Poisoning by cardi-stim glycos/drug simlar act, undet, subs

This code signifies a poisoning event involving cardiac-stimulant glycosides or similar-acting drugs where the intent (accidental, intentional self-harm, assault) is unknown or cannot be determined. The patient is receiving active treatment for the poisoning's sequelae, or for complications that arose during the initial treatment phase.

Apply this code when a patient presents for follow-up care, monitoring of ongoing effects, or treatment of complications directly related to a previously diagnosed cardiac-stimulant glycoside poisoning. The original poisoning event's intent remains unclear, and the patient is no longer in the initial acute phase of treatment.

• Always sequence this code after the primary diagnosis for the specific manifestation of the poisoning.
• Ensure documentation clearly supports the "undetermined" intent and the "subsequent encounter" status.
• Do not use this code for initial encounters or for sequelae (late effects) once active treatment for the poisoning has concluded.