Toxic effect of smoke, accidental (unintentional), subs

This code signifies a harmful physiological response to smoke exposure that occurred unintentionally, and the patient is receiving follow-up care for the effects. It indicates that the initial treatment for the toxic effect has concluded, and the patient is now in a recovery or healing phase.

Apply this code for patients presenting for subsequent visits related to smoke inhalation injuries, such as persistent respiratory symptoms, delayed onset of complications, or wound care for burns sustained during the smoke exposure. This includes follow-up appointments after discharge from an acute care setting for the initial smoke-related injury.

• Ensure documentation clearly states "subsequent encounter" or indicates ongoing care for the effects of the initial smoke exposure.
• Always code the specific type of smoke exposure (e.g., from fire, chemical) if known and documented, using a more specific code if available.
• Do not use this code for the initial treatment of the toxic effect; refer to the "initial encounter" codes for that scenario.