Adverse effect of tricyclic antidepressants, subs encntr

This code signifies a patient experiencing an undesirable or harmful reaction to a tricyclic antidepressant medication during a follow-up visit. This adverse effect is not due to an overdose or poisoning, but rather a side effect occurring at therapeutic or sub-therapeutic dosages. The patient is being seen for ongoing management or evaluation of this reaction.

Apply this code when a patient presents for a subsequent appointment to address or monitor an adverse reaction to a tricyclic antidepressant, such as dry mouth, constipation, blurred vision, or cardiac arrhythmias. This includes situations where the medication was prescribed appropriately, and the patient is now seeking care for a recognized side effect.

• Always use in conjunction with a code identifying the specific adverse effect (e.g., R11.2 for nausea and vomiting).
• Ensure documentation clearly states the encounter is for follow-up or ongoing management of the adverse effect, not initial treatment.
• Distinguish from poisoning (T43.0X1-) or underdosing (T43.0X6-) of tricyclic antidepressants.