Adverse effect of tramadol, subsequent encounter

This code signifies a patient experiencing an unintended and undesirable reaction to tramadol during a follow-up visit. The adverse effect is not due to poisoning, overdose, or improper use, but rather a known or expected side effect of the medication when properly administered.

Apply this code when a patient presents for ongoing management or evaluation of an adverse effect from tramadol, such as nausea, dizziness, constipation, or somnolence, after the initial treatment of the reaction has been provided. This is appropriate for subsequent encounters where the patient's condition related to the adverse effect is still being monitored or treated.

• Always sequence the code for the specific adverse effect (e.g., R11.0 for nausea) first, followed by this code.
• Ensure documentation clearly states "adverse effect" and not "poisoning" or "overdose" to differentiate from T40.4X1-T40.4X4.
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.