Question: what is the difference between cpt code 20550 and 20551?
Answer: 20550: Injection(s), single tendon sheath. ... 20551: Injection(s), single tendon origin. As with 20550, it does not matter how many times the physician administers injections; report 20551 once. Be sure to note that the injection is into the origin, where the tendon connects to the muscle.