Poisn by antiparkns drug/centr musc-tone depr, slf-hrm, init

This code signifies a patient presenting with adverse effects from antiparkinsonism medications or other central muscle-tone depressants, specifically when the ingestion or exposure was a deliberate act of self-harm. The poisoning is acute, and the patient is in the initial phase of treatment for this specific episode.

Apply this code when documentation clearly indicates an intentional overdose or misuse of antiparkinsonism drugs (e.g., levodopa, carbidopa, dopamine agonists) or other medications that depress central muscle tone, with the explicit intent of self-harm. This is appropriate for the initial hospital visit or encounter where the poisoning is first evaluated and treated.

• Always sequence this code before any codes for the specific manifestations of the poisoning.
• Ensure the documentation explicitly states "intentional self-harm" or similar language to support the second character "2."
• Verify that this is the "initial encounter" for the poisoning episode, indicated by the seventh character "A."