G09
✓ Billable
Sequelae of inflammatory diseases of central nervous system
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G09
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Nervous System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Code first
- condition resulting from (sequela) of inflammatory diseases of central nervous system
Note
- Category G09 is to be used to indicate conditions whose primary classification is to G00-G08 as the cause of sequelae, themselves classifiable elsewhere. The 'sequelae' include conditions specified as residuals.
Frequently asked questions
What is ICD-10 code G09?
ICD-10-CM code G09 represents Sequelae of inflammatory diseases of central nervous system. It is a billable diagnosis code in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G09 billable?
Yes. G09 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is G09 in?
G09 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
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