ICD-10-CM 2027
ICD-10 code for Pellagroid syndrome
From the official ICD-10-CM alphabetic index entry “Syndrome › pellagroid”. Page updated September 29, 2026.
About coding Pellagroid syndrome
The ICD-10-CM code for Pellagroid syndrome is E52 (Niacin deficiency [pellagra]).
Don't report E52 together with the conditions in its Excludes1 note: sequelae of niacin deficiency (E64.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC, relative weight 1.3395) and DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC, relative weight 0.7865), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Don't confuse with (Excludes1 for E52)
- sequelae of niacin deficiency (E64.8)
Common questions about Pellagroid syndrome ICD-10 codes
What is the ICD-10 code for Pellagroid syndrome?
- E52 — Niacin deficiency [pellagra].
Is E52 billable?
- Yes. E52 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E52 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E52 as a principal diagnosis.
Is E52 a CC or MCC?
- No. E52 is neither a CC nor an MCC under MS-DRG v44.0.