ICD-10-CM 2027
ICD-10 code for iron deficiency
From the official ICD-10-CM alphabetic index entry “Deficiency, deficient › iron”. Page updated September 29, 2026.
About coding iron deficiency
The ICD-10-CM code for iron deficiency is E61.1 (Iron deficiency). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on E61.1.
Within E61 (deficiency of other nutrient elements), E61.1 is specifically for iron deficiency. Related codes cover copper deficiency (E61.0), magnesium deficiency (E61.2), 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.
Don't report E61.1 together with the conditions in its Excludes1 note: iron deficiency anemia (D50.-).
Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
More specific iron deficiency codes (official index)
- anemia D50.9 — Iron deficiency anemia, unspecified
Don't confuse with (Excludes1 for E61.1)
- iron deficiency anemia (D50.-)
Common questions about iron deficiency ICD-10 codes
What is the ICD-10 code for iron deficiency?
- E61.1 — Iron deficiency. More specific codes apply when the documentation supports them: D50.9.
What is the ICD-10 code for anemia iron deficiency?
- D50.9 — Iron deficiency anemia, unspecified.
Is E61.1 billable?
- Yes. E61.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E61.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E61.1 as a principal diagnosis.
Is E61.1 a CC or MCC?
- No. E61.1 is neither a CC nor an MCC under MS-DRG v44.0.