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

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O12 includes gestational or pregnancy-induced edema and proteinuria without hypertension, covering isolated proteinuria and fluid retention in pregnancy not associated with elevated blood pressure. These ICD-10-CM diagnosis codes are used to document maternal renal protein loss and edema severity, maternal-fetal risk assessment, and monitoring needs during pregnancy. Accurate coding within the ICD-10-CM O12 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM O12: Gestational [pregnancy-induced] Edema And Proteinuria Without Hypertension Overview

This group represents pregnancy-associated edema and proteinuria that occur without concurrent hypertension, typically arising in the second half of pregnancy and reflecting renal glomerular involvement. It targets obstetric and renal manifestations of pregnancy and differentiates from hypertensive disorders of pregnancy. Accurate coding matters for appropriate claim processing and to reflect the clinical complexity affecting maternal and fetal care.

When to Use

Use a code from this group when a pregnant patient presents with documented proteinuria and clinically significant edema in the absence of elevated blood pressure. These codes apply when the provider has determined that the findings are pregnancy-related and not part of a chronic renal or hypertensive condition.

ICD-10-CM Codes

18 rows

ICD-10-CM Code	Description
O12.00	Gestational edema, unspecified trimester
O12.01	Gestational edema, first trimester
O12.02	Gestational edema, second trimester
O12.03	Gestational edema, third trimester
O12.04	Gestational edema, complicating childbirth
O12.05	Gestational edema, complicating the puerperium
O12.10	Gestational proteinuria, unspecified trimester
O12.11	Gestational proteinuria, first trimester
O12.12	Gestational proteinuria, second trimester
O12.13	Gestational proteinuria, third trimester
O12.14	Gestational proteinuria, complicating childbirth
O12.15	Gestational proteinuria, complicating the puerperium
O12.20	Gestational edema with proteinuria, unspecified trimester
O12.21	Gestational edema with proteinuria, first trimester
O12.22	Gestational edema with proteinuria, second trimester
O12.23	Gestational edema with proteinuria, third trimester
O12.24	Gestational edema with proteinuria, complicating childbirth
O12.25	Gestational edema with proteinuria, complicating the puerperium

DRG Codes

9 rows

DRG Code	Description
769	Postpartum and Post Abortion Diagnoses with O.R. Procedures
776	Postpartum and Post Abortion Diagnoses without O.R. Procedures
817	Other Antepartum Diagnoses with O.R. Procedures with MCC
818	Other Antepartum Diagnoses with O.R. Procedures with CC
819	Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
831	Other Antepartum Diagnoses without O.R. Procedures with MCC
832	Other Antepartum Diagnoses without O.R. Procedures with CC
833	Other Antepartum Diagnoses without O.R. Procedures without CC/MCC
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Typical Clinical Scenarios

A 28-year-old primigravida at 32 weeks gestation presents to the prenatal clinic with new-onset generalized swelling of the face, hands, and lower extremities and a reported weight gain of 6 pounds in one week. Urine dipstick and subsequent urine protein-to-creatinine ratio confirm significant proteinuria while blood pressure remains within normal limits; no signs of preexisting hypertension are present. Because this is gestation-associated edema with proteinuria but without hypertension, a code from this group is assigned to capture the pregnancy-related proteinuric disorder. Typical codes: O12.12, O12.10
A 36-year-old multiparous woman at 38 weeks gestation is admitted in labor after routine prenatal labs show mild proteinuria on 24-hour urine collection, persistent peripheral edema, and otherwise normal blood pressures throughout pregnancy. The proteinuria was identified during late-pregnancy surveillance and is being managed expectantly during labor; the diagnosis documents pregnancy-induced proteinuria without hypertensive disease as a pregnancy complication influencing delivery planning. Typical codes: O12.22, O12.20
A 24-year-old pregnant patient at 30 weeks presents to the emergency department with progressive swelling and frothy urine; she has documented proteinuria and hypoalbuminemia but serial blood pressure readings are below hypertensive thresholds and there is no prior history of chronic hypertension. This acute deterioration in maternal fluid status secondary to significant protein loss in pregnancy necessitates coding for gestational edema and proteinuria without hypertension to reflect the complication requiring inpatient monitoring and possible early intervention. Typical codes: O12.02, O12.00

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

O13-GESTATIONAL-HYPERTENSION-WITHOUT-PROTEINURIA

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

O14-PRE-ECLAMPSIA

ICD-10-CM Code For Pre Eclampsia: 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.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.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.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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When to Use

