ICD-10-CM 2027
ICD-10 code for magnesium deficiency
From the official ICD-10-CM alphabetic index entry “Deficiency, deficient › magnesium”. Page updated September 29, 2026.
About coding magnesium deficiency
The ICD-10-CM code for magnesium deficiency is E61.2 (Magnesium deficiency).
Within E61 (deficiency of other nutrient elements), E61.2 is specifically for magnesium deficiency. Related codes cover copper deficiency (E61.0), iron deficiency (E61.1), manganese deficiency (E61.3), chromium deficiency (E61.4), Molybdenum deficiency (E61.5), Vanadium deficiency (E61.6), deficiency of multiple nutrient elements (E61.7), deficiency of other specified nutrient elements (E61.8) and 1 more.
Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about magnesium deficiency ICD-10 codes
What is the ICD-10 code for magnesium deficiency?
- E61.2 — Magnesium deficiency.
Is E61.2 billable?
- Yes. E61.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E61.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E61.2 as a principal diagnosis.
Is E61.2 a CC or MCC?
- No. E61.2 is neither a CC nor an MCC under MS-DRG v44.0.