A4620 Variable concentration mask
Also known as: variable concentration mask, venturi mask
Variable concentration mask for oxygen delivery.
In Plain Language
precision oxygen mask
Clinical Context
Used to deliver specific oxygen concentrations in critical care settings. Variable ports allow precise fraction of inspired oxygen control.
RVU Information
CPT A4620 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 A4620?
CPT A4620 (Variable concentration mask) is a A Codes code. Variable concentration mask for oxygen delivery.
Does Medicare cover A4620?
Medicare coverage for A4620 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used to deliver specific oxygen concentrations in critical care settings. Variable ports allow precise fraction of inspired oxygen control. A physician order is typically required.
When is CPT A4620 used?
Used to deliver specific oxygen concentrations in critical care settings. Variable ports allow precise fraction of inspired oxygen control.
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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.