Need help choosing the right code?
Ask CasePilot about procedures, modifiers, bundling, and coding guidance.
Try CasePilot© Copyright 2026 American Medical Association. All rights reserved.
A radiologic examination of the knee, specifically coded as CPT® Code 73565, involves imaging both knees while the patient is in a standing position, capturing anteroposterior (AP) views. This procedure utilizes X-ray technology, which employs indirect ionizing radiation to create images of the internal structures of the body. The X-ray process is effective on non-uniform materials, such as human tissue, due to the varying densities and compositions of the tissues involved. As X-rays pass through the body, some are absorbed while others are transmitted, resulting in a two-dimensional image that reveals the femur, tibia, fibula, patella, and surrounding soft tissues of the knee. The primary purpose of this examination is to investigate potential causes of knee-related symptoms such as pain, limping, or swelling. It is also instrumental in diagnosing various conditions, including fractures, dislocations, deformities, degenerative diseases, osteomyelitis, arthritis, foreign bodies, and cysts or tumors. Additionally, knee X-rays can be utilized to assess the alignment of lower extremity bones after fracture treatment. Standard imaging views for knee examinations include the anteroposterior (AP) view, lateral view (side), and posteroanterior (PA) view, with variations that may involve different flexion angles of the joint and consideration of weight-bearing versus non-weight-bearing positions. The specific code 73565 is designated for a weight-bearing X-ray examination of both knees, taken from front to back on a single film, distinguishing it from other codes that represent different views or configurations of knee imaging.
© Copyright 2026 Coding Ahead. All rights reserved.
The radiologic examination of the knee, specifically CPT® Code 73565, is indicated for various clinical scenarios. The following conditions or symptoms may warrant this procedure:
The procedure for CPT® Code 73565 involves several key steps to ensure accurate imaging of both knees in a standing position. The following outlines the procedural steps:
After the radiologic examination is completed, there are several considerations for post-procedure care. Patients may be advised to wait briefly while the images are reviewed for quality. If any issues arise with the images, the technologist may need to retake them. Generally, there are no specific restrictions or recovery protocols following a knee X-ray, as it is a non-invasive procedure. Patients can typically resume their normal activities immediately after the examination. However, it is essential for the physician to review the results and discuss any necessary follow-up actions or treatments based on the findings of the X-ray.
| Short Descr | X-RAY EXAM OF KNEES | Medium Descr | RADIOLOGIC EXAM BOTH KNEES STANDING ANTEROPOST | Long Descr | Radiologic examination, knee; both knees, standing, anteroposterior | Status Code | Active Code | Global Days | XXX - Global Concept Does Not Apply | PC/TC Indicator (26, TC) | 1 - Diagnostic Tests for Radiology Services | Multiple Procedures (51) | 0 - No payment adjustment rules for multiple procedures apply. | Bilateral Surgery (50) | 2 - 150% payment adjustment does NOT apply. | Physician Supervisions | 09 - Concept does not apply. | Assistant Surgeon (80, 82) | 0 - Payment restriction for assistants at surgery applies to this procedure... | Co-Surgeons (62) | 0 - Co-surgeons not permitted for this procedure. | Team Surgery (66) | 0 - Team surgeons not permitted for this procedure. | Diagnostic Imaging Family | 99 - Concept Does Not Apply | APC Status Indicator | STV-Packaged Codes | ASC Payment Indicator | Packaged service/item; no separate payment made. | Type of Service (TOS) | 4 - Diagnostic Radiology | Berenson-Eggers TOS (BETOS) | I1B - Standard imaging - musculoskeletal | MUE | 1 | CCS Clinical Classification | 226 - Other diagnostic radiology and related techniques |
| 26 | Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number. | TC | Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles | 59 | Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25. | X5 | Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician | FY | X-ray taken using computed radiography technology/cassette-based imaging | LT | Left side (used to identify procedures performed on the left side of the body) | FX | X-ray taken using film | RT | Right side (used to identify procedures performed on the right side of the body) | GW | Service not related to the hospice patient's terminal condition | XU | Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service | 77 | Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service. | GC | This service has been performed in part by a resident under the direction of a teaching physician | GA | Waiver of liability statement issued as required by payer policy, individual case | Q6 | Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area | 76 | Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service. | 50 | Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d). | 52 | Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use). | 79 | Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.) | AK | Non participating physician | AQ | Physician providing a service in an unlisted health professional shortage area (hpsa) | CC | Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed) | CR | Catastrophe/disaster related | GP | Services delivered under an outpatient physical therapy plan of care | GV | Attending physician not employed or paid under arrangement by the patient's hospice provider | GY | Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit | GZ | Item or service expected to be denied as not reasonable and necessary | MA | Ordering professional is not required to consult a clinical decision support mechanism due to service being rendered to a patient with a suspected or confirmed emergency medical condition | MH | Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider | PD | Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days | Q1 | Routine clinical service provided in a clinical research study that is in an approved clinical research study | X1 | Continuous/broad services: for reporting services by clinicians, who provide the principal care for a patient, with no planned endpoint of the relationship; services in this category represent comprehensive care, dealing with the entire scope of patient problems, either directly or in a care coordination role; reporting clinician service examples include, but are not limited to: primary care, and clinicians providing comprehensive care to patients in addition to specialty care | X2 | Continuous/focused services: for reporting services by clinicians whose expertise is needed for the ongoing management of a chronic disease or a condition that needs to be managed and followed with no planned endpoint to the relationship; reporting clinician service examples include but are not limited to: a rheumatologist taking care of the patient's rheumatoid arthritis longitudinally but not providing general primary care services | X4 | Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period | XE | Separate encounter, a service that is distinct because it occurred during a separate encounter | XP | Separate practitioner, a service that is distinct because it was performed by a different practitioner | XS | Separate structure, a service that is distinct because it was performed on a separate organ/structure |
|
Date
|
Action
|
Notes
|
|---|---|---|
| 1991-01-01 | Added | First appearance in code book in 1991. |
Get instant expert-level medical coding assistance.