Poisoning by thyroid hormones and sub, self-harm, init

This code signifies an adverse event resulting from the deliberate self-administration of thyroid hormones or their synthetic substitutes in an attempt to cause harm. The patient has intentionally ingested or otherwise taken an excessive amount of these medications. This code is specifically for the initial presentation and treatment of such an event.

Apply this code when a patient presents to an emergency department or clinic following a suicide attempt involving an overdose of thyroid medication (e.g., levothyroxine, liothyronine). It is appropriate for the first encounter where the poisoning is diagnosed and initial treatment is rendered. This code would also be used if the patient is admitted for management of the acute toxic effects.

• Always assign an additional code for the specific thyroid hormone or substitute involved (e.g., T49.7X1A for levothyroxine).
• Remember to also code any associated mental health diagnoses, such as major depressive disorder, if documented.
• This "A" suffix indicates an initial encounter; subsequent encounters for treatment of the poisoning would use "D" (subsequent) or "S" (sequela).