Poisoning by other synthetic narcotics, undetermined, subs

This code indicates a poisoning event involving synthetic narcotics other than methadone, fentanyl, tramadol, or other specified synthetic narcotics, where the intent (e.g., accidental, intentional self-harm, assault) cannot be determined. This specific code is used for encounters following the initial treatment of the poisoning.

Use this code for follow-up visits, such as medication management, monitoring for long-term effects, or addressing complications arising from an undetermined poisoning by an unspecified synthetic narcotic. It is appropriate when the patient is seen for continued care after the acute phase of the poisoning has passed.

• Always ensure the intent of the poisoning is truly "undetermined" before assigning this code.
• Confirm this is a subsequent encounter, not the initial treatment for the poisoning.
• Code any associated symptoms or complications of the poisoning in addition to this code.