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ICD-10-CM 2027 diagnosis code

E51.1Beriberi

Not billable — use a more specific code

E51.1 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About E51.1

E51.1 is the ICD-10-CM diagnosis code for beriberi. It belongs to category E51 (thiamine deficiency), block E50-E64 (other nutritional deficiencies) and chapter 4 (endocrine, nutritional and metabolic diseases). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within E51 (thiamine deficiency), E51.1 is specifically for beriberi. Related codes cover Wernicke's encephalopathy (E51.2), other manifestations of thiamine deficiency (E51.8) and unspecified (E51.9).

To report this condition, pick the subcode that matches the documentation: E51.11 (beriberi) and E51.12 (beriberi).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under E51.1

Notes that apply from higher levels

Instructions written at a parent level also apply to E51.1.

› From E51 Thiamine deficiency
Excludes1
  • sequelae of thiamine deficiency (E64.8)

Broader instructions also apply from E50-E64 Other nutritional deficiencies and Chapter 4: Endocrine, nutritional and metabolic diseases.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about E51.1

Is E51.1 billable?

No. E51.1 is a header code. Report one of its more specific subcodes instead.