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CPT 42305: Complex Drainage of Parotid Gland Abscess

CPT code 42305 represents a complex surgical drainage of an abscess in the parotid salivary gland, a procedure relevant to otolaryngology and head and neck surgery. It matters nationally because parotid infections can require urgent surgical management, inpatient care, and coordination with antimicrobial therapy, which affect utilization, payment policy, and facility resource planning.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the procedure, typical sites of service, and payer coverage considerations. The publication outlines common modifier usage (listed separately), expected service settings, and benchmarks where available.

This summary prepares clinicians, coding professionals, and policy analysts to understand the procedural intent of CPT code 42305, its place in surgical care pathways, and the payer landscape nationally. Data not available in the input for specific ICD-10 diagnoses, CPT-associated taxonomies, and payer-specific reimbursement rates will be noted where applicable.

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Billing Code Overview

CPT code 42305 describes a complex drainage of an abscess of the parotid salivary gland. This procedure involves incision and drainage with attention to the parotid gland and surrounding tissues to evacuate pus and control infection.

Service type: Surgical procedure — drainage of parotid abscess
Typical site of service: Hospital inpatient, hospital outpatient department, or ambulatory surgical center depending on clinical severity and need for anesthesia or inpatient care

Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.

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CPT 42305: Complex Drainage of Parotid Gland Abscess

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Billing Code Overview

Service type: Surgical procedure — drainage of parotid abscess
Typical site of service: Hospital inpatient, hospital outpatient department, or ambulatory surgical center depending on clinical severity and need for anesthesia or inpatient care

Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.

Clinical & Coding Specifications

Clinical Context

A 48-year-old male presents to the emergency department with 3 days of progressive right preauricular swelling, severe pain, fever (38.9°C), trismus, and purulent drainage from the Stensen duct. Physical exam shows a fluctuant mass over the right parotid gland with erythema and tenderness. Point-of-care ultrasound confirms a complex, loculated parotid abscess involving the superficial lobe. After intravenous antibiotics and analgesia, the otolaryngology surgeon performs operative drainage under monitored anesthesia care: a curvilinear external incision overlying the abscess, blunt dissection to the capsule of the parotid, identification and protection of the facial nerve branches, drainage of purulent material, irrigation, placement of a small drain, and wound closure. Postoperative workflow includes pathology/culture submission of purulent material, wound care instructions, antibiotic and analgesic prescriptions, and follow-up within 48–72 hours.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the drainage required substantially greater work, e.g., extensive dissection or prolonged operative time due to deep loculations.
`23`	Unusual anesthesia	Use if a procedure is performed under general anesthesia when local/regional would normally be used due to patient condition.
`26`	Professional component	Use when reporting only the surgeon's professional service separate from technical facility billing.
`50`	Bilateral procedure	Use if both left and right parotid glands are drained during the same operative session.
`51`	Multiple procedures	Use when additional distinct procedures are performed in the same operative session and billed separately.
`52`	Reduced services	Use if the procedure was started but discontinued or performed partially due to intraoperative findings.
`59`	Distinct procedural service	Use to indicate a separate, unrelated procedure or service on the same day (distinct incision or anatomically separate site).
`62`	Two surgeons	Use when two surgeons from different specialties work together as primary surgeons performing distinct portions of the drainage.
`78`	Return to operating room for related procedure during global period	Use for re-operation for complications related to the initial drainage during the global period.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when an unrelated operative procedure is performed during the global period (not in the provided list but commonly relevant).

