Poisoning by unsp antidepressants, undetermined, sequela

This code signifies a long-term consequence or residual effect resulting from a poisoning event involving an antidepressant that was not specified, and where the intent of the poisoning (e.g., accidental, intentional self-harm) could not be determined. It indicates that the acute phase of the poisoning has passed, but the patient is still experiencing related health problems.

Apply this code when documenting a patient presenting with a chronic condition or permanent injury directly attributable to a past, unclassified antidepressant poisoning. This is appropriate for follow-up encounters where the patient is being treated for the lasting effects, such as organ damage, neurological deficits, or psychiatric sequelae, and the specific antidepressant or intent of the original poisoning remains unknown.

• Requires a seventh character "S" to indicate sequela, meaning the residual effect of a past poisoning.
• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic kidney disease, cognitive impairment).
• Only use when the specific antidepressant involved in the poisoning is not documented, and the intent is undetermined. If either is known, a more specific code should be used.