How should injections given in a single tendon origin/insertion be billed?

The correct choice reflects the proper coding for injections administered into a single tendon origin or insertion. In this context, the code 20551 specifically refers to the injection of a substance into a single tendon sheath, which typically includes those cases where the injection is directed at the tendon origin or insertion site.

This code is distinct from others that apply to different scenarios. For example, 20550 is intended for injections into a single muscle group and is not applicable for tendon sites. Similarly, 20552 is used for multiple tendon origins/insertion sites, which is not relevant when only one is being treated. Lastly, 20553 pertains to the injection of any substance into a different anatomical area, such as a bursa, rather than a tendon origin or insertion.

Using the appropriate code ensures accurate billing and reflects the services provided, hence demonstrating the importance of specificity in coding practices.