Is ICD-10-CM code E56 billable?

No, E56 (Other vitamin deficiencies) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code E56 belong to?

E56 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E56Non-billable

Other vitamin deficiencies

Endocrine, Nutritional and Metabolic Diseases·Other nutritional deficiencies (E50-E64)·category·FY 2026

Use a more specific code (4 billable)

E56.0Deficiency of vitamin E E56.1Deficiency of vitamin K E56.8Deficiency of other vitamins E56.9Vitamin deficiency, unspecified

CH4 Parent Instructions

Excludes1(Not coded here. Use a different code.)

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

E50-E64 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

nutritional anemias (D50-D53)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

sequelae of other vitamin deficiencies (E64.8)

Clinical Hierarchy

BillableHas subcodes

CH4Endocrine, nutritional and metabolic diseases (E00-E89)

E50-E64Other nutritional deficiencies (E50-E64)

E56Other vitamin deficienciesNot billable

E56.0Deficiency of vitamin EBillable

E56.1Deficiency of vitamin KBillable

E56.8Deficiency of other vitaminsBillable

E56.9Vitamin deficiency, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.