A4680 Activated carbon filter, each
Also known as: carbon filter, charcoal filter, activated charcoal cartridge
A cartridge or canister containing activated charcoal filter material used in dialysis water purification systems. Removes organic compounds, chlorine, and chloramines from water.
In Plain Language
charcoal filter for dialysis water; water purification cartridge
Clinical Context
Used in water purification systems that supply dialysis machines. Filters are replaced regularly (typically monthly) based on water quality testing.
RVU Information
CPT A4680 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 A4680?
CPT A4680 (Activated carbon filter, each) is a A Codes code. A cartridge or canister containing activated charcoal filter material used in dialysis water purification systems. Removes organic compounds, chlorine, and chloramines from water.
Does Medicare cover A4680?
Medicare coverage for A4680 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used in water purification systems that supply dialysis machines. Filters are replaced regularly (typically monthly) based on water quality testing. A physician order is typically required.
When is CPT A4680 used?
Used in water purification systems that supply dialysis machines. Filters are replaced regularly (typically monthly) based on water quality testing.
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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.