Summary & Overview
CPT 21110: Interdental Fixation Device Placement for Jaw Stabilization
CPT code 21110 covers the application of an interdental fixation device—such as upper and lower arch bars—used to stabilize the jaws following procedures like maxillary mandibular advancement (MMA) or other jaw repositioning. This code reflects a discrete procedural step in oral and maxillofacial surgery that supports postoperative stability and healing. Nationally, accurate billing and clinical documentation for this code are important for surgical teams, hospital billing departments, and payers managing coverage of orthognathic and reconstructive jaw procedures.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the service, common settings where the procedure is performed, and the payer landscape covered in the analysis. The publication also addresses benchmarks and policy-relevant items that affect coverage and reimbursement coding practices, operational considerations for surgical services, and common billing modifiers used in practice. Where input data is incomplete, the report notes missing elements explicitly as "Data not available in the input." The content is organized to support coding accuracy, payer engagement, and administrative planning for facilities and clinicians involved in jaw stabilization procedures.
Billing Code Overview
CPT code 21110 describes the application of an interdental fixation device, commonly used to stabilize the jaws after procedures such as maxillary mandibular advancement (MMA) or other repositioning of the upper and lower jaws. The procedure involves placement of upper and lower arch bars or similar fixation hardware to maintain alignment and promote stability during the healing period.
Service type: Surgical fixation / Oral and maxillofacial stabilization
Typical site of service: Hospital operating room or ambulatory surgical center, and may also occur in inpatient surgical settings when performed as part of craniofacial or orthognathic surgery.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 28–45-year-old adult who undergoes maxillomandibular advancement (MMA) surgery to treat moderate-to-severe obstructive sleep apnea refractory to conservative measures. The surgeon performs orthognathic repositioning of the maxilla and mandible under general anesthesia and, at the conclusion of the case, applies interdental fixation devices such as upper and lower arch bars or intermaxillary fixation wires to stabilize the jaws during early bone healing. The clinical workflow includes preoperative planning with sleep study correlation and imaging, intraoperative osteotomies with rigid internal fixation, placement of arch bars or interdental fixation (CPT 21110) to maintain occlusion, immediate postoperative airway monitoring in the PACU, and outpatient follow-up for removal of fixation and assessment of occlusion and healing within 4–6 weeks. Typical site of service is an inpatient or ambulatory surgical center with an operating room and dental/craniofacial surgical specialty support. Providers involved include oral and maxillofacial surgeons, otolaryngologists with skull base/craniofacial training, anesthesiologists, and perioperative nursing staff.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normal, pre-established work | Use when this is the provider's usual, expected service without unusual circumstances. |