Toxic eff of fluorine gas and hydrogen fluoride, undet, init

This code signifies an adverse health effect resulting from exposure to fluorine gas or hydrogen fluoride, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. Patients may present with respiratory distress, skin burns, eye irritation, or systemic symptoms due to the corrosive and toxic nature of these chemicals.

Apply this code when a patient presents with symptoms or injuries consistent with fluorine gas or hydrogen fluoride poisoning, and the medical record does not clearly document whether the exposure was accidental, intentional, or due to assault. This is typically used for the initial assessment and treatment of the toxic effect.

• Always strive to clarify the intent of exposure if possible; this code is for "undetermined" cases.
• Remember to use a secondary code for the specific manifestations of the poisoning (e.g., chemical burns, respiratory failure).
• The "A" in the seventh character indicates an initial encounter for active treatment of the toxic effect.