ICD-10 code for Neuromyelitis

The ICD-10-CM code for Neuromyelitis is G36.9 (Acute disseminated demyelination, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on G36.9.

Within G36, choose G36.9 (Acute disseminated demyelination, unspecified) only when documentation doesn't support a more specific option: Neuromyelitis optica [Devic] (G36.0), acute and subacute hemorrhagic leukoencephalitis [Hurst] (G36.1) and other specified acute disseminated demyelination (G36.8).

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.

In MS-DRG v44.0, it is part of the grouping logic for DRG 058 (Multiple Sclerosis and Cerebellar Ataxia with MCC, relative weight 1.8438), DRG 059 (Multiple Sclerosis and Cerebellar Ataxia with CC, relative weight 1.2002), DRG 060 (Multiple Sclerosis and Cerebellar Ataxia without CC/MCC, relative weight 0.9247), DRG 974 (HIV with Major Related Condition with MCC, relative weight 3.0506), DRG 975 (HIV with Major Related Condition with CC, relative weight 1.3252) and DRG 976 (HIV with Major Related Condition without CC/MCC, relative weight 0.8124), in MDC 01 (Diseases and Disorders of the Nervous System) and MDC 25 (Human Immunodeficiency Virus Infections), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.