Summary & Overview
CPT 42700: Incision and Drainage of Peritonsillar Abscess
CPT code 42700 represents incision and drainage of a peritonsillar abscess, a common urgent minor surgical procedure to evacuate pus adjacent to a tonsil. Nationally, this code is relevant across emergency departments, ambulatory surgical centers, and outpatient clinics where acute oropharyngeal infections are managed. Proper coding affects episode capture, quality measurement, and payment for urgent head and neck procedures.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for peritonsillar abscess drainage, typical sites of service, and coding considerations tied to procedure reporting. The report summarizes available national benchmarks where present and highlights policy and billing practice notes that influence reimbursement and claims processing.
This publication helps clinicians, coding professionals, and policy analysts understand when CPT code 42700 is used, how it fits into surgical and urgent care service lines, and what documentation and billing contexts typically accompany the procedure. Data not available in the input will be noted as such in relevant sections.
Billing Code Overview
CPT code 42700 describes an incision and drainage of a peritonsillar abscess, where the provider uses an incision to drain an abscess adjacent to one of the tonsils. The service type is a minor surgical drainage procedure. The typical site of service is an outpatient clinic, emergency department, or ambulatory surgical center where minor procedures are performed.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult or adolescent presenting to the urgent care clinic or emergency department with acute onset sore throat, fever, muffled unilateral throat pain, trismus, and difficulty swallowing. Examination reveals a peritonsillar swelling with uvular deviation and fluctuance suggestive of a peritonsillar abscess. After topical or local anesthesia, the provider performs a transoral incision and drainage of the abscess adjacent to the tonsil (procedural code 42700). The workflow includes informed consent, analgesia/local anesthesia, aspiration or incision with drainage, culture collection if purulent material is obtained, monitoring for bleeding, post-procedure instructions and prescription for appropriate antibiotics and analgesics, and scheduling follow-up within 24–72 hours to confirm resolution or need for further intervention.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service on the same day as a procedure | Use when a distinct E/M visit is documented in addition to 42700 (Note: 25 was not in the provided list; as per strict rules, do not add beyond provided — Data not available in the input.) |