G46 – Vascular syndromes of brain in cerebrovascular diseases
ICD-10-CM 2027 diagnosis code · Episodic and paroxysmal disorders
ICD-10-CM code
G46
- Code
G46(claims format:G46)- Description
- Vascular syndromes of brain in cerebrovascular diseases
- Billable
- No – use a more specific code below
- 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
Billable codes under G46
G46 is a header code and cannot be used on claims. Choose the most specific code:
- G46.0 – Middle cerebral artery syndromeBillable
- G46.1 – Anterior cerebral artery syndromeBillable
- G46.2 – Posterior cerebral artery syndromeBillable
- G46.3 – Brain stem stroke syndromeBillable
- G46.4 – Cerebellar 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
Notes for G46
Frequently asked questions
What is ICD-10 code G46?
G46 is the ICD-10-CM code for vascular syndromes of brain in cerebrovascular diseases, in the block G40-G47 (Episodic and paroxysmal disorders).
Is G46 a billable code?
No. G46 is a header code with more specific child codes; report one of the billable codes listed above.
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.