E52 ICD-10-CA code: Niacin deficiency [pellagra]
E52 is the ICD-10-CA code for “Niacin deficiency [pellagra]” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
E52Niacin deficiency [pellagra]
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to E52. Searching the index by the condition the note names is how coders reach this code.
- Pellagra (alcoholic)
- Syndrome, pellagroid
- Dermatitis, pellagrous
- Niacin(amide) deficiency
- Nicotinic acid deficiency
- Acid, deficiency, nicotinic
- Erythema, erythematous, endemic
- Acid, deficiency, amide nicotinic
- Deficiency, deficient, nicotinamide
- Deficiency, deficient, nicotinic acid
- Alcohol, alcoholic, alcohol induced, pellagra
- Deficiency, deficient, niacin (amide)(tryptophan)
- Deficiency, deficient, vitamin (multiple), PP (pellagra preventing)
- Deficiency, deficient, vitamin (multiple), B (complex) NEC, with, pellagra
Notes for E52
As CIHI prints them, with any note E52 takes from the headings above it.
Includes
- Deficiency:• niacin(-tryptophan)• nicotinamidePellagra (alcoholic)
Excludes
Conditions classified elsewhere.
- Sequelae of niacin deficiency (E64.8)
- Nutritional anaemias (D50-D53)From E50-E64 Other nutritional deficiencies
- Complications of pregnancy, childbirth and the puerperium (O00-O99)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)transitory endocrine and metabolic disorders specific to fetus and newborn (P70-P74)From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Note
- All neoplasms, whether functionally active or not, are classified in Chapter II. Appropriate codes in this chapter (i.e. E05.8)(E07.0) (E16-E31)(E34.-) may be used, if desired, 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.From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Where E52 sits
- 1ChapterChapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
- 2Block E50-E64Other nutritional deficiencies
- 3Valid code E52Niacin deficiency [pellagra]
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code E52 mean?
E52 is the ICD-10-CA code for “Niacin deficiency [pellagra]” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is E52 in ICD-10-CA?
E52 sits under E50-E64 Other nutritional deficiencies, within Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90).
What coding notes apply to E52?
ICD-10-CA lists Includes, Excludes, Note notes for E52, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside E52
View E50-E64E50Vitamin A deficiencyE51Thiamine deficiencyE53Deficiency of other B group vitaminsE54Ascorbic acid deficiencyE55Vitamin D deficiencyE56Other vitamin deficienciesE58Dietary calcium deficiencyE59Dietary selenium deficiencyE60Dietary zinc deficiencyE61Deficiency of other nutrient elementsE63Other nutritional deficienciesE64Sequelae of malnutrition and other nutritional deficiencies