ICD-10-CM 2027
ICD-10 code for selenium deficiency
From the official ICD-10-CM alphabetic index entry “Selenium deficiency, dietary”. Page updated September 29, 2026.
About coding selenium deficiency
The ICD-10-CM code for selenium deficiency is E59 (Dietary selenium deficiency).
Don't report E59 together with the conditions in its Excludes1 note: sequelae of selenium 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 E59)
- sequelae of selenium deficiency (E64.8)
Common questions about selenium deficiency ICD-10 codes
What is the ICD-10 code for selenium deficiency?
- E59 — Dietary selenium deficiency.
Is E59 billable?
- Yes. E59 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E59 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E59 as a principal diagnosis.
Is E59 a CC or MCC?
- No. E59 is neither a CC nor an MCC under MS-DRG v44.0.