Summary & Overview
CPT 0108T: Cold Sensation and Pain Threshold Testing
CPT code 0108T describes a quantitative sensory testing procedure that determines cold sensation and pain thresholds by stimulating the skin of an extremity and comparing responses to normative values. This assessment targets small-fiber sensory function and is used in diagnosing peripheral neuropathies and other conditions that damage small nerve endings. The code matters nationally as clinicians and payers evaluate coverage and appropriate use of specialized sensory testing for diagnostic clarity in complex neuropathic presentations.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical intent and typical sites of service, common billing considerations, and national benchmarking context where available. The publication outlines what constitutes the service, clinical scenarios prompting testing, and the diagnostic value of quantifying cold detection and pain thresholds.
This summary also indicates areas where input data was not provided. Sections that follow present benchmarks, payer policy patterns, and coding nuances when available, along with links to clinical background and resources for further review.
Billing Code Overview
CPT code 0108T measures cold sensation and pain thresholds by stimulating the skin of an extremity and comparing responses to normal values. The service quantifies cooling sensory function to assess damage to small nerve endings and helps characterize sensory neuropathy.
Service Type: Sensory nerve function testing / Quantitative sensory testing
Typical Site of Service: Outpatient clinic or specialized neurodiagnostic laboratory
Clinical & Coding Specifications
Clinical Context
A 54-year-old patient with a history of chemotherapy-induced peripheral neuropathy presents with persistent numbness and burning pain in the distal lower extremities. The referring neurologist orders quantitative sensory testing to evaluate small-fiber sensory function. In the outpatient neurodiagnostic laboratory, a trained clinician explains the 0108T test purpose and obtains informed consent. The patient is positioned comfortably with the lower extremity exposed. The clinician applies calibrated cold stimuli to standardized sites on the foot and lower leg while recording the temperature thresholds at which the patient first perceives cold and the temperature at which the sensation becomes painful. Results are compared to age- and sex-matched normative values and documented in the report. The findings help confirm small-fiber neuropathy, guide further diagnostic evaluation (for example, skin biopsy or autonomic testing), and inform management decisions such as medication selection and referral to pain management or physical therapy.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the test required substantially greater effort or time than typical and documentation supports unusual circumstances. |