Taxonomy Code	Specialty	Notes
207S00000X	Otolaryngology	Primary specialty performing parotid gland abscess drainage; facial nerve knowledge required.
2080P0206X	Oral and Maxillofacial Surgery	May perform drainage when involvement of adjacent deep spaces or dental origin suspected.
207L00000X	Head and Neck Surgery	Surgeons with additional head and neck training often manage complex parotid pathology.
2084P0800X	General Surgery	May perform drainage in settings without ENT availability, especially emergently.
363L00000X	Family Medicine	In limited settings may perform incision and drainage; typically refers patients for operative management when complex.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K11.3`	Sialadenitis	Represents inflammation of a salivary gland that can progress to abscess requiring drainage.
`K11.5`	Sialolithiasis	Salivary duct stones can obstruct outflow and predispose to infection and abscess formation.
`L02.91`	Cutaneous abscess, unspecified site	Used when documenting abscess involving superficial tissues overlying the parotid region.
`J02.9`	Acute pharyngitis, unspecified	Oropharyngeal infections can be associated but less directly related; include when concurrent throat infection present.
`B95.89`	Other specified bacterial agents as the cause of diseases classified elsewhere	Use as an additional code to identify causative organism when culture returns positive and a bacterial etiology is documented.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`42320`	Excision of parotid tumor, partial superficial parotidectomy	Performed when abscess cavity requires formal parotidectomy or excision of infected gland tissue beyond simple drainage.
`41800`	Drainage of deep fascial space abscess, neck; incision without drainage of tooth origin	Performed when infection extends into deep neck spaces requiring additional neck drainage procedures.
`12032`	Repair, intermediate, wounds of face, ears, eyelids, nose, lips; 2.5 cm to 7.5 cm	Performed for layered closure of the external incision site after drainage when complex closure is required.
`49220`	Drainage of infected salivary gland (other than parotid)	Related salivary gland drainage codes; relevant when coding alternatives or additional salivary procedures.
`36415`	Collection of venous blood by venipuncture	Performed preoperatively for labs and culture studies associated with the drainage procedure.

Related Codes

CPT-42300-PAROTID-ABSCESS-DRAINAGE

CPT 42300: Drainage of Parotid Gland Abscess

CPT-42310-INCISION-DRAINAGE-SUBMANDIBULAR-SUBLINGUAL-ABSCESS

CPT 42310: Incision and Drainage of Submaxillary/Sublingual Salivary Gland Abscess

CPT-42320-SUBMAXILLARY-SALIVARY-GLAND-ABSCESS-DRAINAGE-EXTERNAL-APPROACH

CPT 42320: External Drainage of Submaxillary Salivary Gland Abscess

CPT-42330-SIALOLITHOTOMY-REMOVAL-SALIVARY-GLAND-STONE

CPT 42330: Sialolithotomy, Removal of Salivary Gland Stone

CPT-42335-SIALOLITHOTOMY-SALIVARY-GLAND-STONE-REMOVAL

CPT 42335: Sialolithotomy, Removal of Salivary Gland Stone

CPT-42340-SIALOLITHOTOMY-PAROTID-GLAND-REMOVAL

CPT 42340: Sialolithotomy, Removal of Parotid Gland Stone

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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.

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the drainage required substantially greater work, e.g., extensive dissection or prolonged operative time due to deep loculations.
`23`	Unusual anesthesia	Use if a procedure is performed under general anesthesia when local/regional would normally be used due to patient condition.
`26`	Professional component	Use when reporting only the surgeon's professional service separate from technical facility billing.
`50`	Bilateral procedure	Use if both left and right parotid glands are drained during the same operative session.
`51`	Multiple procedures	Use when additional distinct procedures are performed in the same operative session and billed separately.
`52`	Reduced services	Use if the procedure was started but discontinued or performed partially due to intraoperative findings.
`59`	Distinct procedural service	Use to indicate a separate, unrelated procedure or service on the same day (distinct incision or anatomically separate site).
`62`	Two surgeons	Use when two surgeons from different specialties work together as primary surgeons performing distinct portions of the drainage.
`78`	Return to operating room for related procedure during global period	Use for re-operation for complications related to the initial drainage during the global period.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when an unrelated operative procedure is performed during the global period (not in the provided list but commonly relevant).

