E00 vs E02
E00 (Congenital iodine-deficiency syndrome) compared with E02 (Subclinical iodine-deficiency hypothyroidism), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. E00 carries an Excludes1 note covering E02: “subclinical iodine-deficiency hypothyroidism (E02)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| E00Congenital iodine-deficiency syndrome | E02Subclinical iodine-deficiency hypothyroidism | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) |
| Definition | Congenital iodine-deficiency syndrome is a non-billable ICD-10-CM category code (E00). | Subclinical iodine-deficiency hypothyroidism is a billable ICD-10-CM diagnosis code (E02). |
| Use additional code | code (F70-F79) to identify associated intellectual disabilities. | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources