G37.81 — Myelin oligodendrocyte glycoprotein antibody disease
Is G37.81 billable?
Yes — G37.81 is billable for FY2027. G37.81 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. G37.81 may be submitted for encounters from October 1, 2026 through September 30, 2027.
G37.81 at a glance
| Code | G37.81 |
|---|---|
| Description | Myelin oligodendrocyte glycoprotein antibody disease |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does G37.81 group to?
G37.81 sits in MDC 01 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 058Multiple Sclerosis and Cerebellar Ataxia with MCCmedical
- 059Multiple Sclerosis and Cerebellar Ataxia with CCmedical
- 060Multiple Sclerosis and Cerebellar Ataxia without CC/MCCmedical
As a secondary diagnosis, G37.81 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is G37.81 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to G37.81. They show the wording a clinician may have documented, which often differs from the Tabular description.
- MOGAD (myelin oligodendrocyte glycoprotein antibody disease)
- Disease, diseased › MOG antibody
- Disease, diseased › myelin oligodendrocyte glycoprotein antibody
Code also
Two codes may be needed to describe the condition fully. Whether G37.81 is sequenced first depends on the reason for the encounter.
Inclusion terms
Alternative wording in documentation that is classified to G37.81.
- MOG antibody disease
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G37.81, but a patient may have both at the same time. When documentation supports it, G37.81 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
How long has G37.81 existed?
G37.81 first appears in FY2024.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.