Poisoning by unsp hormone antagonists, undetermined, subs

This code indicates a poisoning event involving an unknown hormone antagonist, where the intent of the poisoning (accidental, intentional self-harm, assault, or therapeutic error) cannot be determined. This specific code is used for encounters following the initial treatment of the poisoning, such as follow-up visits or ongoing management of complications.

Use this code for subsequent encounters when a patient presents with ongoing effects or complications from a poisoning by an unspecified hormone antagonist, and the intent of the poisoning remains undetermined. This would apply to situations where the patient is being monitored for long-term side effects or receiving further treatment after the acute phase has passed.

• Always ensure the "D" seventh character is appropriate for a subsequent encounter, indicating follow-up care.
• Pair this code with external cause codes (V00-Y99) to provide more detail about the circumstances, if known, even if the intent is undetermined.
• If the specific hormone antagonist is known, or the intent is determined, a more specific code should be used.