Poisoning by oth drug/meds/biol subst, assault, init

This code signifies an intentional act of harm where a patient has been poisoned by a drug, medication, or biological substance administered by another person with the intent to injure or kill. It specifically indicates the initial phase of treatment for such an event.

Apply this code when documenting the first medical encounter for a patient who has been poisoned by a substance, and the poisoning is determined to be the result of an assault. This includes cases where a substance was forcibly administered, covertly given, or otherwise used with malicious intent.

• Always assign an external cause code (e.g., X40-X49 for accidental, X60-X69 for intentional self-harm, X85-X90 for assault) in conjunction with this code to fully describe the circumstances.
• Ensure documentation clearly supports the "assault" intent and that this is the initial encounter for the poisoning.
• Distinguish carefully between accidental poisoning, intentional self-harm, and assault based on provider documentation.