CPT® Code 0640T

Noncontact near-infrared spectroscopy (eg, for measurement of deoxyhemoglobin, oxyhemoglobin, and ratio of tissue oxygenation), other than for screening for peripheral arterial disease, image acquisition, interpretation, and report; first anatomic site

Noncontact near-infrared spectroscopy (NIRS) is a sophisticated imaging technique utilized primarily for the assessment of wounds, including diabetic ulcers, and the evaluation of skin flap oxygen perfusion. This method employs near-infrared light to measure the levels of deoxyhemoglobin and oxyhemoglobin in the tissue, thereby calculating the ratio of tissue oxygenation. The ability to differentiate between oxygenated and deoxygenated blood is crucial for predicting wound healing, assessing skin flap viability, and determining the success of biologic wound matrix applications. The principle behind NIRS is based on the relative transparency of tissue to near-infrared light, which reflects differently depending on the oxygenation status of the blood. A noncontact, hand-held imaging device, such as SnapshotNIR, is used to perform this assessment. The device is positioned over the area of interest, emitting six distinct near-infrared electromagnetic wavelengths of light that interact with hemoglobin molecules in the capillary bed. The light that is not absorbed is reflected back to the device, which records the data. Proprietary software then analyzes the return signal to assess the oxygen saturation levels at each pixel, producing a color-coded map alongside the clinical image. This comprehensive data is interpreted to generate a report detailing the healing progress or viability of the flap, as well as predicting the healing trajectory. Such information is invaluable in mitigating risks and enhancing patient outcomes. The CPT® code 0640T encompasses both the image acquisition and the interpretation and report for the first anatomic site evaluated, while code 0859T should be reported for each additional anatomic site assessed.