E56

Other vitamin deficiencies

FY2027Chapter 4: Endocrine, nutritional and metabolic diseases/E50–E64 Other nutritional deficiencies

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

E56 is a non-billable ICD-10-CM code category for other vitamin deficiencies. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are E56.0 Deficiency of vitamin E; E56.1 Deficiency of vitamin K; E56.8 Deficiency of other vitamins and E56.9 Vitamin deficiency, unspecified. Its coding notes include 2 Excludes1 entries and 1 Excludes2 entry.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • sequelae of other vitamin deficiencies (E64.8)
Also from chapter/block level (1 note)
Inherited from Chapter 4 Endocrine, nutritional and metabolic diseases
  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (1 note)
Inherited from E50–E64 Other nutritional deficiencies

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 4 Endocrine, nutritional and metabolic diseases
  • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

More specific codes under E56 4