Toxic effect of sulfur dioxide, undetermined, subs encntr

This code indicates a harmful physiological response to sulfur dioxide exposure, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is receiving follow-up care for the sequelae or complications of this toxic effect after the acute phase of treatment.

Apply this code when a patient presents for ongoing management of health issues directly resulting from sulfur dioxide poisoning, and the initial encounter for the acute poisoning has already been coded. This is appropriate for clinic visits, follow-up hospitalizations, or other encounters where the focus is on monitoring or treating the long-term effects.

• Requires an additional code for the specific manifestations of the sulfur dioxide toxicity.
• The "D" seventh character signifies a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.
• Ensure documentation clearly states the undetermined intent of the exposure to justify the "X" fifth character.