Poisoning by opth drugs and preparations, undetermined, subs

This code signifies a patient presenting for follow-up care related to an adverse event involving ophthalmological medications or preparations, where the intent of the poisoning (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is no longer in the acute phase of the poisoning but is receiving ongoing treatment or monitoring for its effects.

Apply this code when documenting subsequent encounters for patients who experienced poisoning from eye drops, ointments, or other ocular drugs, and the circumstances surrounding the exposure remain unclear. This would include situations where a patient is returning for a check-up, medication adjustment, or treatment of lingering symptoms after the initial poisoning event.

• Always pair this code with an external cause code (V00-Y99) to provide more detail about the circumstances, if known.
• Ensure documentation clearly indicates "undetermined" intent and that this is a "subsequent encounter" for the poisoning.
• Do not use for initial encounters or when the intent of the poisoning is known (e.g., accidental, intentional).