O13
ICD-10Non-billable categoryGestational hypertension without significant proteinuria
Official ICD-10-CM descriptor (FY2026)
Gestational [pregnancy-induced] hypertension without significant proteinuria
O13 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- gestational hypertension NOS
- transient hypertension of pregnancy
More specific codes under O13
- O13.1Gestational htn w/o significant proteinuria, first trimester
- O13.2Gestatnl htn w/o significant proteinuria, second trimester
- O13.3Gestational htn w/o significant proteinuria, third trimester
- O13.4Gestatnl htn without significant protein, comp childbirth
- O13.5Gestatnl htn without significant protein, comp the puerp
- O13.9Gestational htn w/o significant proteinuria, unsp trimester
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.