ICD-10-CM · Chapter 4 · E00-E89
E52 Niacin deficiency [pellagra]
Includes
- Niacin (-tryptophan) deficiency
- Nicotinamide deficiency
- Pellagra (alcoholic)
Excludes 1 (cannot be coded together)
- sequelae of niacin deficiency (E64.8)
This category is a complete, billable diagnosis code.
No additional specificity is required — submit E52 directly on claims and documentation without a subcode extension.
Last reviewed: September 2026