Toxic effect of sulfur dioxide, accidental, subs

This code signifies a harmful reaction to sulfur dioxide exposure that occurred by accident, and the patient is presenting for follow-up care after the initial treatment. This toxic effect can manifest as respiratory distress, eye irritation, or skin burns, depending on the concentration and duration of exposure.

Apply this code when a patient is seen for continued management, monitoring, or evaluation of symptoms stemming from an unintentional sulfur dioxide poisoning. This includes visits for ongoing respiratory therapy, wound care for chemical burns, or assessment of persistent neurological effects. It is used after the acute phase of treatment has concluded.

• Ensure the encounter is for follow-up care, not the initial treatment.
• Verify the exposure was accidental (unintentional) and not intentional self-harm or assault.
• Always sequence this code after the primary diagnosis describing the specific manifestation of the toxic effect (e.g., acute bronchitis, chemical conjunctivitis).