Nontoxic single thyroid nodule

This code describes a solitary, palpable or imaging-identified thyroid nodule that is not associated with hyperthyroidism or hypothyroidism. The nodule is typically benign and does not produce excess thyroid hormones.

This code is appropriate when a patient presents with a single thyroid nodule, and thyroid function tests (TSH, T3, T4) are within normal limits. Documentation should clearly indicate the presence of a single nodule and the absence of thyroid dysfunction.

• Differentiate from multiple thyroid nodules (E04.2) or toxic thyroid nodules (E05.1-).
• Ensure documentation confirms the "nontoxic" nature through normal thyroid function studies.
• Sequence this code as a primary diagnosis when the nodule is the reason for the encounter, or as a secondary diagnosis if it's an incidental finding during evaluation for another condition.