Summary & Overview
CPT 73551: Single-View Femur X-Ray, Diagnostic Radiograph
CPT code 73551 identifies a single-projection radiographic examination of the femur, commonly performed to diagnose fractures, swelling, or localized thigh pain. As a widely used diagnostic imaging code, it matters nationally because femur radiographs are a frontline tool in emergency, urgent care, and outpatient settings for acute musculoskeletal complaints. Accurate coding supports appropriate clinical documentation and claims processing across payers.
Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the code, typical sites of service, and the common payer landscape. The publication provides benchmarking context and policy-relevant details such as coverage considerations and billing practice patterns where available. It also highlights procedural characteristics that affect claims, such as the single-view nature of the study and typical clinical indications.
This national overview is intended for billing managers, radiology departments, and revenue cycle professionals who need clear, practice-focused information about CPT code 73551. Data not available in the input are noted where applicable.
Billing Code Overview
CPT code 73551 describes a diagnostic X-ray of the femur performed from a single projection. The procedure is used to evaluate suspected fractures, assess swelling, or investigate other causes of thigh pain.
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Service type: Diagnostic radiology — single-view femur radiograph
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Typical site of service: Hospital radiology department, outpatient imaging center, urgent care, or emergency department
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult who presents to the emergency department or outpatient radiology clinic after a fall, direct blow, or with progressive thigh pain and localized swelling. The patient reports inability to bear weight or has focal tenderness over the femoral shaft. The clinical workflow begins with triage and history/physical examination by a nurse or physician assistant, followed by an order for radiographic evaluation. Radiology staff obtain a single frontal or lateral projection of the femur using 73551. The technologist confirms patient identity and laterality (LT/RT), positions the patient, and acquires the image. Images are transmitted to the interpreting radiologist (or reporting provider) who reviews for fracture, cortical disruption, periosteal reaction, hardware integrity, or other pathology and issues a diagnostic report. Results are routed back to the ordering clinician for disposition, which may include orthopedic referral, advanced imaging, casting, or discharge with analgesia and activity modification.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT / RT | Left/Right anatomical modifiers |