Toxic effect of cyanides, accidental, sequela

This code signifies the long-term or residual effects resulting from an accidental exposure to cyanide. These sequelae can manifest as various chronic health problems affecting neurological, cardiovascular, or other organ systems, occurring after the acute phase of poisoning has resolved.

Apply this code when documenting conditions that are a direct consequence of a past, unintentional cyanide poisoning. This would include follow-up encounters for patients experiencing persistent neurological deficits, chronic organ damage, or other lasting health issues clearly linked to a prior accidental cyanide exposure.

• 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 past accidental cyanide poisoning.
• Do not use for acute cyanide poisoning; this code is exclusively for the late effects.