A4634 Replacement bulb th lightbox
Also known as: lightbox bulb, light bulb replacement, SAD lamp
A replacement bulb or lamp for a lightbox or light therapy device used for seasonal affective disorder and other light-based therapeutic applications. Provides specialized full-spectrum illumination.
In Plain Language
replacement light for mood lamp; light bulb for therapy
Clinical Context
Used in treatment of Seasonal Affective Disorder (SAD) and other mood disorders responsive to bright light therapy. Bulbs degrade with use and require annual replacement.
RVU Information
CPT A4634 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 A4634?
CPT A4634 (Replacement bulb th lightbox) is a A Codes code. A replacement bulb or lamp for a lightbox or light therapy device used for seasonal affective disorder and other light-based therapeutic applications. Provides specialized full-spectrum illumination.
Does Medicare cover A4634?
Medicare coverage for A4634 depends on medical necessity and applicable Local Coverage Determinations (LCDs). Used in treatment of Seasonal Affective Disorder (SAD) and other mood disorders responsive to bright light therapy. Bulbs degrade with use and require annual replacement. A physician order is typically required.
When is CPT A4634 used?
Used in treatment of Seasonal Affective Disorder (SAD) and other mood disorders responsive to bright light therapy. Bulbs degrade with use and require annual replacement.
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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.