O13.9 — Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester

O13.9

ICD-10 Chapter 15: Pregnancy, Childbirth & Puerperium — illustrative image — Chapter 15: Pregnancy, childbirth and the puerperium (O00–O9A) — illustrative image

What this code means

Gestational hypertension is new high blood pressure arising in pregnancy without significant protein in the urine; trimester unspecified.

Also called: gestational hypertension, pregnancy induced hypertension.

When this code is used

Used for gestational (pregnancy-induced) hypertension without significant proteinuria, unspecified trimester.

Where it sits in ICD-10-CM

Code O13.9 belongs to Chapter 15: Pregnancy, childbirth and the puerperium, which covers codes O00–O9A in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Learn more about this condition

Condition guide: Pregnancy

Watch: related videos

▶ WatchGestational hypertension and preeclampsia

Frequently asked questions

What is ICD-10-CM code O13.9?

O13.9 is the ICD-10-CM diagnosis code for “Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester”. Gestational hypertension is new high blood pressure arising in pregnancy without significant protein in the urine; trimester unspecified.

When is code O13.9 used?

Used for gestational (pregnancy-induced) hypertension without significant proteinuria, unspecified trimester. It belongs to Chapter 15 of ICD-10-CM (Pregnancy, childbirth and the puerperium).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.