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CPT 20552: Trigger Point Injection, One or Two Muscles
CPT code 20552 designates a trigger point injection (TPI), a targeted injection of an anesthetic or corticosteroid into a painful muscle knot to relieve myofascial pain. Nationally, TPIs are commonly used across primary care, physical medicine, sports medicine, and pain management practices to address localized muscle pain, cervicogenic symptoms, and myofascial trigger points that impair function. CPT code 20552 is an important ambulatory procedure code because it distinguishes injections into one or two muscles from more extensive trigger point procedures, which can affect billing, coverage decisions, and utilization patterns.
Key payers in this analysis include Aetna; Blue Cross Blue Shield; Cigna Health; United Healthcare; and Medicare. Readers will find a concise overview of clinical context for the code, common service settings, typical associated diagnoses such as myalgia and cervicalgia, adjacent procedural codes used in coding workflows, and the list of payers covered. The report highlights areas that commonly affect coding and billing workflows — such as code-to-service mapping and related procedures — and provides benchmarks and policy-relevant context where available. Data not available in the input is noted explicitly. This summary is intended for national audiences involved in coding, revenue cycle, clinical practice management, and policy oversight.
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Billing Code Overview
CPT code 20552 describes a trigger point injection (TPI), a procedure in which an anesthetic or corticosteroid is injected into a painful muscle knot (trigger point) to provide pain relief and reduce localized muscle spasm. This service is typically categorized as an injection procedure for myofascial pain.
Service type: Procedure — trigger point injection
Typical site of service: Outpatient clinic or physician office, ambulatory surgical center, or other outpatient setting such as a sports medicine or physical medicine clinic
National Reimbursement Benchmarks
Medicare’s average rate for CPT 20552 is $53.30, while BUCA’s mean commercial rate sits at $261.20, indicating BUCA pays roughly $207.90 more on average than Medicare. This gap highlights a substantial divergence between a large public payer and a representative commercial benchmark, with implications for overall market positioning and expected cash collections where commercial plans dominate.
Dispersion (P75 minus P25) varies notably: Blue Cross Blue Shield shows the widest spread at $147.20 (P75 $494.40 minus P25 $347.20), followed by UnitedHealth Group with a range of $48.40 (P75 $106.20 minus P25 $53.80). Aetna is relatively tight with a range of $37.10, and Cigna’s interquartile range is $46.20. BUCA’s interquartile spread is $103.50 and Medicare’s IQR is $5.00, making Medicare the tightest and Blue Cross Blue Shield the most dispersed payer.