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 2027, 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
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the O24 range.
Diabetes, Gestational
Diabetes mellitus induced by PREGNANCY but resolved at the end of pregnancy. It does not include previously diagnosed diabetics who become pregnant (PREGNANCY IN DIABETICS). Gestational diabetes usually develops in late pregnancy when insulin antagonistic hormones peaks leading to INSULIN RESISTANCE; GLUCOSE INTOLERANCE; and HYPERGLYCEMIA.
Pre-Gestational Diabetes
Diabetes diagnosed before current pregnancy. (reVITALize)
About the O24 Code Range
Diabetes in pregnancy, childbirth, or the puerperium, the period after childbirth, falls under O24.
The first subdivisions separate pre-existing type 1 diabetes (O24.0), type 2 diabetes (O24.1), unspecified pre-existing diabetes (O24.3), and other pre-existing diabetes (O24.8). O24.4 identifies gestational diabetes, while O24.9 identifies unspecified diabetes.
Each group separates pregnancy, childbirth, and the puerperium. Pregnancy codes outside the gestational group distinguish the trimester or an unspecified trimester. Gestational diabetes codes instead distinguish diet, insulin, oral drugs, or unspecified control within each period.
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, 2026 through September 30, 2027. 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 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
