Toxic effect of unsp substance, intentional self-harm, subs

This code signifies a toxic reaction resulting from a patient deliberately ingesting or exposing themselves to an unknown substance with the intent to cause self-harm. It indicates that the patient is receiving follow-up care for this event, beyond the initial treatment.

Apply this code when a patient presents for ongoing management, monitoring, or treatment related to a previous intentional self-poisoning where the specific substance involved was not identified. This includes scenarios such as follow-up appointments for organ damage assessment, psychiatric evaluation, or medication management after the acute phase of the toxic exposure.

• Ensure documentation clearly states "intentional self-harm" and that the substance is "unspecified" or "unknown."
• The "D" seventh character indicates a subsequent encounter, meaning care after the initial treatment of the toxic effect.
• Always sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if the focus is on a complication directly resulting from the toxic effect.