Toxic effect of unspecified substance, assault, subs encntr

This code signifies a toxic effect resulting from an unspecified substance, where the exposure was intentionally inflicted by another person (assault). It is used when the patient is receiving follow-up care for the sequelae of this toxic exposure after the initial treatment phase.

Apply this code when documenting ongoing treatment, monitoring, or rehabilitation for a patient who previously experienced a toxic effect due to an assault with an unknown substance. Examples include follow-up appointments for organ damage, neurological deficits, or chronic pain stemming from the initial event. This code is appropriate for encounters occurring after the acute phase of treatment.

• Always sequence this code after the definitive diagnosis related to the specific toxic effect (e.g., acute kidney failure, toxic encephalopathy).
• Ensure documentation clearly indicates the toxic effect is due to an assault and that the substance remains unspecified.
• Verify the encounter is for subsequent care, not the initial treatment of the acute poisoning.