G37.1
G37.1: Central demyelination of corpus callosum
Billable / specific codeICD-10-CM
G37.1 is a billable, specific ICD-10-CM code for central demyelination of corpus callosum. It is valid for submission on a claim.
Check G37.1 with the rest of the claim: free scrubberRisk adjustment
G37.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 198 Multiple Sclerosis0.647 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
G37.1 is named in 15 Medicare coverage policies: 15 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A53052Billing and Coding: Home Health Speech-Language Pathology
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A54969Billing and Coding: Nerve Conduction Studies and Electromyography
- A56551Billing and Coding: Visual Fields Testing
Alphabetic index entries that lead here
- Marchiafava syndrome or disease(-Bignami)
- Demyelination, demyelinization›corpus callosum(central)
- Encephalopathy›demyelinating callosal
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under G37
- G37.0Diffuse sclerosis of central nervous system
- G37.2Central pontine myelinolysis
- G37.3Acute transverse myelitis in demyelinating disease of central nervous system
- G37.4Subacute necrotizing myelitis of central nervous system
- G37.5Concentric sclerosis [Balo] of central nervous system
- G37.8Other specified demyelinating diseases of central nervous system
- G37.9Demyelinating disease of central nervous system, unspecified