MCMedicalCodingSoftware
G37.81

G37.81: Myelin oligodendrocyte glycoprotein antibody disease

Billable / specific codeICD-10-CM

G37.81 is a billable, specific ICD-10-CM code for myelin oligodendrocyte glycoprotein antibody disease. It is valid for submission on a claim.

Check G37.81 with the rest of the claim: free scrubber

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

  • associated manifestations, if known, such as:
  • noninfectious acute disseminated encephalomyelitis (G04.81)
  • neuromyelitis optica (G36.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • MOG antibody disease

Risk adjustment

G37.81 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

G37.81 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56612Billing and Coding: CT of the Head
  • A56619Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
  • A56799Billing and Coding: Visual Fields Testing

Alphabetic index entries that lead here

  • MOGAD(myelin oligodendrocyte glycoprotein antibody disease)
  • Disease, diseased›MOG antibody
  • Disease, diseased›myelin oligodendrocyte glycoprotein antibody

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G37.8

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.