G93.4
⚠ Non-billable (Header)Other and unspecified encephalopathy
Diseases of the nervous system (G00-G99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
directMay be coded together if both conditions coexist
- • alcoholic encephalopathy (G31.2)
- • encephalopathy in diseases classified elsewhere (G94)
- • hypertensive encephalopathy (I67.4)
- • toxic (metabolic) encephalopathy (G92.8)
Child Codes (7)
G93.40Encephalopathy, unspecifiedG93.41Metabolic encephalopathyG93.42Megalencephalic leukoencephalopathy with subcortical cystsG93.43Leukoencephalopathy with calcifications and cystsG93.44Adult-onset leukodystrophy with axonal spheroidsG93.45Developmental and epileptic encephalopathyG93.49Other encephalopathy
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CodeG93.4
BillableNo — Header code
ParentG93
CategoryDiseases of the nervous system (G00-G99)
Excludes10 rule(s)
Excludes24 note(s)
Child codes7
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)