Toxic effect of hydrogen sulfide, undetermined, init encntr

This code signifies a patient presenting with adverse health effects due to exposure to hydrogen sulfide, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined from the available documentation. The "initial encounter" indicates that the patient is receiving active treatment for the acute toxic effects.

Apply this code when a patient is diagnosed with hydrogen sulfide poisoning, and the medical record clearly states that the circumstances surrounding the exposure are unknown or cannot be specified. This is appropriate for the first visit where the patient is being evaluated and treated for the acute symptoms of the toxic effect.

• Ensure documentation explicitly states "undetermined" or "unspecified" intent for the hydrogen sulfide exposure.
• Do not use this code if the intent (e.g., accidental, intentional) is clearly documented; use the appropriate specific intent code instead.
• Pair with codes for specific symptoms or conditions resulting from the hydrogen sulfide toxicity.