A4709 Acid concentration sol per gallon
Also known as: acid concentrate, acidifying agent, hydrochloric acid
Hydrochloric acid or citric acid concentrate solution supplied in gallon containers used in hemodialysis as an acidifying agent for dialysate preparation and water softening.
In Plain Language
acid solution for dialysis; water treatment chemical
Clinical Context
Used to adjust pH and conductivity of dialysate to appropriate ranges. Maintains electrolyte composition essential for hemodialysis efficacy.
RVU Information
CPT A4709 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 A4709?
CPT A4709 (Acid concentration sol per gallon) is a A Codes code. Hydrochloric acid or citric acid concentrate solution supplied in gallon containers used in hemodialysis as an acidifying agent for dialysate preparation and water softening.
Does Medicare cover A4709?
Medicare coverage for A4709 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used to adjust pH and conductivity of dialysate to appropriate ranges. Maintains electrolyte composition essential for hemodialysis efficacy. A physician order is typically required.
When is CPT A4709 used?
Used to adjust pH and conductivity of dialysate to appropriate ranges. Maintains electrolyte composition essential for hemodialysis efficacy.
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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.