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E61.1

E61.1Iron deficiency

Billable / specific codeICD-10-CM

E61.1 is a billable, specific ICD-10-CM code for iron deficiency. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • iron deficiency anemia (D50.-)

Other codes that can never be billed with E61.1

These codes carry an Excludes1 note pointing at E61.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E61.1 alone.

  • T45.4X6Underdosing of iron and its compounds
  • T45.4X6AUnderdosing of iron and its compounds, initial encounter
  • T45.4X6DUnderdosing of iron and its compounds, subsequent encounter
  • T45.4X6SUnderdosing of iron and its compounds, sequela

Risk adjustment

E61.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How E61.1 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E61.1.

  • Deficiency, deficientiron

Related codes at this level

Codes that share E61. If E61.1 is not quite right, the correct code is usually one of these.

Questions about E61.1

Is E61.1 a billable ICD-10-CM code?
Yes. E61.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E61.1 sit in the tabular list?
Endocrine, nutritional and metabolic diseases (E00-E89), in the block Other nutritional deficiencies (E50-E64).
What cannot be coded together with E61.1?
E61.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.