G93.42
✓ Billable
Megalencephalic leukoencephalopathy with subcortical cysts
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G93.42
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.
Frequently asked questions
What is ICD-10 code G93.42?
ICD-10-CM code G93.42 represents Megalencephalic leukoencephalopathy with subcortical cysts. It is a billable diagnosis code in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G93.42 billable?
Yes. G93.42 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is G93.42 in?
G93.42 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
Related codes in the G93 category
G93
Other disorders of brain
Non-billable
G93.0
Cerebral cysts
Billable
G93.1
Anoxic brain damage, not elsewhere classified
Billable
G93.2
Benign intracranial hypertension
Billable
G93.3
Postviral and related fatigue syndromes
Non-billable
G93.4
Other and unspecified encephalopathy
Non-billable
G93.5
Compression of brain
Billable
G93.6
Cerebral edema
Billable
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