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Across 2. Modifier ______ is used to indicate that services of an outside laboratory were used. 3. The implantation of a patient-activated cardiac event recorder. 6. Scar revision of amputation site lower right arm (ulna and radius). 7. Open treatment of a hip fracture of proximal neck with prosthetic femoral hip replacement. 9. What modifier would you use if you were coding only for the professional component of a diagnostic procedure? 13. Echocardiogram, transthoracic—complete study with color-flow Doppler and echocardiography. 14. Surgical arthroscopy of the shoulder, rotator cuff repair. 15. Endoscopic segmental lobectomy. 16. What modifier would you use if you were coding only the technical component of a diagnostic procedure? 17. Simple excision of a nasal polyp.

Down 1. Duplex scan of aorta, complete study. 4. Closed treatment of hip dislocation, status post hip arthroplasty, without anesthesia. 5. Arthroscopic medial meniscus repair. 6. Trigger finger release. 8. Total knee replacement (arthroplasty) for the treatment of severe osteoarthritis. 10. Which modifier would you use if polyps were removed from both the left and the right sides of the nose? 11. Removal of a lung cyst by major thoracotomy. 12. Pleural biopsy by percutaneous needle. 13. An in-person electronic analysis of a dual chamber pacemaker system with reprogramming.