G37.2Central pontine myelinolysis

G37.2 is the ICD-10-CM diagnosis code for central pontine myelinolysis. It belongs to category G37 (other demyelinating diseases of central nervous system), block G35-G37 (demyelinating diseases of the central nervous system) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G37 (other demyelinating diseases of central nervous system), G37.2 is specifically for central pontine myelinolysis. Related codes cover diffuse sclerosis of central nervous system (G37.0), central demyelination of corpus callosum (G37.1), acute transverse myelitis in demyelinating disease of central nervous system (G37.3), subacute necrotizing myelitis of central nervous system (G37.4), Concentric sclerosis [Balo] of central nervous system (G37.5), other specified demyelinating diseases of central nervous system (G37.8) and demyelinating disease of central nervous system, unspecified (G37.9).

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) and DRG 060 (Multiple Sclerosis and Cerebellar Ataxia without CC/MCC, relative weight 0.9247), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 341.8 (other demyelinating diseases of central nervous system).