E61.2Magnesium deficiency

E61.2 is the ICD-10-CM diagnosis code for magnesium deficiency. It belongs to category E61 (deficiency of other nutrient elements), block E50-E64 (other nutritional deficiencies) and chapter 4 (endocrine, nutritional and metabolic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

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.

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.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 269.3 (mineral deficiency, not elsewhere classified).