Medical Coding Practice Test

When should the coder use a second code according to ICD-9-CM coding?

1. To simplify coding process

2. To enhance code description

3. To identify primary diagnosis

4. To fully describe a condition

The correct answer is: To fully describe a condition

In medical coding, the coder should use a second code to fully describe a condition. This means that sometimes a single code may not provide enough detail to accurately represent a patient's diagnosis or condition. By using a second code, the coder can provide a more comprehensive and detailed description of the condition, which is essential for accurate medical coding and billing. Options A, B, and C are not the correct choices because they do not highlight the primary reason for using a second code in medical coding. While simplifying the coding process, enhancing code description, and identifying the primary diagnosis are important aspects of medical coding, the primary reason for using a second code is to ensure that the coder can fully describe a condition.