G13
⚠ Non-billable
Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G13
System
ICD-10-CM
Billable
No — use specific code
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 G13?
ICD-10-CM code G13 represents Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G13 billable?
No. G13 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is G13 in?
G13 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
Related codes in the G13 category
G13.0
Paraneoplastic neuromyopathy and neuropathy
Billable
G13.1
Other systemic atrophy primarily affecting central nervous system in neoplastic disease
Billable
G13.2
Systemic atrophy primarily affecting the central nervous system in myxedema
Billable
G13.8
Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere
Billable
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