Poisoning by enzymes, accidental (unintentional), sequela

This code signifies a long-term health problem or complication that arose from an accidental overdose or exposure to an enzyme. The initial poisoning event has resolved, but the patient continues to experience residual effects directly attributable to that past incident. These sequelae can manifest in various organ systems depending on the specific enzyme involved and the extent of the original poisoning.

Use this code when documenting chronic conditions, permanent damage, or persistent symptoms that are a direct consequence of a previously sustained, unintentional enzyme poisoning. This applies when the acute phase of the poisoning has passed, and the patient is now being treated for the lasting effects. Examples include chronic organ dysfunction, neurological deficits, or persistent allergic reactions resulting from the initial accidental exposure.

• Always sequence this sequela code after the code for the specific residual condition being treated.
• Ensure documentation clearly links the current condition to the past accidental enzyme poisoning.
• Do not use this code for acute poisoning events; those require codes from the initial encounter or subsequent encounter categories.