245.4
ICD-9-CMThis code signifies inflammation of the thyroid gland that is a direct consequence of medical intervention or treatment. It represents thyroiditis induced by drugs, radiation, surgery, or other therapeutic procedures, rather than an autoimmune or infectious etiology.
Apply this code when documentation clearly links the thyroiditis to a specific medical treatment, such as amiodarone therapy, external beam radiation to the neck, or post-surgical complications. The physician's notes should explicitly state the iatrogenic nature of the thyroid inflammation.
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