ICD-10-CM Codes

18 rows

ICD-10-CM Code	Description
O12.00	Gestational edema, unspecified trimester
O12.01	Gestational edema, first trimester
O12.02	Gestational edema, second trimester
O12.03	Gestational edema, third trimester
O12.04	Gestational edema, complicating childbirth
O12.05	Gestational edema, complicating the puerperium
O12.10	Gestational proteinuria, unspecified trimester
O12.11	Gestational proteinuria, first trimester
O12.12	Gestational proteinuria, second trimester
O12.13	Gestational proteinuria, third trimester
O12.14	Gestational proteinuria, complicating childbirth
O12.15	Gestational proteinuria, complicating the puerperium
O12.20	Gestational edema with proteinuria, unspecified trimester
O12.21	Gestational edema with proteinuria, first trimester
O12.22	Gestational edema with proteinuria, second trimester
O12.23	Gestational edema with proteinuria, third trimester
O12.24	Gestational edema with proteinuria, complicating childbirth
O12.25	Gestational edema with proteinuria, complicating the puerperium

DRG Codes

9 rows

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

Typical Clinical Scenarios

A 28-year-old primigravida at 32 weeks gestation presents to the prenatal clinic with new-onset generalized swelling of the face, hands, and lower extremities and a reported weight gain of 6 pounds in one week. Urine dipstick and subsequent urine protein-to-creatinine ratio confirm significant proteinuria while blood pressure remains within normal limits; no signs of preexisting hypertension are present. Because this is gestation-associated edema with proteinuria but without hypertension, a code from this group is assigned to capture the pregnancy-related proteinuric disorder. Typical codes: O12.12, O12.10
A 36-year-old multiparous woman at 38 weeks gestation is admitted in labor after routine prenatal labs show mild proteinuria on 24-hour urine collection, persistent peripheral edema, and otherwise normal blood pressures throughout pregnancy. The proteinuria was identified during late-pregnancy surveillance and is being managed expectantly during labor; the diagnosis documents pregnancy-induced proteinuria without hypertensive disease as a pregnancy complication influencing delivery planning. Typical codes: O12.22, O12.20
A 24-year-old pregnant patient at 30 weeks presents to the emergency department with progressive swelling and frothy urine; she has documented proteinuria and hypoalbuminemia but serial blood pressure readings are below hypertensive thresholds and there is no prior history of chronic hypertension. This acute deterioration in maternal fluid status secondary to significant protein loss in pregnancy necessitates coding for gestational edema and proteinuria without hypertension to reflect the complication requiring inpatient monitoring and possible early intervention. Typical codes: O12.02, O12.00

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

O13-GESTATIONAL-HYPERTENSION-WITHOUT-PROTEINURIA

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

O14-PRE-ECLAMPSIA

ICD-10-CM Code For Pre Eclampsia: 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.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.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.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.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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

Sign up for ICD-10-CM Code For Gestational Edema And Proteinuria Without Hypertension: Group Overview policy alerts

ICD-10-CM O12: Gestational [pregnancy-induced] Edema And Proteinuria Without Hypertension Overview

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

Sign up for ICD-10-CM Code For Gestational Edema And Proteinuria Without Hypertension: Group Overview policy alerts

ICD-10-CM O12: Gestational [pregnancy-induced] Edema And Proteinuria Without Hypertension Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

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

Sign up for ICD-10-CM Code For Gestational Edema And Proteinuria Without Hypertension: Group Overview policy alerts

ICD-10-CM O12: Gestational [pregnancy-induced] Edema And Proteinuria Without Hypertension Overview

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

Sign up for ICD-10-CM Code For Gestational Edema And Proteinuria Without Hypertension: Group Overview policy alerts

ICD-10-CM O12: Gestational [pregnancy-induced] Edema And Proteinuria Without Hypertension Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are included in the O12 group for gestational edema?

How does the O12 group differ from hypertensive disorders of pregnancy in coding?

Which codes in O12 capture gestational proteinuria specifically?

What codes should be used when both edema and proteinuria occur without hypertension?

How does coding O12 affect claim adjudication and reimbursement?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are included in the O12 group for gestational edema?

How does the O12 group differ from hypertensive disorders of pregnancy in coding?

Which codes in O12 capture gestational proteinuria specifically?

What codes should be used when both edema and proteinuria occur without hypertension?

How does coding O12 affect claim adjudication and reimbursement?

References