Summary & Overview
CPT 73502: Hip X‑ray, Two or Three Projections
CPT code 73502 identifies a diagnostic X-ray exam of a single hip (left or right) taken from two or three projections. This commonly ordered radiography study is used to detect fractures, dislocations, swelling, degenerative change, and other causes of hip pain; it can also include the pelvis when clinically indicated. Nationally, hip radiography is a frequent initial imaging step in emergency, orthopedic, and primary care settings, making clear coding and coverage guidance important for billing consistency and clinical workflow.
Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage patterns, coding benchmarks, and common clinical contexts for ordering the study. Readers will find a concise explanation of the service elements captured by CPT code 73502, typical sites of service where the exam is performed, and a summary of commonly applied billing modifiers and service-line considerations (where available).
The report provides practical context for revenue cycle, compliance, and clinical teams: clarifying what the code represents, how it differs from related hip and pelvis imaging codes, and which clinical scenarios typically prompt use of CPT code 73502. Data not available in the input is noted where relevant.
Billing Code Overview
CPT code 73502 describes a diagnostic radiologic procedure consisting of X-ray imaging of a single hip (left or right) obtained from two or three projections. The exam evaluates for fracture, swelling, dislocation, or other causes of hip pain, and may include the pelvis when performed as part of the study.
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Service type: Diagnostic radiography of one hip, multi-projection
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Typical site of service: Imaging centers, hospital radiology departments, and outpatient orthopedic or emergency department radiology suites
Clinical & Coding Specifications
Clinical Context
A 72-year-old patient presents to the emergency department after a ground-level fall with acute left hip pain, inability to bear weight, and localized swelling. The ED clinician orders urgent diagnostic imaging. Radiology performs 73502 — X‑ray of one hip (left) with two or three projections — to evaluate for femoral neck or intertrochanteric fracture, assess joint space, and screen for acute dislocation or pelvic involvement. Images are acquired in standard AP and lateral or modified lateral projections. The radiologic technologist documents positioning and any patient limitations. The interpreting radiologist issues a report describing presence or absence of fracture, displacement, arthritic changes, heterotopic ossification, or other findings. Results are communicated to the ED team to guide orthopedic consultation, pain control, and disposition (admission, operative planning, or discharge with precautions). When clinically indicated, additional imaging (pelvis series, cross‑sectional CT) may be ordered based on 73502 findings or limited study due to patient inability to cooperate.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | When imaging is of the left hip |