What ICD-10-CM code is used to report effusion of the right ankle joint? a. M25.48 b. M25.571 c. M25.474 d. M25.471

To determine the correct ICD-10-CM code for effusion of the right ankle joint, let's analyze the provided options:

1. Understand the Codes:

   • M25.48: Other specified joint disorders, not elsewhere classified.
   • M25.571: Effusion, right ankle joint.
   • M25.474: Effusion, left ankle joint.
   • M25.471: Effusion, right ankle joint.

2. Identify the Right Code:

   • Since we are specifically looking for effusion of the right ankle joint, we need to select the code that accurately reflects that.

3. Correct Answer: The correct code is b. M25.571 for effusion of the right ankle joint.

In summary, the ICD-10-CM code for reporting effusion of the right ankle joint is M25.571.