Piriformis Muscle Injection

Question:

We perform Piriformis muscle injections in the office under ultrasound guidance, what code should we be reporting for this service? 

Answer:

The correct code(s) that should be reported for the service are 20552 for the piriformis muscle injection and 76942 for the ultrasound guidance. 

Rationale: Per CPT Assistant April 2012  

There is a significant difference in the work and procedure, as well as intent, between an injection of the piriformis muscle and the perineural injection of the sciatic nerve. The sciatic nerve injection code (64445) should not be used to report a piriformis injection. Piriformis muscle injection(s) should be reported using CPT code 20552, Injection(s); single or multiple trigger point(s), 1 or 2 muscle(s). 

*This response is based on the best information available as of 3/28/24.