Is E20 a billable ICD-10-CM code?

No. E20 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E20 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).

What cannot be coded together with E20?

E20 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E20

E20 — Hypoparathyroidism

Non-billable headerICD-10-CM

E20 is a non-billable header ICD-10-CM code for hypoparathyroidism. 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.

Di George's syndrome (D82.1)
postprocedural hypoparathyroidism (E89.2)
tetany NOS (R29.0)
transitory neonatal hypoparathyroidism (P71.4)

Other codes that can never be billed with E20

These codes carry an Excludes1 note pointing at E20. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E20 alone.

R29.0Tetany
E34Other endocrine disorders
E83Disorders of mineral metabolism
E83.5Disorders of calcium metabolism
E31Polyglandular dysfunction

Risk adjustment

E20 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 E20

4 child codes. Green means billable.

Questions about E20

Is E20 a billable ICD-10-CM code?: No. E20 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E20 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).
What cannot be coded together with E20?: E20 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.