U.S. ICD-10-CM · FY 2027

G46 ICD-10-CM Code: Vascular syndromes of brain in cerebrovascular diseases

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

Code definition

Official description

G46

Vascular syndromes of brain in cerebrovascular diseases

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

Classification

Where G46 sits

  1. 1

    Chapter 6

    Diseases of the nervous system (G00-G99)

  2. 2

    Section

    Episodic and paroxysmal disorders (G40-G47)

  3. 3

    Category G46

    Vascular syndromes of brain in cerebrovascular diseases

  4. 4

    Code G46

    Vascular syndromes of brain in cerebrovascular diseases

More specific choices

Codes under G46

G46 is a non-billable category. Choose the child code that best matches the documented diagnosis.

G46.0

Middle cerebral artery syndrome

G46.1

Anterior cerebral artery syndrome

G46.2

Posterior cerebral artery syndrome

G46.3

Brain stem stroke syndrome

G46.4

Cerebellar stroke syndrome

G46.5

Pure motor lacunar syndrome

G46.6

Pure sensory lacunar syndrome

G46.7

Other lacunar syndromes

G46.8

Other vascular syndromes of brain in cerebrovascular diseases

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for G46.

Code first

  • underlying cerebrovascular disease (I60-I69)

Use additional code

No “use additional code” instruction is listed for G46.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for G46.

Excludes2

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

No Excludes2 note is listed for G46.

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 G46 mean?

G46 is the FY 2027 U.S. ICD-10-CM code for “Vascular syndromes of brain in cerebrovascular diseases.”

Is G46 a billable or specific ICD-10-CM code?

No. G46 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 G46 located in ICD-10-CM?

G46 is listed in Chapter 6, Diseases of the nervous system (G00-G99), within Episodic and paroxysmal disorders (G40-G47) (G40–G47), under category G46, Vascular syndromes of brain in cerebrovascular diseases.

What coding notes are listed for G46?

No inclusion terms are listed for G46 in this reference record. Code-first instructions: underlying cerebrovascular disease (I60-I69). No Excludes1 note is listed. No Excludes2 note is listed.

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