Toxic effect of fusel oil, undetermined, initial encounter

This code signifies a harmful reaction to fusel oil, a byproduct of fermentation, when the intent of exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. It indicates the patient is in the initial phase of treatment for this toxic effect.

Apply this code when a patient presents with symptoms of fusel oil poisoning, and the medical record does not clearly specify whether the exposure was accidental, intentional, or due to assault. This is appropriate for the first encounter for this specific poisoning event.

• Always assign an additional code for the specific symptoms or manifestations of the fusel oil toxicity.
• Only use the "A" (initial encounter) seventh character for the first time the patient is seen for this condition.
• If the intent of exposure is later determined, update the code to reflect the specific intent (e.g., accidental, intentional self-harm).