Is E00 a billable ICD-10-CM code?

No. E00 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E00 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of thyroid gland (E00-E07).

What cannot be coded together with E00?

E00 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

E00

E00 — Congenital iodine-deficiency syndrome

Non-billable headerICD-10-CM

E00 is a non-billable header ICD-10-CM code for congenital iodine-deficiency syndrome. 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.

subclinical iodine-deficiency hypothyroidism (E02)

Use additional code

Add a secondary code to capture the detail described below.

code (F70-F79) to identify associated intellectual disabilities.

Other codes that can never be billed with E00

These codes carry an Excludes1 note pointing at E00. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E00 alone.

E61Deficiency of other nutrient elements
E01Iodine-deficiency related thyroid disorders and allied conditions
E03Other hypothyroidism
E04Other nontoxic goiter

Risk adjustment

E00 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 history

E00 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead E00

4 child codes. Green means billable.

Questions about E00

Is E00 a billable ICD-10-CM code?: No. E00 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E00 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of thyroid gland (E00-E07).
What cannot be coded together with E00?: E00 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.