Summary & Overview
CPT 64474: Continuous Infusion for Unilateral Lower Extremity Fascial Plane Block
CPT code 64474 covers the placement and management of a continuous infusion catheter for a unilateral lower extremity fascial plane block, including any imaging guidance performed. This code is important nationally because continuous peripheral regional anesthesia is increasingly used to provide targeted postoperative and acute pain control while reducing reliance on systemic opioids and facilitating rehabilitation. Payers commonly addressing coverage and payment policy for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise clinical and billing overview of the procedure, typical sites of service, and how major payers approach coverage. The publication summarizes common coding practice, associated service lines, and the clinical context in which continuous lower extremity fascial plane infusions are used. It also identifies benchmarks and policy considerations relevant to reimbursement, claim documentation, and utilization management. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 64474 describes the placement of a continuous infusion catheter for a unilateral lower extremity fascial plane block to provide sustained pain relief in the leg. The code includes any imaging guidance performed as part of the procedure.
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Service type: Continuous regional anesthesia infusion (peripheral nerve/fascial plane catheter infusion)
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Typical site of service: Hospital inpatient unit, hospital outpatient department, ambulatory surgery center, or other procedural setting where regional anesthesia and imaging guidance are available.
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient presents postoperatively after an open tibial fracture fixation with escalating unilateral left lower-extremity pain inadequately controlled with oral opioids and multimodal analgesia. The orthopedic surgeon and acute pain service determine a continuous peripheral nerve or fascial plane infusion is indicated for prolonged analgesia to facilitate physical therapy, reduce systemic opioid requirements, and improve functional recovery. The patient is positioned supine; the anesthesiologist or regional anesthesia specialist performs aseptic preparation, uses ultrasound (and fluoroscopy if required) for imaging guidance to identify the femoral or adductor canal/fascia iliaca plane, places a perineural or fascial catheter, confirms catheter tip position with aspiration and test dose, and initiates a continuous local anesthetic infusion through an infusion pump. Documentation includes laterality, catheter insertion site, imaging guidance used, type/concentration and rate of local anesthetic, infusion pump settings, catheter dwell time plan, and pain scores. Typical monitoring includes neurovascular checks, sedation and respiratory status assessment, and education for home infusion if discharged with catheter and pump. Typical site of service is an inpatient postoperative recovery unit, acute pain service consult setting, ambulatory surgical center, or hospital procedural area depending on clinical context and catheter placement timing.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
50 | Bilateral Procedure |