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

This code signifies the long-term or residual effects resulting from an accidental exposure to harmful algae or their toxins. These sequelae can manifest in various organ systems, such as persistent neurological deficits, chronic respiratory issues, or ongoing dermatological conditions, long after the initial acute toxic event has resolved.

Use this code when documenting a patient presenting with a current condition that is a direct consequence of a past, unintentional exposure to harmful algae or their toxins. This applies to situations where the acute phase of the poisoning has passed, but the patient continues to experience related health problems.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a previous, accidental harmful algae exposure.
• Do not use for acute toxic effects; this code is exclusively for sequelae.