American Health Information Management Association (AHIMA) Certification Practice Exam

What are the appropriate ICD-9-CM diagnosis codes for right and left bundle branch block?

1. 426.3, 426.4

2. 426.53

3. 426.4, 426.53

4. 426.52

The correct answer is: 426.53

The correct choice for ICD-9-CM diagnosis codes for right and left bundle branch block is represented by the single code 426.53. This code specifically denotes incomplete right bundle branch block, which is a condition related to the conduction pathway of the heart. In the context provided, there is no indication that both types (right and left) are represented separately because the question seems to focus on the codes pertaining to bundle branch blocks broadly rather than differentiating between the two. Each of the other options suggests multiple codes or combinations that imply the need to report both conditions or a different condition altogether. However, the quest for a succinct representation of bundle branch block in this case leads directly to the singular and specific code for incomplete right bundle branch block. This choice reflects the coding practice of using the most precise and applicable code rather than overcrowding the diagnosis with multiple entries that could lead to misunderstandings in clinical documentation.