MCMedicalCodingSoftware
E46

E46: Unspecified protein-calorie malnutrition

Billable / specific codeICD-10-CM

E46 is a billable, specific ICD-10-CM code for unspecified protein-calorie malnutrition. It is valid for submission on a claim.

Check E46 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • nutritional deficiency NOS (E63.9)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Malnutrition NOS
  • Protein-calorie imbalance NOS

Other codes that can never be billed with E46

Their own Excludes1 notes name this code, so the conflict is not listed above.

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E46 is named in 13 Medicare coverage policies: 13 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56232Billing and Coding: Foot Care
  • A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
  • A56416Billing and Coding: Assays for Vitamins and Metabolic Function
  • A56680Billing and Coding: Routine Foot Care

Alphabetic index entries that lead here

  • Calorie deficiency or malnutrition
  • Malnutrition
  • Cataract›malnutrition-dehydration
  • Deficiency, deficient›protein
  • Malnutrition›protein
  • Cataract›in›malnutrition-dehydration
  • Malnutrition›protein›calorie
  • Malnutrition›protein›energy

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.