CPT Code Overview

CPT code 73221 represents magnetic resonance imaging (MRI) of any joint in the upper extremity without contrast material. This diagnostic radiology procedure is commonly used to evaluate conditions affecting joints such as the shoulder, elbow, wrist, or hand. The service is typically performed in an imaging facility or hospital outpatient setting, providing detailed images to assist clinicians in diagnosing musculoskeletal disorders, injuries, or other abnormalities. MRI is a non-invasive technique that offers high-resolution visualization of soft tissues, bones, and joint structures, supporting clinical decision-making in orthopaedic, rehabilitation, and emergency medicine contexts.

Clinical Context

A patient presents to an imaging facility or hospital outpatient setting with persistent pain or dysfunction in the shoulder or another upper extremity joint. The referring provider, such as an orthopaedic surgeon or emergency medicine physician, suspects a musculoskeletal condition like rotator cuff tear, bursitis, osteoarthritis, or joint sprain. To further evaluate the joint and guide treatment, the provider orders a magnetic resonance imaging (MRI) of the affected upper extremity joint without contrast. The radiologist interprets the MRI images to assist in diagnosis and management.

Coding Specifications

• Modifiers:

  • Modifier 26: Used when billing for the professional component (interpretation of the MRI) only.
  • Modifier TC: Used when billing for the technical component (performance of the MRI) only.
  • Modifier 59: Used to indicate a distinct procedural service, such as when multiple procedures are performed on the same day that are not normally reported together.

• Provider Taxonomies:

These taxonomies represent specialties commonly involved in ordering, performing, or interpreting MRI procedures of the upper extremities.

Related Diagnoses

• M25.511: Pain in right shoulder

  • Relevant for patients presenting with right shoulder pain requiring MRI evaluation.

• M25.512: Pain in left shoulder

  • Used for left shoulder pain cases where MRI is indicated.

• M19.90: Unspecified osteoarthritis, unspecified site

  • Applied when osteoarthritis is suspected in the upper extremity joint being imaged.

• S43.401A: Sprain of unspecified acromioclavicular joint, initial encounter

  • Used for acute injuries to the acromioclavicular joint, often requiring MRI for assessment.

• M75.100: Unspecified rotator cuff tear or rupture of unspecified shoulder

  • Indicates possible rotator cuff pathology, a common reason for shoulder MRI.

• M75.51: Bursitis of shoulder

  • Used when bursitis is suspected and MRI is needed for diagnosis.

• M77.9: Enthesopathy, unspecified

  • Relevant for cases of tendon or ligament attachment disorders, which may be evaluated by MRI.

Related CPT Codes

• 73222: Magnetic resonance (eg, proton) imaging, any joint of upper extremity; with contrast material(s)

  • Used when the MRI is performed with contrast, often to enhance visualization of certain structures or pathology.
  • May be selected instead of 73221 if contrast is clinically indicated.

• 73223: Magnetic resonance (eg, proton) imaging, any joint of upper extremity; without contrast material(s), followed by contrast material(s) and further sequences

  • Used when the MRI is performed first without contrast, then with contrast and additional imaging sequences.
  • May be used in more complex cases where both non-contrast and contrast images are needed for comprehensive evaluation.

These codes are alternatives or additions to 73221 depending on whether contrast is used during the MRI procedure.

National mean rates for CPT code 73221 show a significant gap between Medicare and commercial payers. Medicare's mean rate is $142.34, while the average for BUCA (Blue Cross Blue Shield, UnitedHealth Group, Cigna, and Aetna) is $252.35, representing a difference of over $110 per claim.

Rate dispersion varies across payers. Cigna exhibits the widest spread, with a difference of $184.46 between its 75th and 25th percentiles, indicating greater variability in contracted rates. In contrast, Aetna has the tightest range at $128.00, suggesting more consistent reimbursement levels. Other commercial payers fall between these extremes.

The table and chart below present a detailed breakdown of national mean rates and percentile values for each payer.