ICD-10-CM 2027
ICD-10 code for optic neuritis in myelitis
From the official ICD-10-CM alphabetic index entry “Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) › optic neuritis in”. Page updated September 29, 2026.
About coding optic neuritis in myelitis
The ICD-10-CM code for optic neuritis in myelitis is G36.0 (Neuromyelitis optica [Devic]).
Within G36 (other acute disseminated demyelination), G36.0 is specifically for Neuromyelitis optica [Devic]. Related codes cover acute and subacute hemorrhagic leukoencephalitis [Hurst] (G36.1), other specified acute disseminated demyelination (G36.8) and acute disseminated demyelination, unspecified (G36.9).
The conditions in its Excludes2 note aren't part of G36.0, but may be coded alongside it if the patient has both: optic neuritis NOS (H46).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about optic neuritis in myelitis ICD-10 codes
What is the ICD-10 code for optic neuritis in myelitis?
- G36.0 — Neuromyelitis optica [Devic].
Is G36.0 billable?
- Yes. G36.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G36.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G36.0 as a principal diagnosis.
Is G36.0 a CC or MCC?
- G36.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.