T65.823S
ICD-10-CMToxic effect of harmful algae and algae toxins, assault, sequela
This code signifies the long-term or residual health problems resulting from a patient's exposure to harmful algae or their toxins, specifically when the exposure was due to an intentional act of harm by another person. These sequelae can manifest in various organ systems, depending on the type of toxin and the severity of the initial poisoning.
Use this code when documenting chronic or lasting conditions, such as persistent neurological deficits, chronic respiratory issues, or organ damage, that are directly attributable to a past toxic exposure from harmful algae or their toxins. The key differentiator for this specific code is that the original exposure must have been an assault.
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