CPT® Code 0846T

Add-On Code

Digitization of glass microscope slides for immunofluorescence, per specimen; each additional single antibody stain procedure (List separately in addition to code for primary procedure)

The CPT® Code 0846T refers to the process of digitizing glass microscope slides specifically for immunofluorescence procedures. This involves converting physical glass slides into a digital format, allowing for the images to be stored either on a local computer server or in a cloud-based archive. The digitization process is significant as it facilitates further examination of the slides, which can be conducted by remote pathologists or through the use of computer algorithms that assist in providing pathologic diagnoses. This method of analysis is distinct from traditional direct visualization through a microscope, as it enables a more versatile approach to pathology. The information obtained from the digitized slides can be managed and interpreted within an increasingly image-based environment, enhancing the diagnostic capabilities of healthcare professionals. The procedure is particularly relevant when an immunofluorescence antibody stain is performed, such as on a skin biopsy specimen, where the digitization of the microscope slides occurs concurrently. For billing purposes, it is important to report CPT® Code 0845T for the first initial single antibody stain and CPT® Code 0846T for each additional single antibody stain digitization performed.