Is E56.1 a billable ICD-10-CM code?

Yes. E56.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E56.1 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 E56.1?

E56.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E56.1

E56.1 — Deficiency of vitamin K

Billable / specific codeICD-10-CM

E56.1 is a billable, specific ICD-10-CM code for deficiency of vitamin k. 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.

deficiency of coagulation factor due to vitamin K deficiency (D68.4)
vitamin K deficiency of newborn (P53)

Other codes that can never be billed with E56.1

These codes carry an Excludes1 note pointing at E56.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E56.1 alone.

T45.7X6Underdosing of anticoagulant antagonist, vitamin K and other coagulants
T45.7X6AUnderdosing of anticoagulant antagonist, vitamin K and other coagulants, initial encounter
T45.7X6DUnderdosing of anticoagulant antagonist, vitamin K and other coagulants, subsequent encounter
T45.7X6SUnderdosing of anticoagulant antagonist, vitamin K and other coagulants, sequela

Risk adjustment

E56.1 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 E56.1 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 E56.1.

Menadione deficiency
Avitaminosis›K
Deficiency, deficient›menadione(vitamin K)
Deficiency, deficient›vitamin NOS›K

Related codes at this level

Codes that share E56. If E56.1 is not quite right, the correct code is usually one of these.

Questions about E56.1

Is E56.1 a billable ICD-10-CM code?: Yes. E56.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E56.1 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 E56.1?: E56.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.