Toxic effect of harmful algae and algae toxins, acc, init

This code signifies an adverse health effect resulting from unintentional exposure to toxins produced by harmful algae. This can manifest as various symptoms depending on the specific toxin and route of exposure, such as gastrointestinal distress, neurological issues, or skin irritation.

Apply this code when a patient presents with symptoms directly attributable to accidental contact with or ingestion of harmful algae or their toxins. This is appropriate for initial evaluations and treatments following the exposure event, such as after swimming in contaminated water or consuming contaminated seafood.

• Ensure documentation clearly states the exposure was accidental and not intentional self-harm or assault.
• Verify that the encounter is the initial one for this specific toxic effect.
• Differentiate from allergic reactions to algae, which would be coded differently.