Poisoning by oth hormone antagonists, undetermined, init

This code signifies an adverse event resulting from the ingestion or exposure to a hormone antagonist not otherwise specified, where the intent (accidental, intentional self-harm, assault, or undetermined) cannot be established. The patient is in the initial phase of receiving active treatment for the poisoning.

Apply this code when a patient presents with symptoms of poisoning due to an unidentifiable or vaguely documented hormone antagonist, and the circumstances surrounding the exposure are unclear. This is appropriate for the first encounter where the poisoning is being evaluated and managed.

• Always assign an additional code for the specific hormone antagonist if known (e.g., from categories T38.0-T38.8).
• Use a secondary code from Chapter 20 (External Causes of Morbidity) to further specify the intent, if determined, and the place of occurrence.
• The 7th character "A" indicates an initial encounter, meaning the patient is receiving active treatment for the poisoning.