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    v1.0.28
    OpenPayerBilling CodesEdema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperiumICD-10-CM o14-pre-eclampsia
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    ICD-10-CM Code For Pre Eclampsia: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O14 includes diagnoses of pre-eclampsia, including pre-eclampsia with severe features and pre-eclampsia superimposed on chronic hypertension, covering new-onset hypertension in pregnancy often with proteinuria and possible end-organ involvement. These ICD-10-CM diagnosis codes are used to document clinical scenarios such as gestational hypertension with proteinuria, pre-eclampsia with severe features affecting organs like the liver, kidneys, or brain, and cases superimposed on chronic hypertensive disease, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM O14 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM O14: Pre-eclampsia Overview

    The ICD-10-CM O14 group represents hypertensive disorders specific to pregnancy characterized by new-onset hypertension with proteinuria and/or end-organ dysfunction. These diagnoses target the maternal cardiovascular and renal systems and the physiologic changes of pregnancy. Accurate coding matters for appropriate claim adjudication and to reflect clinical severity for maternal care and monitoring.

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    When to Use

    Use a code from this group when documenting new-onset hypertension in pregnancy with proteinuria or signs of end-organ involvement, including severe features such as pulmonary edema, renal impairment, or neurologic symptoms. Apply specific codes to indicate whether pre-eclampsia is mild, severe, or superimposed on chronic hypertension to reflect clinical complexity.

    ICD-10-CM Codes

    20 rows

    ICD-10-CM CodeDescription
    O14.00Mild to moderate pre-eclampsia, unspecified trimester
    O14.02Mild to moderate pre-eclampsia, second trimester
    O14.03Mild to moderate pre-eclampsia, third trimester
    O14.04Mild to moderate pre-eclampsia, complicating childbirth
    O14.05Mild to moderate pre-eclampsia, complicating the puerperium
    O14.10Severe pre-eclampsia, unspecified trimester
    O14.12Severe pre-eclampsia, second trimester
    O14.13Severe pre-eclampsia, third trimester
    O14.14Severe pre-eclampsia complicating childbirth
    O14.15Severe pre-eclampsia, complicating the puerperium
    O14.20HELLP syndrome (HELLP), unspecified trimester
    O14.22HELLP syndrome (HELLP), second trimester
    O14.23HELLP syndrome (HELLP), third trimester
    O14.24HELLP syndrome, complicating childbirth
    O14.25HELLP syndrome, complicating the puerperium
    O14.90Unspecified pre-eclampsia, unspecified trimester
    O14.92Unspecified pre-eclampsia, second trimester
    O14.93Unspecified pre-eclampsia, third trimester
    O14.94Unspecified pre-eclampsia, complicating childbirth
    O14.95Unspecified pre-eclampsia, complicating the puerperium

    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
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    Typical Clinical Scenarios

    • A 32-year-old primigravida at 36 weeks gestation presents to labor and delivery with new-onset severe frontal headache, visual disturbances, and blood pressures persistently above 160/110 mmHg. Urine protein/creatinine ratio returns elevated and laboratory studies show platelet count near the lower limit of normal and rising serum creatinine; obstetric team initiates antihypertensive therapy and plans delivery for maternal stabilization, so a diagnosis from this group is assigned for severe preeclampsia with maternal symptoms. Typical codes: O14.10, O14.12
    • A 28-year-old woman at 28 weeks gestation is seen in prenatal clinic for routine surveillance after persistent mild hypertension discovered at 24 weeks; she has mild proteinuria on repeat urinalysis but no end-organ dysfunction and symptoms are absent. Because this represents new-onset hypertension with proteinuria of pregnancy without severe features, a code denoting mild preeclampsia is assigned and she is managed with increased monitoring and fetal surveillance. Typical codes: O14.00, O14.02
    • A 35-year-old patient is admitted postpartum on day two after cesarean delivery for worsening hypertension and the development of pulmonary edema and seizure activity consistent with eclampsia that began after delivery. The postpartum timing and presence of severe complications lead to assignment of a code indicating preeclampsia with severe features or eclampsia in the puerperium to capture the complication and guide inpatient management. Typical codes: O14.90, O14.95

    Related Codes

    O10-PRE-EXISTING-HYPERTENSION-COMPLICATING-PREGNANCY

    ICD-10-CM Code For Pre-existing Hypertension Complicating Pregnancy Childbirth And The Puerperium: Group Overview

    O11-PRE-EXISTING-HYPERTENSION-WITH-PRE-ECLAMPSIA

    ICD-10-CM Code For Pre Existing Hypertension With Pre Eclampsia: Group Overview

    O12-GESTATIONAL-EDEMA-AND-PROTEINURIA

    ICD-10-CM Code For Gestational Edema And Proteinuria Without Hypertension: Group Overview

    O13-GESTATIONAL-HYPERTENSION-WITHOUT-PROTEINURIA

    ICD-10-CM Code For Gestational Hypertension Without Significant Proteinuria: Group Overview

    O15-ECLAMPSIA

    ICD-10-CM Code For Eclampsia: Group Overview

    O16-UNSPECIFIED-MATERNAL-HYPERTENSION

    ICD-10-CM Code For Unspecified Maternal Hypertension: 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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