Summary & Overview
CPT 40810: Excision of Oral Mucosa and Submucosa Lesion
CPT code 40810 identifies surgical excision of a lesion or diseased area of the anterior oral mucosa and underlying submucosa without repair of the surgical wound. This code is used to capture targeted mucosal/submucosal removals in the oral cavity performed by dental, oral and maxillofacial, or otolaryngology providers. Nationally, accurate use of this code affects clinical documentation, facility billing, and procedural reporting for outpatient oral surgical services.
Key payers in the national analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the procedure, common sites of service, and how the code is classified for reporting. The publication outlines typical billing considerations, payer coverage scope, and available benchmarking indicators where present. It also describes the surgical nature of the service and clarifies that wound repair is not included in the code description.
This summary equips billing managers, revenue cycle staff, and clinical leaders with the foundational information needed to interpret the purpose and clinical application of CPT code 40810, and to identify where to seek additional payer-specific policy or documentation guidance. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 40810 describes excision of a lesion or an area of damaged or diseased tissue of the oral mucosa and the submucosa in the anterior-most part of the mouth. The procedure involves removal of mucosal and submucosal tissue and does not include repair of the surgical wound.
Service type: Surgical excision of mucosal and submucosal lesion
Typical site of service: Oral cavity / outpatient surgical setting or ambulatory surgical center, including dental or oral and maxillofacial surgery suites.
Clinical & Coding Specifications
Clinical Context
A 45-year-old patient presents to an outpatient oral surgery clinic with a symptomatic 6 mm ulcerated lesion of the anterior oral mucosa on the inner lower lip that has failed conservative therapy. The oral and maxillofacial surgeon reviews history, performs an intraoral exam and documents size, location, and clinical suspicion for dysplasia or localized infection. After informed consent, the patient is prepared in a procedure room. Local anesthesia is administered, and the surgeon excises the lesion including the mucosa and submucosa down to, but not including, deeper muscle or skin layers. Hemostasis is achieved with cautery and simple packing; no layered closure or complex reconstruction is performed. The excised specimen is sent for pathology. Postoperative instructions and analgesics are provided, and a short follow-up visit is arranged.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, Separately Identifiable Evaluation and Management Service by the Same Physician on the Day of a Procedure | When a distinct E/M visit is performed on the same day as the excision and is documented separately. |
57 | Decision for Surgery (Note: not listed in provided modifiers) |