Toxic effect of sulfur dioxide, intentional self-harm, subs

This code signifies a toxic reaction resulting from deliberate self-poisoning with sulfur dioxide. The patient is experiencing ongoing effects or complications from an initial exposure that occurred previously.

Apply this code for follow-up visits or hospitalizations where a patient is being treated for the lingering or delayed consequences of an intentional sulfur dioxide overdose. This includes managing organ damage, respiratory issues, or other systemic effects after the initial acute phase.

• Requires an external cause code (X68.-) to fully describe the intent and circumstances.
• Do not use for the initial encounter of the poisoning; a different 7th character would be appropriate.
• Ensure documentation clearly specifies "intentional self-harm" and "subsequent encounter" for accurate code assignment.