Diagnostic Radiology (Diagnostic Imaging) 73721 (Q&A)
Question
What is the appropriate code to report for an MRI of the hip? What is the appropriate code to report for a bilateral study?
AMA Comment
The appropriate code to report for an MRI of the hip is CPT code 73721, Magnetic resonance (eg, proton) imaging, any joint of lower extremity; without contrast material, or CPT code 73722, Magnetic resonance (eg, proton) imaging, any joint of lower extremity; with contrast material, contingent upon the use of contrast material.
From a CPT coding perspective, the use of modifier 50, Bilateral procedure, is generally not recommended when bilateral radiology examinations are reported. Rather, the appropriate radiology code is listed twice on the claim form.
In addition, third-party payer reporting guidelines may differ. For example, the HCPCS Level II modifiers RT and LT may be required, or other specific reporting policies have been established, such as reporting the code as a one-line entry on the claim form with a "2" in the units field. Therefore, it is always important to verify the specific reporting requirements for bilateral radiological examinations with the respective third-party payers."
I would also verify that both hips are in fact ordered and the radiologist mentions both in his/her findings.