Florida Subscriber Answer: Magnetic resonance venography (MRV) is magnetic resonance angiography (MRA) of a vein. You should use MRA codes for MRV procedures.
Example: Your patient has had seizures and requires MRV to evaluate compression by tumor of the cerebral venous sinus.
Depending on the use of contrast, you report:
• 70544 -- Magnetic resonance angiography, head; without contrast material(s)
• 70545 -- ... with contrast material(s)
• 70546 -- ... without contrast material(s), followed by contrast material(s) and further sequences.