Poisoning by electrolytic/caloric/wtr-bal agnt, acc, init

This code signifies an accidental overdose or toxic exposure to substances that regulate electrolytes, calories, or fluid balance within the body. This includes agents like mineral supplements, diet aids, or diuretics, leading to an adverse physiological effect.

Apply this code when a patient presents with symptoms of poisoning due to an unintentional ingestion or exposure to an electrolytic, caloric, or water-balance agent. This is specifically for the initial encounter where the patient is actively receiving treatment for the poisoning.

• Requires an additional code to identify the specific substance (e.g., T46.3X1A for accidental poisoning by calcium-channel blockers).
• Distinguish from intentional self-harm or assault, which would use different seventh characters.
• Ensure the "A" seventh character is used only for the initial encounter for treatment of the poisoning.