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CPT 27369: Knee Contrast Injection for Arthrography

CPT code 27369 denotes injection of contrast into the knee joint to facilitate contrast knee arthrography or contrast-enhanced CT/MRI arthrography. This imaging-adjunct procedure improves visualization of intra-articular structures—cartilage, ligaments, menisci, and adjacent bone—helping to diagnose tears, degenerative changes, and sources of unexplained pain. The code is relevant nationally as demand for advanced joint imaging grows with an aging population and musculoskeletal injury rates.

Key payers included in the discussion are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of clinical context for the service, typical sites of service, and common billing considerations tied to contrast arthrography. The publication outlines expected use cases for CPT code 27369, summarizes payer coverage patterns and reimbursement benchmarks where available, and highlights policy and documentation points that affect coding and claims adjudication. The guide is intended for clinicians, coding professionals, and payers seeking a clear national perspective on the role and administrative handling of contrast knee arthrography injections.

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Billing Code Overview

CPT code 27369 describes intra-articular injection of contrast material into the knee joint prior to contrast knee arthrography or contrast-enhanced CT or MRI knee arthrography. The procedure is performed to enhance visualization of internal knee structures such as cartilage, ligaments, and subchondral bone to assist in diagnosing joint conditions and unexplained knee pain.

Service type: Image-guided diagnostic contrast injection for knee arthrography.

Typical site of service: Outpatient radiology suites, ambulatory imaging centers, or hospital outpatient departments where CT or MRI arthrography is performed.

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CPT 27369: Knee Contrast Injection for Arthrography

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Billing Code Overview

Service type: Image-guided diagnostic contrast injection for knee arthrography.

Typical site of service: Outpatient radiology suites, ambulatory imaging centers, or hospital outpatient departments where CT or MRI arthrography is performed.

Clinical & Coding Specifications

Clinical Context

A 46-year-old patient presents with persistent unilateral knee pain, intermittent effusion, and suspicion for internal derangement after a twisting injury. Physical exam shows joint line tenderness and limited range of motion. Plain radiographs are nondiagnostic for meniscal or ligamentous injury. The orthopedic surgeon schedules contrast knee arthrography with intra-articular injection of contrast material to enhance MRI visualization of articular cartilage, menisci, cruciate and collateral ligaments, and joint capsule. The procedure is performed in an outpatient radiology suite or ambulatory surgery center. Under sterile technique and local anesthesia, the provider inserts a needle into the knee joint under fluoroscopic or ultrasound guidance, confirms intra-articular placement with aspiration or small test injectate, then injects dilute iodinated or gadolinium-based contrast prior to MRI or CT arthrography. Post-procedure imaging is obtained and the patient is observed briefly for adverse reactions before discharge with activity and wound care instructions.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician interpretation for the imaging study that follows arthrography when the technical component is billed separately.
`50`	Bilateral procedure	Use when the contrast injection is performed on both knees during the same session.
`51`	Multiple procedures	Use when arthrography injection is billed with other distinct procedures during the same encounter.
`52`	Reduced services	Use when the injection service is partially reduced or not fully performed as described.
`53`	Discontinued procedure	Use when the injection is attempted but discontinued due to unforeseen circumstances prior to completion.
`59`	Distinct procedural service	Use to indicate the injection is a distinct procedural service separate from another procedure on the same day (e.g., diagnostic arthroscopy).
`62`	Two surgeons	Use when two surgeons work together as primary surgeons during a complex procedure that includes intra-articular injection.
`73`	Discontinued outpatient hospital/ambulatory surgery	Use when the planned outpatient injection is discontinued after the patient is prepared but before anesthesia or the procedure begins.
`78`	Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period	Use if the patient returns to the procedure room for repeat injection or image-guided intervention related to the initial arthrography.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when the injection is unrelated to the postoperative course of a prior surgery.
`LT`	Left side	Use to identify the left knee injection.
`RT`	Right side	Use to identify the right knee injection.
`QX`	Clinical social worker modifier (when applicable)	Not typically applicable; included only if an auxiliary qualified health professional bills a portion of the service under supervision per payer rules.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Use if an assistant from these categories performs qualifying portion of the service per payor policy.

Taxonomy Code	Specialty	Notes
208000000X	Orthopedic Surgery	Orthopedic surgeons commonly order or perform arthrography procedures and interpret resulting imaging.
2086S0102X	Sports Medicine	Sports medicine specialists evaluate internal derangements and may perform or coordinate arthrography.
207R00000X	Radiology	Interventional and diagnostic radiologists perform image-guided intra-articular injections and interpret arthrographic studies.
363A00000X	Physical Medicine & Rehabilitation	PM&R physicians may perform diagnostic joint injections in workup of joint pain prior to advanced imaging.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M23.2`	Derangement of meniscus due to old tear or injury	Arthrography helps delineate meniscal tears not seen on plain radiographs and can aid surgical planning.
`M23.5`	Chronic instability of knee	Contrast arthrography can assess ligament integrity and internal derangement contributing to instability.
`M17.0`	Bilateral primary osteoarthritis of knee	Arthrography may be used to evaluate cartilage loss and internal joint structures when symptoms are atypical.
`S83.2`	Tear of meniscus, current injury	Direct visualization with arthrographic contrast enhances detection of acute meniscal tears prior to intervention.
`M25.56`	Pain in knee	Unexplained knee pain is a common indication for diagnostic arthrography when other imaging is inconclusive.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`20610`	Arthrocentesis, aspiration and/or injection; major joint or bursa (e.g., shoulder, hip, knee)	May be performed prior to or instead of arthrography for therapeutic aspiration or injection; technique is similar for intra-articular needle placement.
`77002`	Fluoroscopic guidance for needle placement (e.g., localization of needle or catheter tip for aspiration, injection) (non-vascular); also used for guidance during arthrography	Used when fluoroscopic guidance is employed to place the intra-articular needle for contrast injection.
`76937`	Ultrasound guidance for needle placement (e.g., biopsy, aspiration, injection)	Used when ultrasound guidance is used for precise intra-articular needle placement during injection.
`73721`	Magnetic resonance (MRI) of lower extremity joint without contrast, with or without contrast; single joint, e.g., knee — (Note: arthrography-specific MRI codes vary)	MRI arthrography is the imaging study obtained after intra-articular contrast injection; the MRI code documents the imaging evaluation.
`72192`	Computed tomography, pelvis/hip, with contrast (for CT knee arthrography, CT extremity codes may be used as applicable)	CT arthrography may follow the intra-articular contrast injection; CT codes capture the cross-sectional imaging component.

