CPT 00100: Anesthesia for Salivary Gland Procedures, Including Biopsy
CPT code 00100 represents anesthesia services delivered for procedures on the salivary glands, including biopsies. Nationally, this code captures anesthesia care provided during diagnostic and surgical interventions on the parotid, submandibular, and sublingual glands and is used by anesthesiologists, certified registered nurse anesthetists, and anesthesiology assistants. It is relevant to hospitals and ambulatory surgical centers where head and neck procedures are performed. Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare. Readers will find a concise overview of clinical context, common associated diagnoses such as salivary gland disease and sialolithiasis, typical sites of service, and mappings to related surgical procedure codes for salivary gland excision. The publication also outlines common modifiers used with anesthesia billing and the professional taxonomies that commonly bill for this service. This resource is intended to help payers, hospital billing teams, and clinical administrators understand the clinical role of CPT code 00100, typical coding relationships to related surgical procedures, and the payer landscape relevant to national reimbursement and claims processing practices. Data not available in the input will be noted where applicable.
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Billing Code Overview
CPT code 00100 describes anesthesia services provided for procedures on the salivary glands, including biopsy. This service represents the administration and management of anesthesia care by an anesthesia provider for patients undergoing diagnostic or surgical interventions involving the parotid, submandibular, or sublingual glands.
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Service type: General anesthesia services for salivary gland procedures
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Typical site of service: Hospital operating room or ambulatory surgical center
Clinical & Coding Specifications
Clinical Context
A 58-year-old male presents with recurrent left submandibular swelling, pain with meals, and a palpable firm mass. Imaging (ultrasound and CT) demonstrates a 1.2 cm sialolith obstructing Wharton duct with associated gland inflammation. Otolaryngology schedules an operative procedure for removal of the stone and possible limited gland exploration with biopsy if chronic changes are seen. The patient has controlled hypertension and type 2 diabetes (ASA II–III) and receives preoperative evaluation by the anesthesia team.
An anesthesiologist or CRNA performs general anesthesia with endotracheal intubation for an intraoral and possible transcervical approach to the submandibular gland/duct. The workflow includes pre-op evaluation, airway assessment, induction, maintenance of anesthesia, intraoperative monitoring, management of surgical bleeding and hemodynamics, emergence, and immediate post-anesthesia recovery. If the procedure is limited to biopsy or minimally invasive stone extraction, monitored anesthesia care or local with sedation may be appropriate; for excision or complex exploration, general anesthesia is typical. Documentation includes ASA physical status, airway plan, anesthesia start/stop times, anesthetic agents, airway device, intraoperative events, and any modifiers applicable to the service.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
23 | Unusual anesthesia — for emergency or clinically necessary circumstances where general anesthesia is administered for a procedure that normally does not require it | Use when general anesthesia is required for salivary gland biopsy/exploration despite usual local/regional approaches due to patient factors or procedural complexity |
50 | Bilateral procedure | Use when bilateral salivary gland procedures are performed during the same anesthetic |
52 | Reduced services | Use when the planned anesthetic was partially reduced in scope (e.g., abbreviated duration or limited monitoring) but still billed |
53 | Discontinued procedure | Use when the procedure is begun but halted due to patient instability or other intraoperative issues requiring termination of surgery/anesthesia |
54 | Surgical care only | Use when the anesthesiologist provides intraoperative anesthesia only and another clinician manages pre/postoperative anesthesia care |
55 | Postoperative management only | Use when the anesthesiologist provides only postoperative anesthesia care (rare for primary anesthetic for this procedure) |
56 | Preoperative management only | Use when the anesthesiologist provides only preoperative evaluation and not the intraoperative anesthetic |
62 | Two surgeons | Use when two surgeons with distinct specialties concurrently perform parts of the salivary gland procedure (e.g., ENT and oral surgeon) |
78 | Unplanned return to OR following initial procedure | Use when patient requires immediate return to the operating room for a related complication during the same hospitalization |
AA | Anesthesia service performed personally by anesthesiologist | Use when the billed anesthesiologist personally performs the anesthesia service |
AD | Medical direction of two, three, or four anesthetists | Use when a supervising anesthesiologist directs multiple CRNAs for the case |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services for anesthesia | Use when an advanced practice provider provides anesthesia services under supervision as allowed by payer policy |
QK | Medical direction of two, three, or four CRNAs/AA by anesthesiologist | Use when an anesthesiologist medically directs multiple CRNAs/Anesthesiology Assistants for the case |
QS | Monitored anesthesia care (MAC) service | Use when the service delivered was MAC rather than general or regional anesthesia |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207L00000X | Anesthesiology | Physician anesthesiologist providing perioperative anesthesia and medical direction |
367500000X | Certified Registered Nurse Anesthetist | CRNA performing anesthesia under supervision or independently per state law |
207RA0401X | Anesthesiology Assistant | Anesthesiology assistant participating under physician supervision |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
K11.9 | Disease of salivary gland, unspecified | General diagnosis for salivary gland pathology when specific disorder is not classified; may be used for biopsy or diagnostic procedures |
K11.5 | Sialolithiasis | Presence of salivary gland stones causing obstruction and recurrent infection or pain; common indication for stone extraction, duct exploration, or gland excision |
K11.8 | Other specified diseases of salivary glands | Includes specific nonneoplastic salivary gland conditions that prompt biopsy, drainage, or excision depending on clinical findings |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
42410 | Excision of parotid tumor | Major salivary gland surgery that may require more extensive anesthesia planning and longer anesthesia time compared with biopsy or limited duct procedures |
42415 | Excision of submandibular gland | Definitive surgical removal of the submandibular gland; often performed when stones or chronic disease are not amenable to limited extraction and requires general anesthesia |
42420 | Excision of sublingual gland | Surgical removal of sublingual gland for tumors or chronic disease; similar anesthetic implications when compared to submandibular or parotid surgeries |