Summary & Overview
CPT 42894: Pharyngeal Wall or Pyriform Sinus Resection with Flap Closure
CPT code 42894 denotes partial removal of the pharyngeal wall or pyriform sinus with closure using regional or free flaps. This reconstructive head and neck surgery code is used for procedures addressing defects after tumor resection, trauma, or other pathologic processes that compromise the pharyngeal lumen and surrounding tissues. Nationally, accurate use of 42894 matters for appropriate surgical billing, perioperative quality measurement, and tracking utilization of complex reconstructive techniques.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the procedure and its clinical context, typical sites of service, and which payers are relevant. The publication also outlines expected benchmarks and policy considerations relevant to reimbursement and coverage determinations, summarizes typical clinical scenarios that generate use of the code, and highlights any recent policy or coding guidance impacting claims processing.
The content is intended for coding professionals, billing staff, surgical providers, and health policy analysts seeking a national-level reference for 42894, its clinical application, and implications for payer coverage and hospital billing practices.
Billing Code Overview
CPT code 42894 describes a surgical procedure in which the provider removes part of the pharyngeal wall or pyriform sinus and closes the resulting defect using a myocutaneous or fasciocutaneous flap, or a free muscle, skin, or fascial flap. The service type is reconstructive head and neck surgery focused on defect closure after partial pharyngectomy or related resections. The typical site of service is an operating room in an inpatient or outpatient hospital setting where head and neck surgical reconstruction is performed.
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Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old male with a squamous cell carcinoma of the hypopharynx involving the pyriform sinus and adjacent pharyngeal wall. After staging workup (contrast CT, PET-CT, flexible endoscopy) and multidisciplinary tumor board review, the patient is scheduled for wide local excision of the involved pharyngeal wall and partial resection of the pyriform sinus for oncologic clearance. During the operative workflow, the head and neck surgeon performs en bloc resection of the tumor with negative margins, assesses defects, and reconstructs the resultant pharyngeal and hypopharyngeal defect using a myocutaneous or fasciocutaneous pedicled flap (for example, pectoralis major myocutaneous flap) or a free tissue transfer (for example, radial forearm free flap) to restore pharyngeal continuity and protect the airway. Intraoperative steps include direct laryngoscopy or suspension microlaryngoscopy for visualization, neck dissection if indicated, flap inset and microvascular anastomosis if a free flap is chosen, layered closure, and placement of feeding access (eg, nasogastric or gastrostomy) when required. Postoperative care includes ICU or step-down monitoring for airway compromise and flap viability, swallow evaluation, speech and swallow therapy, and adjuvant radiation or chemoradiation as indicated by pathology.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required is substantially greater than typical (extensive resection, complex reconstruction). |