0109T Heat quantitative sensory test
Also known as: QST heat test, warm threshold testing, thermal QST heating
Quantitative sensory testing (QST) using heat-pain stimuli to assess warm sensation thresholds and heat pain thresholds. Category III code for standardized psychophysical testing of heat perception.
In Plain Language
heat sensitivity test; warm sensation test
Clinical Context
Used for quantitative sensory testing using calibrated heating stimuli to assess C-fiber (unmyelinated) sensory function. Warm detection and heat pain thresholds evaluate small fiber neuropathy. Particularly useful in diabetic neuropathy, fibromyalgia, and complex regional pain syndrome.
RVU Information
CPT 0109T does not have a physician work RVU assigned by CMS. Category III codes for emerging technology do not receive RVU assignments. Reimbursement is negotiated with individual payers.
Billing & Documentation
Category III codes are temporary codes for emerging technology, services, and procedures. They are not assigned RVU values by CMS. Coverage and reimbursement vary by payer — check with individual insurers before billing. These codes sunset after 5 years if not converted to Category I.
Specialties
Frequently Asked Questions
What is CPT code 0109T?
CPT 0109T (Heat quantitative sensory test) is a Category III code. Quantitative sensory testing (QST) using heat-pain stimuli to assess warm sensation thresholds and heat pain thresholds. Category III code for standardized psychophysical testing of heat perception.
Is 0109T a permanent CPT code?
No — 0109T is a Category III temporary code for emerging technology. It may be converted to a permanent Category I code if widely adopted. Category III codes expire after 5 years without renewal.
When is CPT 0109T used?
Used for quantitative sensory testing using calibrated heating stimuli to assess C-fiber (unmyelinated) sensory function. Warm detection and heat pain thresholds evaluate small fiber neuropathy. Particularly useful in diabetic neuropathy, fibromyalgia, and complex regional pain syndrome.
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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.