Biopsy

A biopsy in dentistry is a diagnostic procedure in which a sample of oral tissue is surgically removed and submitted to a pathology laboratory for microscopic examination to establish a definitive diagnosis. Biopsies are indicated when a patient presents with oral lesions, masses, ulcerations, or tissue changes that cannot be diagnosed through clinical examination alone. The most common types of oral biopsies are incisional biopsies, in which a representative portion of the lesion is removed along with a margin of adjacent normal tissue, and excisional biopsies, in which the entire lesion is removed in its totality. Brush biopsies, a less invasive screening technique, collect surface cells from suspicious areas for cytological analysis and may be used as a preliminary step before a definitive surgical biopsy.

Oral biopsies are a critical component of the early detection of oral cancer and precancerous conditions such as leukoplakia, erythroplakia, and oral lichen planus. The pathologist examines the tissue sample for cellular atypia, dysplasia, or malignancy and provides a histopathologic diagnosis that guides subsequent treatment planning. Early detection of oral squamous cell carcinoma through biopsy dramatically improves survival rates, making prompt biopsy of suspicious lesions an essential responsibility of the dental provider. Beyond malignancy screening, biopsies are also used to diagnose benign conditions including mucoceles, fibromas, granulomas, and autoimmune conditions affecting the oral mucosa. The biopsy specimen must be properly preserved in formalin and accompanied by a pathology requisition that includes relevant clinical information to support accurate interpretation.

From a billing standpoint, biopsy procedures are coded under specific CDT codes that distinguish between brush biopsies, incisional biopsies, and excisional biopsies of soft tissue. The laboratory pathology fee is billed separately from the surgical procedure code, either by the dental practice or directly by the pathology laboratory depending on the billing arrangement. Billing teams should ensure that the clinical record documents the indication for the biopsy, the location and description of the lesion, and the specimen handling protocol. Some dental benefit plans classify biopsies under oral surgery benefits, which may have separate annual maximums or different coverage levels than routine dental services. Verifying the patient's oral surgery benefit coverage before the procedure helps set appropriate financial expectations.