G31.82: Leigh's disease
G31.82 is a billable, specific ICD-10-CM code for leigh's disease. It is valid for submission on a claim.
Check G31.82 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Subacute necrotizing encephalopathy
Other codes that can never be billed with G31.82
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
G31.82 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 127 Dementia, Mild or Unspecified0.341 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
G31.82 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56612Billing and Coding: CT of the Head
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
Alphabetic index entries that lead here
- Leigh's disease
- Encephalopathy›necrotizing, subacute(Leigh)
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under G31.8
- G31.80Leukodystrophy, unspecified
- G31.81Alpers disease
- G31.83Neurocognitive disorder with Lewy bodies
- G31.84Mild cognitive impairment of uncertain or unknown etiology
- G31.85Corticobasal degeneration
- G31.86Alexander disease
- G31.87Primary progressive apraxia of speech
- G31.89Other specified degenerative diseases of nervous system