Taxonomy Code	Specialty	Notes
207S00000X	Otolaryngology	Primary specialty performing parotid gland abscess drainage; facial nerve knowledge required.
2080P0206X	Oral and Maxillofacial Surgery	May perform drainage when involvement of adjacent deep spaces or dental origin suspected.
207L00000X	Head and Neck Surgery	Surgeons with additional head and neck training often manage complex parotid pathology.
2084P0800X	General Surgery	May perform drainage in settings without ENT availability, especially emergently.
363L00000X	Family Medicine	In limited settings may perform incision and drainage; typically refers patients for operative management when complex.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K11.3`	Sialadenitis	Represents inflammation of a salivary gland that can progress to abscess requiring drainage.
`K11.5`	Sialolithiasis	Salivary duct stones can obstruct outflow and predispose to infection and abscess formation.
`L02.91`	Cutaneous abscess, unspecified site	Used when documenting abscess involving superficial tissues overlying the parotid region.
`J02.9`	Acute pharyngitis, unspecified	Oropharyngeal infections can be associated but less directly related; include when concurrent throat infection present.
`B95.89`	Other specified bacterial agents as the cause of diseases classified elsewhere	Use as an additional code to identify causative organism when culture returns positive and a bacterial etiology is documented.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`42320`	Excision of parotid tumor, partial superficial parotidectomy	Performed when abscess cavity requires formal parotidectomy or excision of infected gland tissue beyond simple drainage.
`41800`	Drainage of deep fascial space abscess, neck; incision without drainage of tooth origin	Performed when infection extends into deep neck spaces requiring additional neck drainage procedures.
`12032`	Repair, intermediate, wounds of face, ears, eyelids, nose, lips; 2.5 cm to 7.5 cm	Performed for layered closure of the external incision site after drainage when complex closure is required.
`49220`	Drainage of infected salivary gland (other than parotid)	Related salivary gland drainage codes; relevant when coding alternatives or additional salivary procedures.
`36415`	Collection of venous blood by venipuncture	Performed preoperatively for labs and culture studies associated with the drainage procedure.

Related Codes

CPT-42300-PAROTID-ABSCESS-DRAINAGE

CPT 42300: Drainage of Parotid Gland Abscess

CPT-42310-INCISION-DRAINAGE-SUBMANDIBULAR-SUBLINGUAL-ABSCESS

CPT 42310: Incision and Drainage of Submaxillary/Sublingual Salivary Gland Abscess

CPT-42320-SUBMAXILLARY-SALIVARY-GLAND-ABSCESS-DRAINAGE-EXTERNAL-APPROACH

CPT 42320: External Drainage of Submaxillary Salivary Gland Abscess

CPT-42330-SIALOLITHOTOMY-REMOVAL-SALIVARY-GLAND-STONE

CPT 42330: Sialolithotomy, Removal of Salivary Gland Stone

CPT-42335-SIALOLITHOTOMY-SALIVARY-GLAND-STONE-REMOVAL

CPT 42335: Sialolithotomy, Removal of Salivary Gland Stone

CPT-42340-SIALOLITHOTOMY-PAROTID-GLAND-REMOVAL

CPT 42340: Sialolithotomy, Removal of Parotid Gland Stone

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

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CPT 42305: Complex Drainage of Parotid Gland Abscess

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Billing Code Overview

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

CPT 42305: Complex Drainage of Parotid Gland Abscess

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Billing Code Overview

CPT 42305: Complex Drainage of Parotid Gland Abscess

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What does CPT 42305 represent and in what settings is it typically performed?

Which modifiers are commonly used with CPT 42305 and when should they be considered?

Which specialties commonly perform parotid abscess drainage and what taxonomy codes are listed?

What related CPT codes should be considered when coding around CPT 42305?

Which ICD-10 diagnoses are listed as related to CPT 42305 and when are they relevant?

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What does CPT 42305 represent and in what settings is it typically performed?

Which modifiers are commonly used with CPT 42305 and when should they be considered?

Which specialties commonly perform parotid abscess drainage and what taxonomy codes are listed?

What related CPT codes should be considered when coding around CPT 42305?

Which ICD-10 diagnoses are listed as related to CPT 42305 and when are they relevant?

References