2026 ICD-10-CM Diagnosis Code O12Gestational [pregnancy-induced] edema and proteinuria without hypertension

ICD-10-CM Codes›O00-O9A›O10-O16›O12

ICD-10-CM O12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O12 is a non-billable ICD-10-CM category code for gestational [pregnancy-induced] edema and proteinuria without hypertension, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O12.00, O12.01, O12.02, and O12.03.

Code Identity

ICD-10-CM Code
O12
Billable Status
No — Non-Billable Category
Code Describes
Gestational [pregnancy-induced] edema and proteinuria without hypertension
Chapter
O10-O16
Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO10-O16Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
CategoryO12Gestational [pregnancy-induced] edema and proteinuria without hypertension
This CodeO12Gestational [pregnancy-induced] edema and proteinuria without hypertension

Specific Coding for Gestational edema and proteinuria without hypertensionOverview

Non-specific codes like O12 require more characters. Use one of these billable codes instead:

  • O12.0 for Gestational edema

  • Use O12.00 for Gestational edema, unspecified trimester

  • Use O12.01 for Gestational edema, first trimester

  • Use O12.02 for Gestational edema, second trimester

  • Use O12.03 for Gestational edema, third trimester

  • Use O12.04 for Gestational edema, complicating childbirth

  • Use O12.05 for Gestational edema, complicating the puerperium

  • O12.1 for Gestational proteinuria

  • Use O12.10 for Gestational proteinuria, unspecified trimester

  • Use O12.11 for Gestational proteinuria, first trimester

  • Use O12.12 for Gestational proteinuria, second trimester

  • Use O12.13 for Gestational proteinuria, third trimester

  • Use O12.14 for Gestational proteinuria, complicating childbirth

  • Use O12.15 for Gestational proteinuria, complicating the puerperium

  • O12.2 for Gestational edema with proteinuria

  • Use O12.20 for Gestational edema with proteinuria, unspecified trimester

  • Use O12.21 for Gestational edema with proteinuria, first trimester

  • Use O12.22 for Gestational edema with proteinuria, second trimester

  • Use O12.23 for Gestational edema with proteinuria, third trimester

  • Use O12.24 for Gestational edema with proteinuria, complicating childbirth

  • Use O12.25 for Gestational edema with proteinuria, complicating the puerperium

Patient EducationClinical

Edema

Edema means swelling caused by fluid in your body's tissues. It usually occurs in the feet, ankles and legs, but it can involve your entire body.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About O12Overview

Is O12 a billable code?

No. This is a category header that groups the codes for gestational [pregnancy-induced] edema and proteinuria without hypertension, and headers cannot be submitted on claims. Claims for gestational [pregnancy-induced] edema and proteinuria without hypertension need a more specific code from this category, such as O12.00, O12.01, and O12.02.