Mech loosening of internal right knee prosthetic joint, subs

This code signifies that a patient is experiencing a mechanical loosening of an artificial joint located in their right knee. This loosening is not due to an infection or fracture, but rather a failure of the prosthetic components to remain securely fixed. It indicates a follow-up visit for this specific complication.

Use this code for subsequent encounters where a patient is being treated or evaluated for the mechanical loosening of their right knee replacement. This includes visits for further diagnostic work-up, conservative management, or pre-operative planning for revision surgery. It is appropriate when the loosening has already been identified and is being addressed.

• Ensure documentation clearly specifies "mechanical" loosening and not other causes like infection or periprosthetic fracture.
• Verify the laterality is explicitly documented as "right knee."
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.