CPT code 0831T describes clinical staff work to scan and digitize whole‑slide glass microscope slides for use in immediate or later pathologic diagnosis of cytology samples; this add‑on service is reported per unit when digitizing slides corresponding to one unit of cytopathology code 88141. The service type is laboratory digital pathology workflow support (slide scanning and image digitization) and the typical site of service is a clinical laboratory or pathology department where cytology specimens (Pap tests) are prepared and scanned for physician interpretation.

For related coverage guidance, see recent payer policy updates: RTM Testing of Homocysteine Metabolism-Related Conditions, Multimarker Serum Testing Related to Ovarian Cancer, Genomic Profiling for Selecting Targeted Cancer Therapies.