ICD-10-CM E52 is the diagnosis code for Niacin deficiency [pellagra]. This code falls under the section "Other nutritional deficiencies" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as E52. They are mutually exclusive:
Understanding where E52 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, E52 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
E52 is the ICD-10-CM diagnosis code for "Niacin deficiency [pellagra]". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
E52 is located in Section E50-E64 — "Other nutritional deficiencies" within Chapter 4 of the ICD-10-CM Tabular List.
Use E52 when the patients documented diagnosis matches "Niacin deficiency [pellagra]" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Niacin deficiency [pellagra] is E52.
Yes, E52 can be used as a primary diagnosis code since it is billable and specific.
E52 is in Chapter 4 of the ICD-10-CM Tabular List.
Type 1 Excludes for E52 include: sequelae of niacin deficiency (E64.8).
Yes, E52 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.