Physical Medicine & Rehab: CPT Codes for Outpatient and ASC Billing
Physical Medicine and Rehabilitation (PM&R or physiatry) restores function for patients with musculoskeletal, neuromuscular, and pain conditions. Much of a physiatrist's procedural work is image-guided and palpation-guided injections into joints, bursae, tendons, and muscles, plus electrodiagnostic studies of nerve and muscle function.
The relevant CPT families cluster in two areas: the musculoskeletal injection range 20550 through 20611, and the 95900-series electromyography and nerve conduction codes. Frequently reported examples include 20610 (drain or inject a major joint or bursa without ultrasound guidance) and 20552 (injection of one or two trigger points). When a physiatrist works inside an ASC, codes on Addendum AA are on the ASC Covered Procedures List that Medicare pays in an ASC, while codes on Addendum EE are excluded from ASC payment.
Physical Medicine & Rehab codes(11)
- 20610Drain/inj joint/bursa w/o us
- 20550Njx 1 tendon sheath/ligament
- 20553Njx 1/mlt trigger points 3/>
- 20551Njx 1 tendon origin/insj
- 20552Njx 1/mlt trigger point 1/2
- 20555Place ndl musc/tis for rt
- 20600Drain/inj joint/bursa w/o us
- 20604Drain/inj joint/bursa w/us
- 20605Drain/inj joint/bursa w/o us
- 20606Drain/inj joint/bursa w/us
- 20611Drain/inj joint/bursa w/us
Are PM&R procedures done in an ASC or in the office?
Most physical medicine and rehabilitation procedures, including joint, tendon, and trigger point injections, are performed in the office or an office-based lab, so the primary place of service is 11 (office). Some procedures are done in an Ambulatory Surgery Center. When they are, Medicare coverage follows the CMS addenda: Addendum AA codes are on the ASC Covered Procedures List, Addendum BB are covered ancillary services, and Addendum EE codes are excluded from ASC payment.
What CPT codes does PM&R use most often?
PM&R relies heavily on the musculoskeletal injection range 20550 through 20611 and the 95900-series electrodiagnostic codes. Common examples include 20610 for draining or injecting a major joint or bursa without ultrasound guidance, 20550 for a tendon sheath or ligament injection, 20551 for a tendon origin or insertion injection, and 20552 for one or two trigger point injections. Electromyography and nerve conduction studies round out the electrodiagnostic side of the specialty.
How are trigger point injections coded?
Trigger point injections are reported by the number of muscles treated rather than the number of injections or needle passes. Code 20552 covers injection into one or two muscles. Documentation should record which muscles were injected and the substance used. DataLily's procedure library tracks CPT-specific prior-authorization and documentation requirements so coding teams can confirm payer expectations before the claim goes out.