American Health Information Management Association (AHIMA) Certification Practice Exam

The correct ICD-9-CM procedure code for replacing an old dual pacemaker with a new one is 37.87. This code specifically refers to the repositioning of an existing dual chamber pacemaker, which includes both the generator and the leads. When dealing with pacemaker procedures, it's essential to understand that different codes are assigned based on the specific nature of the procedure performed, including whether it's a new placement, exchange, or replacement. The other codes mentioned relate to different scenarios. For instance, code 37.85 pertains to the insertion of a permanent pacemaker, while 37.89 represents other specified procedures on the heart and great vessels that do not specifically define the replacement of a pacemaker or lead. Thus, understanding the specificity of each code's description is crucial in correctly identifying and coding the procedure performed.