Is E50 a billable ICD-10-CM code?

No. E50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E50 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 E50?

E50 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E50

E50 — Vitamin A deficiency

Non-billable headerICD-10-CM

E50 is a non-billable header ICD-10-CM code for vitamin a deficiency. 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 vitamin A deficiency (E64.1)

Other codes that can never be billed with E50

These codes carry an Excludes1 note pointing at E50. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E50 alone.

L86Keratoderma in diseases classified elsewhere
H11.14Conjunctival xerosis, unspecified
T45.2X6Underdosing of vitamins
T45.2X6AUnderdosing of vitamins, initial encounter
T45.2X6DUnderdosing of vitamins, subsequent encounter
T45.2X6SUnderdosing of vitamins, sequela
H18.44Keratomalacia
H53.0Amblyopia ex anopsia

Risk adjustment

E50 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 E50

10 child codes. Green means billable.

Questions about E50

Is E50 a billable ICD-10-CM code?: No. E50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E50 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 E50?: E50 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.