Poisoning by 4-Aminophenol derivatives, self-harm, init

This code signifies a deliberate act of self-poisoning using medications or substances derived from 4-aminophenol, such as acetaminophen. It indicates that the patient intentionally ingested an overdose of these compounds with the intent to cause harm to themselves.

Apply this code when documenting an initial presentation for a patient who has intentionally overdosed on acetaminophen or other 4-aminophenol derivatives. This includes emergency department visits, initial inpatient admissions, or the first outpatient encounter for this specific self-harm event.

• Always assign an additional code for the specific drug if known (e.g., T39.1X1- for acetaminophen).
• Ensure documentation clearly states "intentional self-harm" and "initial encounter."
• Do not use this code for accidental poisonings or adverse effects of therapeutic use.