Poisoning by expectorants, accidental (unintentional), init

This code signifies an accidental overdose or adverse reaction to an expectorant medication, such as guaifenesin, resulting from unintentional ingestion. The patient has experienced the initial presentation of symptoms related to this poisoning.

Apply this code when a patient presents to an emergency department or clinic with signs and symptoms of expectorant toxicity due to an accidental ingestion. This includes situations where a child mistakenly consumes an adult dose or an adult inadvertently takes too much of the medication.

• Ensure documentation clearly states "accidental" or "unintentional" to support the X1A specificity.
• Confirm this is the initial encounter for this specific poisoning event. Subsequent encounters would use a different seventh character.
• Always review the medical record for specific expectorant agents if known, though T48.4X1A covers unspecified expectorants.