Poisoning by oth hormone antagonists, undetermined, sequela

This code indicates a long-term health problem or condition resulting from an unconfirmed or unknown type of poisoning by a hormone antagonist. The initial poisoning event has already resolved, but the patient is experiencing residual effects. The specific hormone antagonist involved could not be identified or was not documented.

Use this code when a patient presents with a sequela (late effect) of a poisoning by a hormone antagonist, and the specific substance is not known or documented. This applies to situations where the initial acute poisoning event is no longer active, but the patient is being treated for chronic or residual effects. An example would be chronic organ damage or neurological deficits attributed to a past, unspecified hormone antagonist poisoning.

• Always sequence the sequela code first, followed by codes for the specific residual condition(s).
• Ensure documentation clearly links the current condition to a past poisoning event by an undetermined hormone antagonist.
• Avoid using this code for acute poisoning events; instead, use the appropriate acute poisoning code with the 7th character "A" or "D."