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Official Description

Injection procedure for contrast knee arthrography or contrast enhanced CT/MRI knee arthrography

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27369 involves the injection of a contrast agent into the knee joint for the purpose of enhancing imaging studies, specifically knee arthrography or contrast-enhanced CT/MRI knee arthrography. Knee arthrography is a diagnostic imaging technique that allows for detailed visualization of the soft tissues within the knee joint, including ligaments, cartilage, and synovial fluid. The process begins with the cleansing of the skin over the injection site to minimize the risk of infection. A local anesthetic is then administered to numb the area, ensuring patient comfort during the procedure. Following this, a needle is carefully inserted into the joint space, typically under the guidance of imaging techniques such as X-ray, ultrasound, or CT, to ensure accurate placement. Once the needle is correctly positioned, a radiopaque contrast agent is injected into the knee joint. This contrast agent is crucial for enhancing the visibility of the joint structures during imaging. The specific type of contrast used may vary depending on the imaging modality; for X-ray-based arthrograms, iodinated contrast is commonly used, while MRI procedures typically utilize a dilute solution of gadolinium chelates mixed with sterile saline. After the contrast is injected, the knee is moved through flexion and extension to facilitate even distribution of the contrast agent within the joint. Finally, radiographic images are obtained to assess the joint's condition, which can provide valuable information for diagnosis and treatment planning.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The injection procedure for contrast knee arthrography or contrast-enhanced CT/MRI knee arthrography is indicated for various clinical scenarios where detailed visualization of the knee joint is necessary. The following conditions may warrant this procedure:

  • Joint Pain Persistent or unexplained knee pain that may be due to underlying soft tissue injuries or degenerative changes.
  • Joint Instability Suspected ligament tears or instability that require further evaluation to determine the extent of injury.
  • Cartilage Damage Assessment of potential cartilage lesions or damage that may not be visible on standard X-rays.
  • Synovial Disease Evaluation of conditions affecting the synovial membrane, such as synovitis or other inflammatory processes.
  • Preoperative Assessment Detailed imaging prior to surgical intervention to better plan for procedures such as arthroscopy or joint reconstruction.

2. Procedure

The procedure for contrast knee arthrography or contrast-enhanced CT/MRI knee arthrography involves several key steps to ensure accurate imaging and patient safety. The following outlines the procedural steps:

  • Step 1: Preparation The patient is positioned comfortably, and the skin over the knee joint is thoroughly cleansed with an antiseptic solution to reduce the risk of infection. A sterile field is established to maintain cleanliness throughout the procedure.
  • Step 2: Anesthesia A local anesthetic is injected into the area surrounding the knee joint to numb the site of the injection. This step is crucial for minimizing discomfort during the procedure.
  • Step 3: Needle Insertion Under the guidance of imaging techniques such as X-ray, ultrasound, or CT, a needle is carefully inserted into the knee joint. The use of radiographic guidance ensures that the needle is accurately placed within the joint space.
  • Step 4: Contrast Injection Once the needle placement is confirmed, a radiopaque contrast agent is injected into the knee joint. The type of contrast agent used will depend on the imaging modality; iodinated contrast is typically used for X-ray-based procedures, while gadolinium chelates are used for MRI.
  • Step 5: Joint Movement After the contrast agent is injected, the knee is moved through flexion and extension to help distribute the contrast evenly throughout the joint space. This movement is essential for optimal imaging results.
  • Step 6: Imaging Following the distribution of the contrast agent, radiographic images are obtained. These images are crucial for evaluating the internal structures of the knee joint and diagnosing any potential issues.

3. Post-Procedure

After the completion of the contrast knee arthrography or contrast-enhanced CT/MRI knee arthrography, the patient may be monitored for a short period to ensure there are no immediate adverse reactions to the contrast agent. It is common for patients to experience mild discomfort or swelling at the injection site, which typically resolves quickly. Patients are usually advised to avoid strenuous activities for a short period following the procedure to allow for proper recovery. Additionally, any specific post-procedure instructions, such as hydration or monitoring for allergic reactions, should be provided to the patient. Follow-up imaging or consultations may be scheduled based on the findings from the arthrogram to discuss results and potential treatment options.

Short Descr NJX CNTRST KNE ARTHG/CT/MRI
Medium Descr NJX PX CNTRST KNE ARTHG CNTRST ENHNCD CT/MRI KNE
Long Descr Injection procedure for contrast knee arthrography or contrast enhanced CT/MRI knee arthrography
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 1 - Statutory 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 Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) none
MUE 1

This is a primary code that can be used with these additional add-on codes.

77002 CPT Add On MPFS Status: Active Code APC N ASC N1 Physician Quality Reporting CPT Assistant Article Fluoroscopic guidance for needle placement (eg, biopsy, aspiration, injection, localization device) (List separately in addition to code for primary procedure)
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
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.
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).
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
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
KX Requirements specified in the medical policy have been met
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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
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.
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) 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).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
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.
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.)
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
GW Service not related to the hospice patient's terminal condition
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
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
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
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2019-01-01 Added Added
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