Poisn by oth prim sys and hematolog agents, assault, subs

This code signifies a patient presenting for follow-up care or ongoing treatment related to an intentional poisoning by a systemic or hematological agent, such as an anticoagulant, heavy metal, or other substance affecting multiple body systems or blood components. The poisoning was inflicted by another individual with intent to harm.

Apply this code when documenting subsequent encounters for patients who were previously diagnosed with an assault-related poisoning by a systemic or hematological agent. This includes visits for monitoring, managing long-term effects, or continuing treatment after the initial acute phase has passed.

• Always sequence this code after the primary diagnosis for the specific effects of the poisoning.
• Ensure documentation clearly states the poisoning was an assault and the encounter is subsequent to the initial treatment.
• Do not use for initial acute care; refer to the appropriate initial encounter code (T45.8X3A).