ICD-10-CM 2027
ICD-10 code for dietary hypocalcemia
From the official ICD-10-CM alphabetic index entry “Hypocalcemia › dietary”. Page updated September 29, 2026.
About coding dietary hypocalcemia
The ICD-10-CM code for dietary hypocalcemia is E58 (Dietary calcium deficiency).
Don't report E58 together with the conditions in its Excludes1 note: disorders of calcium metabolism (E83.5-) and sequelae of calcium 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 E58)
Common questions about dietary hypocalcemia ICD-10 codes
What is the ICD-10 code for dietary hypocalcemia?
- E58 — Dietary calcium deficiency.
Is E58 billable?
- Yes. E58 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E58 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E58 as a principal diagnosis.
Is E58 a CC or MCC?
- No. E58 is neither a CC nor an MCC under MS-DRG v44.0.