G32.0Subacute combined degeneration of spinal cord in diseases classified elsewhere

G32.0 is the ICD-10-CM diagnosis code for subacute combined degeneration of spinal cord in diseases classified elsewhere. It belongs to category G32 (other degenerative disorders of nervous system in diseases classified elsewhere), block G30-G32 (other degenerative diseases of the 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 G32 (other degenerative disorders of nervous system in diseases classified elsewhere), G32.0 is specifically for subacute combined degeneration of spinal cord in diseases classified elsewhere. Related codes cover other specified degenerative disorders of nervous system in diseases classified elsewhere (G32.8).

Don't report G32.0 together with the conditions in its Excludes1 note: syphilitic combined degeneration of spinal cord (A52.11).

Code first underlying disease, such as: other dietary vitamin B12 deficiency anemia (D51.3), vitamin B12 deficiency anemia due to intrinsic factor deficiency (D51.0), vitamin B12 deficiency anemia, unspecified (D51.8) and vitamin B12 deficiency (E53.8).

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 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), 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 is a manifestation code, so it describes the effect of an underlying disease and can't be the principal diagnosis. Code the underlying condition first.

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 336.2 (subacute combined degeneration of spinal cord in diseases classified elsewhere).