Hi,
Question : Is the trochlea considered part of the patellofemoral compartment, or would an insurer consider trochlea services “separate compartment” procedures?
Answer: The trochlea is considered part of the patellofemoral compartment, Stout says. “The trochlea is the depression on the anterior distal femur where the patella articulates with the femur,” she says. “Think of it like a trough that the patella rests in.”
http://www.supercoder.com/articles/articles-alerts/orc/coding-quiz-know-your-knee-anatomy-and-increase-your-coding-accuracy/.
Hope this helps..
Regards,
Nalini CPC