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

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O13 includes gestational or pregnancy-induced hypertension without significant proteinuria, covering elevated blood pressure identified during pregnancy or the puerperium that does not meet criteria for preeclampsia. These ICD-10-CM diagnosis codes are used to document maternal hypertensive conditions related to pregnancy, capturing severity and timing of onset relevant to obstetric management. Accurate coding within the ICD-10-CM O13 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

Customize your policy alerts

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

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

ICD-10-CM O13: Gestational [pregnancy-induced] Hypertension Without Significant Proteinuria Overview

The diagnoses in this group represent new-onset hypertension occurring after 20 weeks of pregnancy without clinically significant proteinuria or features of preeclampsia. These codes target hypertensive disorders specific to pregnancy and the puerperium and relate to maternal cardiovascular and obstetric care. Accurate coding matters because it supports appropriate reimbursement and ensures the medical record reflects pregnancy-specific risk for monitoring and care coordination.

When to Use

Use a code from this group when a pregnant or postpartum patient has documented new-onset hypertension after 20 weeks gestation without significant proteinuria or features of preeclampsia. Do not use these codes if there is documented proteinuria or other signs that meet criteria for preeclampsia or other hypertensive disorders.

ICD-10-CM Codes

6 rows

ICD-10-CM Code	Description
O13.1	Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
O13.2	Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester
O13.3	Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester
O13.4	Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
O13.5	Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium
O13.9	Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

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

Pregnant patient in the third trimester presents to the obstetric triage unit with new-onset elevated blood pressures measured repeatedly above 140/90 mm Hg without protein on urinalysis. She reports mild headache and swelling of the hands but urine dipstick and spot protein/creatinine ratio are negative for significant proteinuria, so a pregnancy-induced hypertension diagnosis without significant proteinuria is assigned. Typical codes: O13.1, O13.9
Woman at 28 weeks gestation seen in prenatal clinic for routine follow-up with persistent systolic readings in the 150s and diastolic in the 90s over several visits, no history of chronic hypertension and no proteinuria detected on laboratory testing; management is outpatient blood pressure monitoring and adjustment of activity. Because hypertension developed during pregnancy without significant protein loss, this is coded as gestational hypertension without significant proteinuria. Typical codes: O13.2
Pregnant patient admitted for evaluation of new generalized edema and elevated blood pressure discovered incidentally on admission for preterm labor; repeated blood pressures confirm hypertension but serial urines and a 24-hour urine collection show protein excretion below thresholds for preeclampsia, so the hypertensive disorder without significant proteinuria is documented as a concurrent condition influencing management of the labor. Typical codes: O13.3, O13.4

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

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.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Explore openpayer tools

View all tools

When to Use

ICD-10-CM Codes

6 rows

ICD-10-CM Code	Description
O13.1	Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
O13.2	Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester
O13.3	Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester
O13.4	Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
O13.5	Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium
O13.9	Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

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

Pregnant patient in the third trimester presents to the obstetric triage unit with new-onset elevated blood pressures measured repeatedly above 140/90 mm Hg without protein on urinalysis. She reports mild headache and swelling of the hands but urine dipstick and spot protein/creatinine ratio are negative for significant proteinuria, so a pregnancy-induced hypertension diagnosis without significant proteinuria is assigned. Typical codes: O13.1, O13.9
Woman at 28 weeks gestation seen in prenatal clinic for routine follow-up with persistent systolic readings in the 150s and diastolic in the 90s over several visits, no history of chronic hypertension and no proteinuria detected on laboratory testing; management is outpatient blood pressure monitoring and adjustment of activity. Because hypertension developed during pregnancy without significant protein loss, this is coded as gestational hypertension without significant proteinuria. Typical codes: O13.2
Pregnant patient admitted for evaluation of new generalized edema and elevated blood pressure discovered incidentally on admission for preterm labor; repeated blood pressures confirm hypertension but serial urines and a 24-hour urine collection show protein excretion below thresholds for preeclampsia, so the hypertensive disorder without significant proteinuria is documented as a concurrent condition influencing management of the labor. Typical codes: O13.3, O13.4

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

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 Hypertension Without Significant Proteinuria: Group Overview

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

ICD-10-CM O13: Gestational [pregnancy-induced] Hypertension Without Significant Proteinuria Overview

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

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

ICD-10-CM O13: Gestational [pregnancy-induced] Hypertension Without Significant Proteinuria 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 Hypertension Without Significant Proteinuria: Group Overview

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

ICD-10-CM O13: Gestational [pregnancy-induced] Hypertension Without Significant Proteinuria Overview

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

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

ICD-10-CM O13: Gestational [pregnancy-induced] Hypertension Without Significant Proteinuria Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in ICD-10-CM code group `O13`?

How do the specific codes in the `O13` group capture timing or context?

Why is accurate coding within `O13` important for reimbursement and documentation?

Which DRGs are related to diagnoses in the `O13` group?

What clinical threshold differentiates `O13` diagnoses from preeclampsia according to the overview?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in ICD-10-CM code group `O13`?

How do the specific codes in the `O13` group capture timing or context?

Why is accurate coding within `O13` important for reimbursement and documentation?

Which DRGs are related to diagnoses in the `O13` group?

What clinical threshold differentiates `O13` diagnoses from preeclampsia according to the overview?

References