A4640 Alternating pressure pad
Also known as: pressure relief mattress, alternating pressure mattress, air mattress
A specialized mattress pad with alternating air cells that cyclically inflate and deflate to redistribute pressure and improve circulation. Used for pressure ulcer prevention and management.
In Plain Language
special mattress that prevents bed sores; pressure relief pad
Clinical Context
Used for patients at high risk for pressure injuries or with existing pressure ulcers (Stages 1-4). Common in ICU, long-term care, and home care settings for immobilized patients.
RVU Information
CPT A4640 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 A4640?
CPT A4640 (Alternating pressure pad) is a A Codes code. A specialized mattress pad with alternating air cells that cyclically inflate and deflate to redistribute pressure and improve circulation. Used for pressure ulcer prevention and management.
Does Medicare cover A4640?
Medicare coverage for A4640 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used for patients at high risk for pressure injuries or with existing pressure ulcers (Stages 1-4). Common in ICU, long-term care, and home care settings for immobilized patients. A physician order is typically required.
When is CPT A4640 used?
Used for patients at high risk for pressure injuries or with existing pressure ulcers (Stages 1-4). Common in ICU, long-term care, and home care settings for immobilized patients.
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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.