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    OpenPayerBilling CodesDiagnostic Radiology (Diagnostic Imaging) Procedures of the Lower ExtremitiesCPT cpt-73564-knee-radiographs-four-or-more-views
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    CPT 73564: Knee X‑Ray, Four or More Views

    Medicare pays $34 on average nationally for this procedure.

    CPT code 73564 describes radiographic imaging of the knee with four or more views to evaluate for fracture, swelling, or sources of knee pain; the service is an x‑ray diagnostic exam typically performed in hospital radiology departments, outpatient imaging centers, or emergency departments when multi‑view assessment of the knee joint is needed.

    For related coverage guidance, see recent payer policy updates: Shoulder Arthroplasty (Total, Partial, Reverse, Revision and Resurfacing), Hip Arthroplasty (partial and total hip replacement), Artificial Lumbar Intervertebral Disc (Lumbar Total Disc Arthroplasty).

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    Clinical & Coding Specifications

    Clinical Context

    A 32-year-old patient presents to an urgent care clinic after twisting the right knee while playing soccer and reports immediate pain, swelling, and difficulty bearing weight. The clinician performs a focused musculoskeletal exam noting focal tenderness along the joint line and limited range of motion. To evaluate for fracture, acute effusion, or other bony abnormality, the provider orders a radiographic examination of the knee with four or more views. The patient is positioned on an X-ray table or upright in the radiology suite; typical views include anteroposterior (AP), lateral, sunrise (patellofemoral), and tunnel (intercondylar) projections. The technologist documents laterality; images are acquired and submitted to the interpreting provider (radiologist or orthopedic surgeon). The imaging report documents findings such as fracture, dislocation, joint effusion, degenerative changes, or soft-tissue swelling. Billing is submitted using 73564 for a complete knee radiographic series of four or more views. Typical site of service is an outpatient radiology department, urgent care center, or hospital emergency department.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    73030Radiologic examination, shoulder; complete, minimum of two viewsMay be ordered when shoulder trauma is part of a multi-site extremity exam; analogous complete-series code for another joint
    73110Radiologic examination, elbow; complete, minimum of two viewsNearby extremity radiograph sometimes ordered when mechanism suggests multi-joint injury
    73610Radiologic examination, ankle; complete, minimum of three viewsCommonly performed alongside knee imaging in lower-extremity trauma evaluations
    73718MRI, lower extremity joint without contrastPerformed when radiographs are nondiagnostic and soft-tissue or ligamentous injury is suspected after initial 73564
    73000Radiologic exam, clavicle; single viewExample of other plain-film codes used in multi-trauma evaluations
    73560Radiologic examination, knee; 1 or 2 viewsUsed when fewer-than-four views are clinically appropriate; contrasts with 73564 which is four or more views

    Related Modifiers

    10 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    77Modifier 77 indicates that a previously performed procedure or service was legitimately repeated by a different physician or other qualified health care professional. The AMA’s CPT definition…- Use modifier 77 when a basic procedure or service already performed is repeated by a different physician or other qualified health care professional (for example, a second provider independently…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207P00000XEmergency Medicine PhysicianAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospit…
    207RR0500XRheumatology PhysicianAn internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, comm…
    261QP2000XPhysical Therapy Clinic/CenterAn entity, facility, or distinct part of a facility providing diagnostic and treatment services related to physical rehabilitation. Physical therapy i…
    252Y00000XEarly Intervention Provider AgencyEarly intervention services are an effective way to address the needs of infants and toddlers who have developmental delays or disabilities. The servi…
    103TC1900XCounseling PsychologistA psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at…
    207YX0901XOtology & Neurotology PhysicianAn otolaryngologist who treats diseases of the ear and temporal bone, including disorders of hearing and balance. The additional training in otology a…
    283XC2000XChildren's Rehabilitation HospitalHospitals · Rehabilitation Hospital
    111NX0100XOccupational Health ChiropractorOccupational Health is that specialty within the chiropractic profession that deals with the prevention and management of work related injuries. It al…

    Related Payer Policy Updates

    Specialty: Orthopedics/Musculoskeletal1 / 4

    10 rows

    PolicyPayerEffective Date
    Shoulder Arthroplasty (Total, Partial, Reverse, Revision and Resurfacing)univerahealthcare2026-10-15
    Hip Arthroplasty (partial and total hip replacement)univerahealthcare2026-10-15
    Artificial Lumbar Intervertebral Disc (Lumbar Total Disc Arthroplasty)univerahealthcare2026-10-15
    Osteochondral Grafting of the Kneeuniverahealthcare2026-10-15
    Metal-on-Metal Total Hip Resurfacinguniverahealthcare2026-10-15
    Lumbar Fusion (arthrodesis) with decompressionuniverahealthcare2026-10-15
    Sacroiliac Joint Fusion or Stabilizationuniverahealthcare2026-10-15
    Percutaneous Vertebroplasty/Mechanical Vertebral Augmentation and Percutaneous Sacroplastyuniverahealthcare2026-10-15
    Autologous Chondrocyte Implantation (ACI)univerahealthcare2026-10-15
    Shoulder Open ProceduresPremera Bluecross2026-09-04

    Related Codes

    CPT-73501-SINGLE-VIEW-HIP-XRAY

    CPT 73501: Single-View Hip Radiograph

    CPT-73502-HIP-XRAY-TWO-THREE-PROJECTIONS

    CPT 73502: Hip X‑ray, Two or Three Views (Single Hip)

    CPT-73503-HIP-XRAY-MULTIPLE-PROJECTIONS-UNILATERAL

    CPT 73503: Radiography, Hip, Minimum 4 Projections

    CPT-73521-BILATERAL-HIP-X-RAY-TWO-VIEWS

    CPT 73521: Bilateral Hip X‑Ray, Two Views

    CPT-73522-BILATERAL-HIP-X-RAYS-MULTIPLE-PROJECTIONS

    CPT 73522: Bilateral Hip X‑ray, Three to Four Views

    CPT-73523-BILATERAL-HIP-X-RAYS-MULTI-VIEW

    CPT 73523: Bilateral Hip X‑rays, Multiple Projections

    CPT-73525-HIP-ARTHROGRAPHY-IMAGING-SUPERVISION-INTERPRETATION

    CPT 73525: Hip Arthrography Imaging Supervision and Interpretation

    CPT-73551-SINGLE-VIEW-FEMUR-X-RAY

    CPT 73551: Single-Projection Femur X-Ray

    CPT-73552-FEMUR-XRAY-TWO-PROJECTIONS

    CPT 73552: Femur X‑ray, Minimum Two Projections

    CPT-73560-KNEE-XRAY-ONE-OR-TWO-VIEWS

    CPT 73560: Knee X‑Ray, One or Two Views

    Showing 1–10 of 33

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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