Poisoning by anthelminthics, intentional self-harm, subs

This code signifies a patient presenting for follow-up care or ongoing treatment after intentionally harming themselves by ingesting an anthelminthic medication. Anthelminthics are drugs used to treat parasitic worm infections. The "subsequent encounter" indicates that the initial acute phase of poisoning has passed, and the patient is now receiving continued management.

Apply this code when documenting a patient's visit for ongoing medical care related to a previous intentional overdose of an anthelminthic. This includes appointments for monitoring organ function, managing residual symptoms, or addressing psychological aspects following the self-harm attempt. It is appropriate for any encounter after the initial acute treatment.

• Ensure documentation clearly states the poisoning was intentional self-harm and not accidental or assault.
• Confirm this is a subsequent encounter; an initial encounter would use a different 7th character.
• Always code with an accompanying external cause code (X60-X84) to specify the intent and circumstances of the poisoning.