Toxic effect of hydrogen sulfide, self-harm, sequela

This code signifies the long-term or residual effects resulting from a deliberate act of self-poisoning with hydrogen sulfide. It indicates that the patient previously experienced an acute toxic exposure to hydrogen sulfide, intentionally inflicted, and is now presenting with ongoing health issues directly attributable to that event.

Apply this code when documenting chronic conditions, permanent disabilities, or persistent symptoms that are a direct consequence of a past intentional hydrogen sulfide poisoning. This would include follow-up visits for neurological damage, respiratory complications, or other organ system dysfunction that developed after the acute toxic event.

• Requires a seventh character "S" for sequela, indicating a late effect.
• Always sequence this code after the code(s) for the specific sequela being treated (e.g., specific neurological deficit).
• Do not use for acute toxic effects; this code is exclusively for residual conditions.