Thyrotoxicosis factitia without thyrotoxic crisis or storm

This code describes hyperthyroidism caused by the ingestion of exogenous thyroid hormone, not due to an underlying thyroid gland disorder. The patient exhibits symptoms of an overactive thyroid, such as weight loss, palpitations, and anxiety, but is not experiencing a life-threatening thyrotoxic crisis or storm. This condition is often iatrogenic or self-induced.

Use this code when documentation clearly indicates that the patient's thyrotoxicosis is a direct result of taking thyroid hormone medication, either prescribed or illicitly obtained. This applies when the patient is symptomatic but their condition is stable and does not meet criteria for a thyrotoxic crisis. Supporting documentation would include medication history, thyroid function tests showing elevated thyroid hormones with suppressed TSH, and the absence of thyroid gland pathology.

• Do not use this code if the patient is experiencing a thyrotoxic crisis; a more specific code for crisis/storm would be appropriate.
• Distinguish from other forms of thyrotoxicosis (e.g., Graves' disease, toxic nodular goiter) which have different underlying etiologies.
• Consider an additional code for the adverse effect of the drug if the thyrotoxicosis is due to prescribed medication.