Poisoning by cannabis, accidental (unintentional), sequela

This code indicates a long-term consequence or complication arising from an accidental overdose or unintended exposure to cannabis. It signifies that the acute phase of the poisoning has passed, and the patient is now experiencing residual effects directly attributable to that past event. These sequelae could be neurological, psychological, or other persistent health issues.

Apply this code when documenting conditions that are a direct result of a previous, unintentional cannabis poisoning, and the patient is no longer in the acute phase of intoxication. Examples include chronic anxiety, persistent cognitive deficits, or other lasting health problems clearly linked to the past accidental cannabis exposure. This code is appropriate for follow-up visits addressing these long-term effects.

• 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 cannabis poisoning.
• Do not use this code for acute cannabis intoxication or intentional self-harm; other codes are available for those scenarios.