Poisn by unsp prim sys and hematolog agent, assault, subs

This code indicates a patient presenting for follow-up care or treatment of adverse effects resulting from an intentional overdose or exposure to an unknown systemic or hematological agent. The poisoning was inflicted by another person with intent to harm.

Use this code when documenting subsequent care for a patient who was poisoned by an unspecified substance affecting the entire body or blood system, and the poisoning was determined to be an assault. This applies to encounters after the initial treatment, such as follow-up appointments, rehabilitation, or management of long-term complications.

• Always sequence this code after the primary diagnosis for the specific adverse effect or complication being treated.
• Ensure documentation clearly states the poisoning was an assault and that this is a subsequent encounter.
• If the specific agent is later identified, a more specific T-code should be used.