childbirthNon-billable
- O24.420 Gestational diabetes mellitus in childbirth, diet controlled
- O24.424 Gestational diabetes mellitus in childbirth, insulin controlled
- O24.425 Gestational diabetes mellitus in childbirth, controlled by oral hypoglycemic drugs
- O24.429 Gestational diabetes mellitus in childbirth, unspecified control
- O24.43 Gestational diabetes mellitus in the puerperiumNon-billable
- O24.430 Gestational diabetes mellitus in the puerperium, diet controlled
- O24.434 Gestational diabetes mellitus in the puerperium, insulin controlled
- O24.435 Gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs
- O24.439 Gestational diabetes mellitus in the puerperium, unspecified control
- O24.8 Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperiumNon-billable
- O24.81 Other pre-existing diabetes mellitus in pregnancyNon-billable
- O24.811 Other pre-existing diabetes mellitus in pregnancy, first trimester
- O24.812 Other pre-existing diabetes mellitus in pregnancy, second trimester
- O24.813 Other pre-existing diabetes mellitus in pregnancy, third trimester
- O24.819 Other pre-existing diabetes mellitus in pregnancy, unspecified trimester
- O24.82 Other pre-existing diabetes mellitus in childbirth
- O24.83 Other pre-existing diabetes mellitus in the puerperium
- O24.9 Unspecified diabetes mellitus in pregnancy, childbirth and the puerperiumNon-billable
- O24.91 Unspecified diabetes mellitus in pregnancyNon-billable
- O24.911 Unspecified diabetes mellitus in pregnancy, first trimester
- O24.912 Unspecified diabetes mellitus in pregnancy, second trimester
- O24.913 Unspecified diabetes mellitus in pregnancy, third trimester
- O24.919 Unspecified diabetes mellitus in pregnancy, unspecified trimester
- O24.92 Unspecified diabetes mellitus in childbirth
- O24.93 Unspecified diabetes mellitus in the puerperium
About the O24 Code Range
ICD-10 code section O24 is used to classify different types of diabetes mellitus occurring during pregnancy, childbirth, and the postpartum period, known as the puerperium. This section includes codes for pre-existing type 1 and type 2 diabetes, unspecified diabetes, other pre-existing diabetes types, and gestational diabetes.
This section covers specific codes that identify the timing of the condition, such as which trimester of pregnancy (first, second, or third), childbirth, or the puerperium the diabetes affects. For example, O24.01 refers to pre-existing type 1 diabetes mellitus during pregnancy, while O24.410 identifies gestational diabetes mellitus managed by diet during pregnancy. Synonyms like “pregestational diabetes mellitus,” “pregnancy and type 1 or type 2 diabetes mellitus,” and “gestational diabetes mellitus class A1 or A2” help clarify code selection. These codes are essential for accurately documenting the impact of diabetes on maternal and fetal health during these specific phases, providing clear guidance for healthcare providers and medical coders seeking the ICD-10 code for diabetes complicating pregnancy and related periods.
Questions About This Page
How many billable codes are in the O24 range?
Of the 57 codes in this range, 42 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the O24 range classify?
The range classifies diabetes mellitus in pregnancy, childbirth, and the puerperium. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
