2026 ICD-10-CM Diagnosis Code E56Other vitamin deficiencies

ICD-10-CM Codes›E00–E89›E50-E64›E56

ICD-10-CM E56
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E56 is a non-billable ICD-10-CM category code for other vitamin deficiencies, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E56.0, E56.1, E56.8, and E56.9.

Code Identity

ICD-10-CM Code
E56
Billable Status
No — Non-Billable Category
Code Describes
Other vitamin deficiencies
Chapter
E50-E64
Other nutritional deficiencies

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE50-E64Other nutritional deficiencies
CategoryE56Other vitamin deficiencies
This CodeE56Other vitamin deficiencies

Specific Coding for Other vitamin deficienciesOverview

Non-specific codes like E56 require more characters. Use one of these billable codes instead:

  • Use E56.0 for Deficiency of vitamin E

  • Use E56.1 for Deficiency of vitamin K

  • Use E56.8 for Deficiency of other vitamins

  • Use E56.9 for Vitamin deficiency, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • sequelae of other vitamin deficiencies E64.8

Patient EducationClinical

Malnutrition

Malnutrition means that your body isn't getting enough calories or the right balance of nutrients to stay healthy. This can happen if you don't get enough protein, carbohydrates, and fats, eat too much unhealthy food, or don't get the vitamins and minerals your body needs.

The full article covers:

  • What is malnutrition?
  • What are the types of malnutrition?
  • What causes malnutrition?
  • Who is at risk for developing malnutrition?
  • What are the symptoms of malnutrition?
  • How is malnutrition diagnosed?
  • What are the treatments for malnutrition?
  • Can malnutrition be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E56Overview

Is E56 (Other vitamin deficiencies) a billable code?

No. This is a category header that groups the codes for other vitamin deficiencies, and headers cannot be submitted on claims. Claims for other vitamin deficiencies need a more specific code from this category, such as E56.0, E56.1, and E56.8.