G37.81 — Myelin oligodendrocyte glycoprotein antibody disease
G37.81 is a billable, specific ICD-10-CM code for myelin oligodendrocyte glycoprotein antibody disease. It is valid for submission on a claim.
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
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.
Medicare coverage
G37.81 is named in 9 Medicare coverage policies — 9 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56612Billing and Coding: CT of the Head
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
- A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
- A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
How G37.81 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G37.81.
- MOGAD(myelin oligodendrocyte glycoprotein antibody disease)
- Disease, diseased›MOG antibody
- Disease, diseased›myelin oligodendrocyte glycoprotein antibody
Related codes at this level
Codes that share G37.8. If G37.81 is not quite right, the correct code is usually one of these.
Questions about G37.81
- Is G37.81 a billable ICD-10-CM code?
- Yes. G37.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G37.81 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Demyelinating diseases of the central nervous system (G35-G37).