ICD-10-CM · Chapter 4 · E00-E89
E46 Unspecified protein-calorie malnutrition
Includes
- Malnutrition NOS
- Protein-calorie imbalance NOS
Excludes 1 (cannot be coded together)
- nutritional deficiency NOS (E63.9)
This category is a complete, billable diagnosis code.
No additional specificity is required — submit E46 directly on claims and documentation without a subcode extension.
Last reviewed: September 2026