CPT 42820 Tonsillectomy & Adenoidectomy Benchmarks | OpenPayer

Summary & Overview

CPT 42820: Tonsillectomy and Adenoidectomy for Patients Under 12

CPT code 42820 is a widely utilized billing code for the surgical removal of tonsils and adenoids in children under 12 years of age. This procedure, performed by otolaryngologists and pediatric specialists, addresses chronic infections and airway obstructions, making it a critical intervention in pediatric care across the United States. The code is recognized by major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare, ensuring broad coverage and reimbursement for providers.

This publication provides a comprehensive overview of 42820, including clinical context, payer coverage, and policy benchmarks. Readers will gain insight into typical sites of service, such as ambulatory surgical centers, and understand the role of this procedure in pediatric otolaryngology. The analysis also highlights relevant modifiers, associated provider taxonomies, and common ICD-10 diagnoses linked to the code. Additionally, related CPT codes are discussed to clarify distinctions in age and procedure type. The summary equips healthcare professionals, administrators, and policy analysts with essential information for navigating billing, compliance, and clinical practice standards for tonsillectomy and adenoidectomy in young patients.

AetnaBlue Cross Blue ShieldCigna HealthMedicareUnitedHealthcareCPT 42820otolaryngologytonsillectomyadenoidectomypediatric surgeryambulatory surgical centermedical billingprocedure benchmarksclinical contextpolicy updates

CPT Code Overview

CPT code 42820 describes the surgical removal of both the tonsils and adenoids in patients younger than 12 years old. This procedure is commonly performed by specialists in otolaryngology and is typically conducted in an ambulatory surgical center (Place of Service 24). Tonsillectomy and adenoidectomy are indicated for pediatric patients experiencing chronic or recurrent infections, airway obstruction, or other related conditions. The procedure is a standard intervention in pediatric otolaryngology, aiming to improve breathing, reduce infection risk, and enhance overall quality of life for affected children.

Clinical & Coding Specifications

Clinical Context

A typical patient scenario involves a child under 12 years old presenting to an otolaryngology clinic with symptoms such as chronic sore throat, difficulty breathing through the nose, snoring, or recurrent infections. The provider evaluates the patient and determines that both the tonsils and adenoids are enlarged or chronically infected, leading to obstructive symptoms or repeated infections. After clinical assessment and discussion with the family, the decision is made to perform a combined tonsillectomy and adenoidectomy. The procedure is scheduled at an ambulatory surgical center, and the child is cared for by an otolaryngologist or pediatric otolaryngologist. Postoperative care includes monitoring for bleeding, pain management, and follow-up to assess recovery.

Coding Specifications

Modifier 50 (Bilateral Procedure): Used when the procedure is performed on both sides of a paired organ or structure. For tonsillectomy and adenoidectomy, this modifier is not typically required as the procedure inherently involves both sides.
Modifier 51 (Multiple Procedures): Applied when multiple procedures are performed during the same operative session. If other procedures are performed in addition to tonsillectomy and adenoidectomy, this modifier may be used.

Provider Taxonomy Code	Specialty Name

National Reimbursement Benchmarks

Medicare's national mean rate for CPT code 42820 is $266.62, which is significantly lower than the BUCA (Blue Cross Blue Shield, UnitedHealth Group, Cigna, Aetna) commercial average of $394.90. Among commercial payers, UnitedHealth Group has the highest mean rate at $519.37, while Aetna is the lowest at $327.13.

Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies notably across payers. Medicare exhibits the tightest range at $20.00, indicating relatively consistent reimbursement. In contrast, UnitedHealth Group shows the widest dispersion at $311.00, reflecting greater variability in rates. Cigna and BCBS also display substantial ranges of $258.00 and $179.67, respectively, while Aetna and BUCA are somewhat narrower at $194.43 and $214.34.

The table and chart below present the full breakdown of national benchmarks for CPT code 42820 by payer, including mean rates and percentile values.

CPT 42894: Pharyngeal Wall or Pyriform Sinus Resection with Flap Closure

CPT-42815-BRACHIAL-CLEFT-CYST-EXCISION

CPT 42815: Brachial Cleft Cyst Excision

CPT-42844-TONSIL-AND-OROPHARYNGEAL-RESECTION-WITH-LOCAL-FLAP-CLOSURE

CPT 42844: Tonsil and Oropharyngeal Resection with Local Flap Closure

CPT-42860-TONSILLAR-REMNANT-POLYPECTOMY

CPT 42860: Removal of Tonsillar Remnants and Polyps

CPT-42826-TONSILLECTOMY-AGE-12-AND-OLDER

CPT 42826: Tonsillectomy for Patients Age 12 and Older

CPT-42804-NASOPHARYNGEAL-LESION-BIOPSY

CPT 42804: Biopsy of Visible Nasopharyngeal Lesion

CPT-42821-TONSILLECTOMY-ADENOIDECTOMY-AGE-12-PLUS

CPT 42821: Tonsillectomy and Adenoidectomy, Age 12 or Older

CPT-42870-LINGUAL-TONSILLECTOMY-BASE-OF-TONGUE

CPT 42870: Lingual Tonsillectomy at Base of Tongue

CPT-42845-TONSIL-AND-OROPHARYNGEAL-RESECTION-WITH-CHEST-FLAP-RECONSTRUCTION

CPT 42845: Tonsil and Oropharyngeal Resection with Chest Flap Reconstruction

CPT-42831-INITIAL-ADENOIDECTOMY-AGE-12-OR-OLDER

CPT 42831: Initial Adenoidectomy for Patients Aged 12 Years or Older

Showing 1–10 of 22

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Related CPT Codes

CPT Code	Description	Clinical Relationship
`42821`	Tonsillectomy and adenoidectomy; age 12 or over	Used for patients age 12 or older; alternative to `42820`
`42826`	Tonsillectomy, primary or secondary; younger than age 12	Used when only tonsillectomy is performed in under 12
`42830`	Adenoidectomy, primary; younger than age 12	Used when only adenoidectomy is performed in under 12
`42831`	Adenoidectomy, primary; age 12 or over	Used when only adenoidectomy is performed in age 12+

42821 is an alternative to 42820 for older patients.
42826, 42830, and 42831 are used when only one of the procedures (tonsillectomy or adenoidectomy) is performed, not both.
These codes are not typically billed together with 42820 unless separate procedures are performed.

OpenPayer

Summary & Overview

CPT 42820: Tonsillectomy and Adenoidectomy for Patients Under 12

CPT Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

National Reimbursement Benchmarks

Related Codes

Related Diagnoses

Related CPT Codes

National Reimbursement Benchmarks

Related Codes