Is E74 a billable ICD-10-CM code?

No. E74 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E74 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).

What cannot be coded together with E74?

E74 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E74

E74 — Other disorders of carbohydrate metabolism

Non-billable headerICD-10-CM

E74 is a non-billable header ICD-10-CM code for other disorders of carbohydrate metabolism. 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.

diabetes mellitus (E08-E13)
hypoglycemia NOS (E16.2)
increased secretion of glucagon (E16.3)
mucopolysaccharidosis (E76.0-E76.3)

Other codes that can never be billed with E74

These codes carry an Excludes1 note pointing at E74. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E74 alone.

R79Other abnormal findings of blood chemistry
R81Glycosuria
D55.2Anemia due to disorders of glycolytic enzymes
E74.1Disorders of fructose metabolism
E88.4Mitochondrial metabolism disorders

Risk adjustment

E74 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 E74

7 child codes. Green means billable.

Questions about E74

Is E74 a billable ICD-10-CM code?: No. E74 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E74 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).
What cannot be coded together with E74?: E74 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.