U.S. ICD-10-CM · FY 2027

O13 ICD-10-CM Code: Gestational [pregnancy-induced] hypertension without significant proteinuria

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

O13

Gestational [pregnancy-induced] hypertension without significant proteinuria

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where O13 sits

  1. 1

    Chapter 15

    Pregnancy, childbirth and the puerperium (O00-O9A)

  2. 2

    Section

    Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)

  3. 3

    Category O13

    Gestational [pregnancy-induced] hypertension without significant proteinuria

  4. 4

    Code O13

    Gestational [pregnancy-induced] hypertension without significant proteinuria

More specific choices

Codes under O13

O13 is a non-billable category. Choose the child code that best matches the documented diagnosis.

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

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for O13.

Code first

No “code first” instruction is listed for O13.

Use additional code

No “use additional code” instruction is listed for O13.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for O13.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for O13.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code O13 mean?

O13 is the FY 2027 U.S. ICD-10-CM code for “Gestational [pregnancy-induced] hypertension without significant proteinuria.”

Is O13 a billable or specific ICD-10-CM code?

No. O13 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is O13 located in ICD-10-CM?

O13 is listed in Chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A), within Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16) (O10–O16), under category O13, Gestational [pregnancy-induced] hypertension without significant proteinuria.

What coding notes are listed for O13?

No inclusion terms are listed for O13 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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