Is E56 a billable ICD-10-CM code?

No. E56 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E56 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?

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

E56

E56 — Other vitamin deficiencies

Non-billable headerICD-10-CM

E56 is a non-billable header ICD-10-CM code for other vitamin deficiencies. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

sequelae of other vitamin deficiencies (E64.8)

Other codes that can never be billed with E56

These codes carry an Excludes1 note pointing at E56. 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 alone.

T45.2X6Underdosing of vitamins
T45.2X6AUnderdosing of vitamins, initial encounter
T45.2X6DUnderdosing of vitamins, subsequent encounter
T45.2X6SUnderdosing of vitamins, sequela
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 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.

Code to one of these instead E56

4 child codes. Green means billable.

Questions about E56

Is E56 a billable ICD-10-CM code?: No. E56 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E56 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?: E56 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.