Related Codes

CPT-27372-MUSCLE-FOREIGN-BODY-REMOVAL

CPT 27372: Removal of Foreign Body From Muscle, Below Fascia

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

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Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician interpretation for the imaging study that follows arthrography when the technical component is billed separately.
`50`	Bilateral procedure	Use when the contrast injection is performed on both knees during the same session.
`51`	Multiple procedures	Use when arthrography injection is billed with other distinct procedures during the same encounter.
`52`	Reduced services	Use when the injection service is partially reduced or not fully performed as described.
`53`	Discontinued procedure	Use when the injection is attempted but discontinued due to unforeseen circumstances prior to completion.
`59`	Distinct procedural service	Use to indicate the injection is a distinct procedural service separate from another procedure on the same day (e.g., diagnostic arthroscopy).
`62`	Two surgeons	Use when two surgeons work together as primary surgeons during a complex procedure that includes intra-articular injection.
`73`	Discontinued outpatient hospital/ambulatory surgery	Use when the planned outpatient injection is discontinued after the patient is prepared but before anesthesia or the procedure begins.
`78`	Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period	Use if the patient returns to the procedure room for repeat injection or image-guided intervention related to the initial arthrography.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when the injection is unrelated to the postoperative course of a prior surgery.
`LT`	Left side	Use to identify the left knee injection.
`RT`	Right side	Use to identify the right knee injection.
`QX`	Clinical social worker modifier (when applicable)	Not typically applicable; included only if an auxiliary qualified health professional bills a portion of the service under supervision per payer rules.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Use if an assistant from these categories performs qualifying portion of the service per payor policy.

Taxonomy Code	Specialty	Notes
208000000X	Orthopedic Surgery	Orthopedic surgeons commonly order or perform arthrography procedures and interpret resulting imaging.
2086S0102X	Sports Medicine	Sports medicine specialists evaluate internal derangements and may perform or coordinate arthrography.
207R00000X	Radiology	Interventional and diagnostic radiologists perform image-guided intra-articular injections and interpret arthrographic studies.
363A00000X	Physical Medicine & Rehabilitation	PM&R physicians may perform diagnostic joint injections in workup of joint pain prior to advanced imaging.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M23.2`	Derangement of meniscus due to old tear or injury	Arthrography helps delineate meniscal tears not seen on plain radiographs and can aid surgical planning.
`M23.5`	Chronic instability of knee	Contrast arthrography can assess ligament integrity and internal derangement contributing to instability.
`M17.0`	Bilateral primary osteoarthritis of knee	Arthrography may be used to evaluate cartilage loss and internal joint structures when symptoms are atypical.
`S83.2`	Tear of meniscus, current injury	Direct visualization with arthrographic contrast enhances detection of acute meniscal tears prior to intervention.
`M25.56`	Pain in knee	Unexplained knee pain is a common indication for diagnostic arthrography when other imaging is inconclusive.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`20610`	Arthrocentesis, aspiration and/or injection; major joint or bursa (e.g., shoulder, hip, knee)	May be performed prior to or instead of arthrography for therapeutic aspiration or injection; technique is similar for intra-articular needle placement.
`77002`	Fluoroscopic guidance for needle placement (e.g., localization of needle or catheter tip for aspiration, injection) (non-vascular); also used for guidance during arthrography	Used when fluoroscopic guidance is employed to place the intra-articular needle for contrast injection.
`76937`	Ultrasound guidance for needle placement (e.g., biopsy, aspiration, injection)	Used when ultrasound guidance is used for precise intra-articular needle placement during injection.
`73721`	Magnetic resonance (MRI) of lower extremity joint without contrast, with or without contrast; single joint, e.g., knee — (Note: arthrography-specific MRI codes vary)	MRI arthrography is the imaging study obtained after intra-articular contrast injection; the MRI code documents the imaging evaluation.
`72192`	Computed tomography, pelvis/hip, with contrast (for CT knee arthrography, CT extremity codes may be used as applicable)	CT arthrography may follow the intra-articular contrast injection; CT codes capture the cross-sectional imaging component.

Related Codes

CPT-27372-MUSCLE-FOREIGN-BODY-REMOVAL

CPT 27372: Removal of Foreign Body From Muscle, Below Fascia

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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CPT 27369: Knee Contrast Injection for Arthrography

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Billing Code Overview

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CPT 27369: Knee Contrast Injection for Arthrography

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References