A9540 Tc99m maa
Also known as: Tc-99m MAA, macroaggregated albumin
Technetium Tc-99m macroaggregated albumin injection used as a radiotracer for pulmonary perfusion imaging.
In Plain Language
lung blood flow imaging dye; pulmonary perfusion tracer
Clinical Context
Used in nuclear cardiopulmonary imaging for assessment of pulmonary perfusion and detection of pulmonary emboli.
RVU Information
CPT A9540 does not have a physician work RVU assigned by CMS. This is typical for supply, drug, and equipment codes — reimbursement is based on Average Sales Price (ASP), fee schedules, or payer contracts rather than the RVU system.
Billing & Documentation
HCPCS A-codes cover medical supplies, equipment, and transport services. Documentation must establish medical necessity and include a physician order. For durable medical equipment (DME), a Certificate of Medical Necessity (CMN) or detailed written order may be required.
Specialties
Frequently Asked Questions
What is CPT code A9540?
CPT A9540 (Tc99m maa) is a A Codes code. Technetium Tc-99m macroaggregated albumin injection used as a radiotracer for pulmonary perfusion imaging.
Does Medicare cover A9540?
Medicare coverage for A9540 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used in nuclear cardiopulmonary imaging for assessment of pulmonary perfusion and detection of pulmonary emboli. A physician order is typically required.
When is CPT A9540 used?
Used in nuclear cardiopulmonary imaging for assessment of pulmonary perfusion and detection of pulmonary emboli.
Track This Code in RVU Edge
Log procedures, calculate wRVUs, and benchmark against national data — all in one app.
CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.