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

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Dana-Putnam syndrome
• Sclerosis of spinal cord (combined) (dorsolateral) (posterolateral)

Excludes1 (never code together)

• 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)
• vitamin B12 deficiency (E53.8)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 182 — Spinal Cord Disorders/Injuries
• CMS-HCC V22: HCC 72 — Spinal Cord Disorders/Injuries
• RxHCC V08: HCC 155 — Spinal Cord Disorders
• ESRD V24: HCC 72

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 336.2 Subacute combined degeneration of spinal cord in diseases classified elsewhere

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Diagnosis Index entries for G32.0

• Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › combined system disease NEC
• Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › combined system disease NEC › due to dietary vitamin B12 deficiency
• Degeneration, degenerative › combined (spinal cord) (subacute)
• Degeneration, degenerative › combined (spinal cord) (subacute) › with anemia (pernicious)
• Degeneration, degenerative › combined (spinal cord) (subacute) › with anemia (pernicious) › due to dietary vitamin B12 deficiency
• Degeneration, degenerative › combined (spinal cord) (subacute) › in (due to) › vitamin B12 deficiency
• Degeneration, degenerative › combined (spinal cord) (subacute) › in (due to) › vitamin B12 deficiency › anemia
• Myelopathy (spinal cord) › vitamin B12

Nearby codes

• G32 Other degenerative disorders of nervous system in diseases classified elsewhere
• G32.0 Subacute combined degeneration of spinal cord in diseases classified elsewhere (this code)
• G32.8 Other specified degenerative disorders of nervous system in diseases classified elsewhere
• G32.81 Cerebellar ataxia in diseases classified elsewhere
• G32.89 Other specified degenerative disorders of nervous system in diseases classified elsewhere