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    v1.0.28
    OpenPayerBilling CodesOther maternal disorders predominantly related to pregnancyICD-10-CM o24-diabetes-mellitus-in-pregnancy
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    ICD-10-CM Code For Diabetes Mellitus In Pregnancy, Childbirth, And The Puerperium: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O24 includes diabetes mellitus that complicates pregnancy, childbirth, and the puerperium, including preexisting diabetes with pregnancy-related complications and gestational diabetes. These ICD-10-CM diagnosis codes are used to document maternal hyperglycemia during pregnancy, specify the type and control of diabetes, and capture associated complications affecting maternal or fetal health. Accurate coding within the ICD-10-CM O24 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM O24: Diabetes Mellitus In Pregnancy, Childbirth, And The Puerperium Overview

    This group covers diabetes mellitus that arises or complicates pregnancy, childbirth, and the postpartum period, affecting maternal metabolic control and pregnancy outcomes. It targets endocrine and metabolic disorders during pregnancy and the puerperium. Accurate coding is important for clinical documentation and supports appropriate reimbursement for pregnancy-related care.

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    When to Use

    Use a code from this group when documenting maternal diabetes identified before or during pregnancy that affects management, labor and delivery, or the postpartum period. Select the specific code to reflect whether the diabetes is gestational or preexisting and to indicate any complications or control status documented by the provider.

    ICD-10-CM Codes

    42 rows

    ICD-10-CM CodeDescription
    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
    O24.111Pre-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
    O24.311Unspecified 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
    O24.410Gestational diabetes mellitus in pregnancy, diet controlled
    O24.414Gestational diabetes mellitus in pregnancy, insulin controlled

    Showing 1–20 of 42

    DRG Codes

    9 rows

    DRG CodeDescription
    769Postpartum and Post Abortion Diagnoses with O.R. Procedures
    776Postpartum and Post Abortion Diagnoses without O.R. Procedures
    817Other Antepartum Diagnoses with O.R. Procedures with MCC
    818Other Antepartum Diagnoses with O.R. Procedures with CC
    819Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
    831Other Antepartum Diagnoses without O.R. Procedures with MCC
    832Other Antepartum Diagnoses without O.R. Procedures with CC
    833Other Antepartum Diagnoses without O.R. Procedures without CC/MCC
    [object Object]

    Typical Clinical Scenarios

    • A pregnant woman in her second trimester with previously diagnosed type 1 diabetes presents for routine prenatal care with increasing insulin requirements and hyperglycemia despite intensified insulin therapy; the clinician documents that diabetes is preexisting and controlled with insulin during pregnancy, so a pregnancy-related diabetes code is assigned to capture the pregestational type 1 diabetes managed in pregnancy. Typical codes: O24.011, O24.013
    • A woman with no prior history of diabetes is diagnosed with gestational diabetes after an abnormal oral glucose tolerance test in the late second trimester; she presents to the antenatal clinic for dietary counseling and glucose monitoring, and the provider assigns a code that indicates gestational diabetes mellitus complicating pregnancy (diet- or medication-managed depending on treatment). Typical codes: O24.410, O24.419
    • A patient with preexisting type 2 diabetes is admitted in labor with poor glycemic control and ketoacidosis as a complication of pregnancy, requiring emergency stabilization and close obstetric monitoring; the encounter is coded to reflect pregestational diabetes with a current complication related to pregnancy to document the acute metabolic decompensation. Typical codes: O24.311, O24.319

    Related Codes

    O20-HEMORRHAGE-IN-EARLY-PREGNANCY

    ICD-10-CM Code For Hemorrhage In Early Pregnancy: Group Overview

    O21-EXCESSIVE-VOMITING-IN-PREGNANCY

    ICD-10-CM Code For Excessive Vomiting In Pregnancy: Group Overview

    O22-VENOUS-COMPLICATIONS-AND-HEMORRHOIDS

    ICD-10-CM Code For Venous Complications And Hemorrhoids In Pregnancy: Group Overview

    O23-INFECTIONS-OF-GENITOURINARY-TRACT

    ICD-10-CM Code For Infections Of Genitourinary Tract In Pregnancy: Group Overview

    O25-MALNUTRITION-IN-PREGNANCY

    ICD-10-CM Code For Malnutrition In Pregnancy Childbirth And The Puerperium: Group Overview

    O26-MATERNAL-CARE-OTHER-CONDITIONS

    ICD-10-CM Code For Maternal Care For Other Conditions Predominantly Related To Pregnancy: Group Overview

    O28-ABNORMAL-ANTENATAL-SCREENING-FINDINGS

    ICD-10-CM Code For Abnormal Findings On Antenatal Screening Of Mother: Group Overview

    O29-COMPLICATIONS-OF-ANESTHESIA

    ICD-10-CM Code For Complications Of Anesthesia During Pregnancy: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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