ICD-10-CM > E00-E89 > E50-E64 > E52 E52 Niacin deficiency [pellagra] Billable/Specific Copy Code Copy Description Applicable To Niacin (-tryptophan) deficiencyNicotinamide deficiencyPellagra (alcoholic) Type 1 Excludes sequelae of niacin deficiency (E64.8)
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