Poisoning by antithyroid drugs, intentional self-harm, subs

This code signifies a patient presenting for follow-up care or complications arising from a deliberate overdose or misuse of antithyroid medications. This intentional self-harm event has already occurred, and the current encounter addresses its ongoing effects or management.

Apply this code for subsequent visits related to the treatment of organ damage, psychological evaluation, or ongoing monitoring following an intentional antithyroid drug poisoning. It is appropriate for encounters after the initial acute treatment phase.

• Ensure documentation clearly indicates "intentional self-harm" and that this is not the initial encounter for the poisoning.
• Always code the specific antithyroid drug if known and documented.
• Pair with codes for any associated physical or psychological sequelae of the poisoning.