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Official Description

Magnetic resonance (eg, proton) imaging, upper extremity, other than joint; without contrast material(s)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Magnetic resonance imaging (MRI) is a sophisticated imaging technique utilized to visualize the internal structures of the upper extremity, specifically the arm, excluding the joints. This non-invasive procedure leverages the magnetic properties of hydrogen atoms present in the body, allowing for detailed imaging without the use of ionizing radiation. During the MRI process, the patient is positioned on a motorized table that moves into a large cylindrical scanner, which houses a powerful magnet. The magnetic field generated by the scanner aligns the hydrogen atoms in the body. Subsequently, radiowaves are emitted within this magnetic field, causing the protons in various tissues to emit specific radiofrequency signals. These signals are captured and processed by a computer, which constructs high-resolution, three-dimensional images of the scanned area. The MRI of the upper extremity is particularly valuable for diagnosing a range of conditions, including injuries, trauma, or unexplained pain, as it provides clearer images of soft tissues compared to other imaging modalities like computed tomography (CT). In the context of CPT® Code 73218, the procedure is performed without the administration of contrast material, distinguishing it from other related codes that involve contrast agents. The resulting images are critical for physicians to assess various conditions such as tendinitis, muscle atrophy, soft tissue and bone lesions, osteomyelitis, contusions, hematomas, and fractures, thereby aiding in accurate diagnosis and treatment planning.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Magnetic resonance imaging of the upper extremity is indicated for a variety of clinical scenarios where detailed visualization of the arm's internal structures is necessary. The following conditions may warrant the use of this imaging technique:

  • Injury Assessment of soft tissue damage or bone fractures resulting from trauma.
  • Unexplained Pain Investigation of persistent or unexplained pain in the arm that may not be evident through physical examination or other imaging modalities.
  • Tendinitis Evaluation of inflammation of tendons that may be causing pain or dysfunction.
  • Muscle Atrophy Identification of abnormal muscle development or wasting that could indicate underlying pathology.
  • Lesions Detection of soft tissue or bone lesions that require further investigation.
  • Osteomyelitis Diagnosis of bone infections that may not be visible on X-rays.
  • Contusions and Hematomas Assessment of bruising or blood accumulation in soft tissues following injury.
  • Fractures Confirmation of broken bones or other abnormalities that may not be clearly visible on X-ray or bone scans.

2. Procedure

The procedure for conducting an MRI of the upper extremity involves several key steps to ensure accurate imaging results. The following outlines the procedural steps:

  • Step 1: Patient Preparation The patient is first informed about the procedure, including what to expect during the MRI. They may be asked to remove any metal objects, such as jewelry or watches, as these can interfere with the magnetic field. The patient is then positioned comfortably on a motorized table, ensuring that the arm being examined is properly aligned with the MRI scanner.
  • Step 2: Positioning within the Scanner Once the patient is ready, the motorized table is moved into the MRI scanner, which is a large, cylindrical machine. The arm being examined is placed within the scanner's opening, and small coils may be positioned around the arm to enhance the quality of the images by improving the transmission and reception of radiowaves.
  • Step 3: Imaging Process The MRI machine is activated, generating a strong magnetic field that aligns the hydrogen atoms in the body. Radiowaves are then sent into the area being scanned, causing the protons in the tissues to emit signals. These signals are captured by the MRI machine and sent to a computer for processing.
  • Step 4: Image Reconstruction The computer processes the received signals and constructs detailed, high-resolution images of the upper extremity. These images are displayed for the physician to review, allowing for the assessment of any abnormalities or conditions present in the arm.
  • Step 5: Completion of the Procedure After the imaging is complete, the patient is carefully removed from the scanner. The entire process typically takes between 30 to 60 minutes, depending on the specific requirements of the examination.

3. Post-Procedure

Following the MRI procedure, patients are generally able to resume their normal activities immediately, as there are no side effects associated with the MRI itself. Since no contrast material is used in CPT® Code 73218, there are no additional precautions related to contrast administration. The physician will review the images obtained during the MRI to identify any potential issues correlating with the patient's symptoms. Results are typically discussed with the patient in a follow-up appointment, where further management or treatment options may be recommended based on the findings.

Short Descr MRI UPPER EXTREMITY W/O DYE
Medium Descr MRI UPPER EXTREMITY OTH THAN JT W/O CONTR MATRL
Long Descr Magnetic resonance (eg, proton) imaging, upper extremity, other than joint; without contrast material(s)
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) 4 - Special payment adjustment rules on the technical component (TC) of multiple diagnostic imaging procedures apply...
Bilateral Surgery (50) 3 - The usual payment adjustment for bilateral procedures 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 88 -
APC Status Indicator Codes That May Be Paid Through a Composite APC
ASC Payment Indicator Radiology service paid separately when provided integral to a surgical procedure on ASC list; payment based on OPPS relative payment weight.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I2D - Advanced imaging - MRI/MRA: other
MUE 2
CCS Clinical Classification 198 - Magnetic resonance imaging

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

0649T Add-on Code MPFS Status: Carrier Priced APC S Quantitative magnetic resonance for analysis of tissue composition (eg, fat, iron, water content), including multiparametric data acquisition, data preparation and transmission, interpretation and report, obtained with diagnostic MRI examination of the same anatomy (eg, organ, gland, tissue, target structure); single organ (List separately in addition to code for primary procedure)
0698T Add-on Code Resequenced Code MPFS Status: Carrier Priced APC S ASC Z2 Quantitative magnetic resonance for analysis of tissue composition (eg, fat, iron, water content), including multiparametric data acquisition, data preparation and transmission, interpretation and report, obtained with diagnostic MRI examination of the same anatomy (eg, organ, gland, tissue, target structure); multiple organs (List separately in addition to code for primary procedure)
RT Right side (used to identify procedures performed on the right side of the body)
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.
LT Left side (used to identify procedures performed on the left side of the body)
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
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
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
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
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).
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
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).
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).
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.
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.
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.
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
F1 Left hand, second digit
F2 Left hand, third digit
F4 Left hand, fifth digit
F5 Right hand, thumb
F6 Right hand, second digit
F7 Right hand, third digit
F8 Right hand, fourth digit
F9 Right hand, fifth digit
FA Left hand, thumb
GQ Via asynchronous telecommunications system
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
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
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
MB Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
MC Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of electronic health record or clinical decision support mechanism vendor issues
MF The order for this service does not adhere to the appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q5 Service furnished under a reciprocal billing 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
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
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
TP Medical transport, unloaded vehicle
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
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2001-01-01 Added First appearance in code book in 2001.
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