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Free Medical Coding > ICD10 CM > 2025 ICD-10-CM Codes > 2025 ICD-10-CM Codes E00-E89 – Endocrine, nutritional and metabolic diseases (E00-E89) > 2025 ICD-10-CM Codes E50-E64 – Other nutritional deficiencies (E50-E64) > 2025 ICD-10-CM Codes E56 – Other vitamin deficiencies (E56) > 2025 ICD-10-CM Diagnosis Code E56.9 – Vitamin deficiency, unspecified (E56.9)

2025 ICD-10-CM Diagnosis Code E56.9 – Vitamin deficiency, unspecified (E56.9)

2016201720182019202020212022202320242025Billable/Specific Code
  • E56.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM E56.9 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of E56.9 – other international versions of ICD-10 E56.9 may differ.

ICD-10-CM E56.9 is grouped within Diagnostic Related Group(s):

  • 640 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc
  • 641 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes without mcc

Code History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2016 (effective 10/1/2015): No change
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to E56.9:

  • vitamin NOS (multiple) > Deficiency, deficient
  • lack of vitamin > in (due to) (with) P11.1
  • due to lack of vitamin NEC > Polyneuritis, polyneuritic
  • avitaminosis NEC > in (due to) G62.1
  • lack of vitamin NEC > in (due to) G62.1

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