Poisoning by pyrazolone derivatives, self-harm, subs

This code signifies a poisoning event resulting from the deliberate self-administration of pyrazolone derivatives, such as antipyrine or aminopyrine, with the intent to cause harm. The patient is currently receiving follow-up care for complications or sequelae directly related to this initial self-inflicted overdose.

This code is appropriate for encounters where a patient is being treated for ongoing effects, complications, or monitoring related to a previous intentional overdose of pyrazolone derivatives. This includes follow-up visits for organ damage, psychological evaluation, or management of chronic symptoms stemming from the initial self-harm attempt.

• Requires an additional code to specify the specific pyrazolone derivative if known (e.g., T39.2X1- for antipyrine).
• Always sequence this code after any codes for the specific manifestations or complications of the poisoning.
• Distinguish from initial encounters (A), subsequent encounters (D), and sequela (S) based on the patient's current stage of care.