With sinus problems becoming common everywhere, diagnoses supporting medical necessity abound. Samantha Mullins, CPC, in Birmingham, Ala., Cindy Parman, CPC, CPC-H, RCC, in Dallas, Ga., and Vicki Embich in Pensacola, Fla., offer these examples of common diagnoses and ICD-9 codes associated with endoscopic sinus surgery: "It seems that endoscopic sinus surgery is becoming more prevalent," Embich says. "Fortunately, the surgery helps many people. But patients should also understand that having sinus surgery isn't guaranteed to stop their problems forever."