U.S. ICD-10-CM · FY 2027

E52 ICD-10-CM Code: Niacin deficiency [pellagra]

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

E52

Niacin deficiency [pellagra]

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where E52 sits

  1. 1

    Chapter 4

    Endocrine, nutritional and metabolic diseases (E00-E89)

  2. 2

    Section

    Other nutritional deficiencies (E50-E64)

  3. 3

    Category E52

    Niacin deficiency [pellagra]

  4. 4

    Code E52

    Niacin deficiency [pellagra]

Documentation details

Notes for this code

Inclusion terms

  • Niacin (-tryptophan) deficiency
  • Nicotinamide deficiency
  • Pellagra (alcoholic)

Code first

No “code first” instruction is listed for E52.

Use additional code

No “use additional code” instruction is listed for E52.

Excludes1

Conditions that should not be reported together with this code.

  • sequelae of niacin deficiency (E64.8)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for E52.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code E52 mean?

E52 is the FY 2027 U.S. ICD-10-CM code for “Niacin deficiency [pellagra].”

Is E52 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, E52 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is E52 located in ICD-10-CM?

E52 is listed in Chapter 4, Endocrine, nutritional and metabolic diseases (E00-E89), within Other nutritional deficiencies (E50-E64) (E50–E64), under category E52, Niacin deficiency [pellagra].

What coding notes are listed for E52?

Its listed inclusion terms are Niacin (-tryptophan) deficiency; Nicotinamide deficiency; Pellagra (alcoholic). No code-first instruction is listed. Excludes1 notes: sequelae of niacin deficiency (E64.8). No Excludes2 note is listed.

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