G46.4 – Cerebellar stroke syndrome

ICD-10-CM 2027 diagnosis code · Episodic and paroxysmal disorders

Billable code

ICD-10-CM code G46.4

Code: G46.4 (claims format: G464)
Description: Cerebellar stroke syndrome
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 6. Diseases of the nervous system (G00-G99)
Block: G40-G47 Episodic and paroxysmal disorders
Parent codes: G46

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

G46 – Vascular syndromes of brain in cerebrovascular diseases

Code first:

underlying cerebrovascular disease (I60-I69)

Index terms for G46.4

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in G46

G46.0 – Middle cerebral artery syndromeBillable
G46.1 – Anterior cerebral artery syndromeBillable
G46.2 – Posterior cerebral artery syndromeBillable
G46.3 – Brain stem stroke syndromeBillable
G46.5 – Pure motor lacunar syndromeBillable
G46.6 – Pure sensory lacunar syndromeBillable
G46.7 – Other lacunar syndromesBillable
G46.8 – Other vascular syndromes of brain in cerebrovascular diseasesBillable

Frequently asked questions

What is ICD-10 code G46.4?

G46.4 is the ICD-10-CM code for cerebellar stroke syndrome, in the block G40-G47 (Episodic and paroxysmal disorders).

Is G46.4 a billable code?

Yes. G46.4 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does G46.4 belong to?

It belongs to category G46 – Vascular syndromes of brain in cerebrovascular diseases.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.