ICD-10-CM
ICD-10 code for Syndrome dorsolateral medullary: G46.4
The ICD-10-CM index points "Syndrome dorsolateral medullary" to G46.4, Cerebellar stroke syndrome. G46.4 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in G46
A header groups codes and is not billed. A billable code is one you can report.
- G46Vascular syndromes of brain in cerebrovascular diseasesHeader
- G46.0Middle cerebral artery syndromeBillable
- G46.1Anterior cerebral artery syndromeBillable
- G46.2Posterior cerebral artery syndromeBillable
- G46.3Brain stem stroke syndromeBillable
- G46.4Cerebellar stroke syndromeBillable
- G46.5Pure motor lacunar syndromeBillable
- G46.6Pure sensory lacunar syndromeBillable
- G46.7Other lacunar syndromesBillable
- G46.8Other vascular syndromes of brain in cerebrovascular diseasesBillable
Code first
The CDC tabular list says to report the code named here before this one.
From G46. A note on a category applies to every code under it.
Code first underlying cerebrovascular disease (I60-I69)
Related conditions
Related pages
- G46.4 code detailsNotes, nearby codes, CMS-HCC group
- Category G46Every code under it
- Chapter 6Diseases of the nervous system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Syndrome dorsolateral medullary?
The ICD-10-CM index points "Syndrome dorsolateral medullary" to G46.4, Cerebellar stroke syndrome. G46.4 is a billable code.
Is G46.4 billable?
Yes. G46.4 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is G46.4 in?
Chapter 6. Diseases of the nervous system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.