CPT 42507 Parotid Duct Rerouting Reimbursement

CPT code 42507 designates a Wilke-type surgical procedure for parotid duct rerouting, primarily used to treat sialorrhea (pathologic drooling). This code captures a targeted surgical intervention that alters salivary flow by redirecting the parotid duct, typically performed in an operating room setting and billed as a surgical service. Nationally, management of sialorrhea carries implications for quality of life, infection risk reduction, and downstream care needs, making accurate coding important for clinical documentation, utilization tracking, and payment consistency.

Key payers referenced in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical intent and procedural setting for CPT code 42507, common payer coverage patterns, and benchmarking context where available. The publication outlines coding considerations, reimbursement modifiers commonly seen with surgical procedures, and typical clinical indications tied to this operation. It also summarizes what to expect in terms of site-of-service classification (inpatient vs outpatient surgical settings) and how the procedure fits into broader care pathways for patients with refractory sialorrhea.

This resource is intended to inform billing staff, surgical teams, and policy analysts about the clinical context, payer landscape, and operational considerations related to CPT code 42507. Data not available in the input is noted where applicable.

Billing Code Overview

CPT code 42507 describes a Wilke-type procedure, commonly known as parotid duct rerouting, performed to address sialorrhea (excessive drooling). The procedure involves surgically redirecting the parotid duct to alter salivary flow and reduce anterior drooling.

Service Type: Surgical procedure to reroute salivary duct (parotid duct rerouting)

Typical Site of Service: Inpatient or outpatient surgical setting, often performed in an operating room under general anesthesia or monitored anesthesia care depending on clinical circumstances.

Clinical Context

A typical patient is a pediatric or adult patient with medically significant sialorrhea (drooling) that has failed conservative management (behavioral therapy, anticholinergic medications, botulinum toxin injections). The patient presents to an otolaryngology (ENT) clinic with social, dermatologic, or aspiration-related complications from chronic drooling. Preoperative evaluation includes history, physical exam focusing on salivary gland function and duct anatomy, and counseling regarding risks (xerostomia, duct obstruction, facial nerve injury, wound complications). Imaging such as ultrasound or sialography may be obtained selectively. The procedure is performed in an operating room or ambulatory surgical center under general anesthesia. The surgeon performs a parotid duct rerouting (Wilke-type) to redirect saliva flow away from the oral vestibule, reducing anterior drooling. Postoperative care includes short inpatient observation or same-day discharge, pain control, oral hygiene instructions, and follow-up to monitor healing and functional outcomes. Indications commonly include neurodevelopmental disorders (cerebral palsy), progressive neurodegenerative conditions, or refractory sialorrhea impacting quality of life or airway safety.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work, time, or complexity is substantially greater than typical for `42507`.

Taxonomy Code	Specialty	Notes
`207R00000X`	Otolaryngology (ENT)	Primary specialty performing parotid duct rerouting and salivary procedures.
`208000000X`	Oral and Maxillofacial Surgery	May perform related salivary gland duct surgeries in selected cases.
`2084P0800X`	Plastic and Reconstructive Surgery	May be involved when reconstructive techniques are required for duct rerouting or complex wounds.
`207K00000X`	Pediatric Otolaryngology	Subspecialty for pediatric patients with sialorrhea and neurodevelopmental disorders.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`R13.8`	Other dysphagia	Dysphagia can coexist with drooling and influence management decisions for salivary rerouting.
`R19.4`	Change in bowel habit (placeholder)`	Data not applicable to sialorrhea — omit in clinical context.
`R19.0`	Enterostasis (obsolete)`	Not relevant — do not use for sialorrhea.
`R47.1`	Dysarthria	Neurologic impairment causing poor oral motor control often accompanies sialorrhea and is an indication for intervention.
`G80.0`	Spastic quadriplegic cerebral palsy	Example neurologic diagnosis commonly associated with severe drooling prompting procedures like `42507`.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`42810`	Sialendoscopy, diagnostic, with or without irrigation, with or without collection of specimen	Diagnostic evaluation of salivary ductal anatomy prior to or at the time of salivary procedures; may identify obstruction or guide intervention.
`42420`	Excision of accessory parotid gland	Performed when accessory gland tissue contributes to symptoms and is removed during surgical management of sialorrhea.
`42440`	Excision of deep lobe of parotid gland	Performed for pathology involving the deep lobe or when more extensive glandular resection is required.
`42630`	Excision of submandibular gland, transoral	Alternative or adjunct salivary gland surgery when submandibular gland management is part of drooling treatment.
`64612`	Chemodenervation of salivary gland(s) (e.g., botulinum toxin)	Often performed as a less invasive alternative or temporizing measure prior to considering `42507` for refractory drooling.
`99499`	Unlisted evaluation and management service	Used in some billing systems for atypical perioperative coordination when no specific code exists (facility-dependent).

OpenPayer

Summary & Overview

CPT 42507: Parotid Duct Rerouting (Wilke Procedure)