ICD-10 Code E06 – Thyroiditis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E06 – Thyroiditis
What it is
E06 identifies thyroiditis, an inflammation of the thyroid gland. Use it when the record documents thyroid inflammation without a more specific type or cause.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include thyroid tenderness, enlargement, or altered thyroid function, but presentation depends on the specific thyroiditis type.
When to use this code
Use E06 when the clinician documents thyroiditis and does not specify a more detailed ICD-10 option. It may apply to acute, subacute, or chronic thyroid inflammation when the record supports only the broader diagnosis. Check documentation for the exact subtype if available.
Do not use for
Do not use E06 if the record identifies a different thyroid disorder, such as simple goiter or thyroid neoplasm. If the note names a specific thyroiditis subtype with its own code, code that instead.
Coding tip
Code the documented thyroiditis subtype first; use E06 only when the chart supports thyroiditis but not a more specific code.