Personal history of malignant neoplasm of thyroid

This code indicates that a patient has a documented history of a primary malignant tumor originating in the thyroid gland, and this malignancy is no longer active or present. It signifies that the patient has completed treatment for thyroid cancer and is currently in remission or has no evidence of disease.

This code is appropriate for patients who have previously been diagnosed with and treated for thyroid cancer, and who are now presenting for follow-up care, surveillance, or treatment of unrelated conditions. It should be used when the patient's current encounter is not for active cancer treatment.

• Always confirm that the malignancy is no longer active; if active, a code from the C73 category would be more appropriate.
• Do not use this code if the patient has a current recurrence or metastasis of the thyroid cancer.
• Consider sequencing this code after any current conditions being treated, unless the history of thyroid cancer directly impacts the current encounter's primary diagnosis.