CPT 69505 Modified Radical Mastoidectomy Reimbursement | OpenPayer

Summary & Overview

CPT 69505: Modified Radical Mastoidectomy

CPT code 69505 denotes a modified radical mastoidectomy, an otologic surgical procedure that removes diseased mastoid air cells and portions of mastoid bone. Nationally, this code represents definitive surgical management for chronic mastoiditis, cholesteatoma, and other complications of middle ear disease; it carries implications for hospital and ambulatory surgery center case mix, resource utilization, and specialist surgical workflows. Key payers commonly involved in coverage and claims for this procedure include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will find a concise overview of clinical context, coding definition, and typical sites of service; benchmarking and utilization patterns across major payers where available; and policy or billing considerations relevant to otologic surgery claims. The publication outlines common modifiers and claim-level elements used with this surgical code, discusses billing and documentation considerations, and summarizes what to expect in payer adjudication and payment pathways. This material is intended for clinicians, coding professionals, and policy analysts seeking clear, national-level context for CPT code 69505 and its role in surgical ear disease management.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 69505mastoidectomyotologic surgeryENT surgerysurgical codesambulatory surgery centerhospital operating roomprocedure codingsurgical billingear disease

Billing Code Overview

CPT code 69505 is a modified radical mastoidectomy, a surgical procedure that typically involves removal of mastoid air cells and diseased mastoid bone to address chronic ear disease or complications of otitis media. This procedure is classified as an otologic surgical service.

Service type: Surgical procedure (otologic surgery)
Typical site of service: Hospital operating room or ambulatory surgery center

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

Clinical & Coding Specifications

Clinical Context

A 45-year-old male presents with chronic otorrhea, persistent mastoid air cell infection, and progressive conductive hearing loss despite prolonged medical therapy. Imaging (CT temporal bones) demonstrates coalescent mastoiditis with destruction of mastoid septations and involvement of the antrum and epitympanum. The otolaryngology team schedules a 69505 modified radical mastoidectomy to remove diseased mastoid air cells, exteriorize the mastoid cavity, and create drainage while preserving or addressing the tympanic membrane and ossicular chain as clinically indicated. The typical clinical workflow includes preoperative evaluation and clearance, perioperative antibiotics, intraoperative microscopy and suctioning of infected debris, removal of diseased mastoid bone and soft tissue, possible tympanoplasty or ossicular work if indicated, postoperative packing and dressing, and outpatient follow-up with wound and audiologic assessment.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the work required is substantially greater than typical for `69505` due to extensive disease or intraoperative complexity.

CPT 69554: Excision of Aural Glomus Tumor with Mastoidectomy

CPT-69501-TRANSMASTOID-ANTROTOMY-SIMPLE-MASTOIDECTOMY

CPT 69501: Transmastoid Antrotomy (Simple Mastoidectomy)

CPT-69511-RADICAL-MASTOIDECTOMY-SURGICAL-OTOLOGY

CPT 69511: Radical Mastoidectomy, Surgical Otologic Procedure

CPT-69550-AURAL-GLOMUS-TUMOR-EXCISION-EXTERNAL-AUDITORY-CANAL

CPT 69550: Excision of Aural Glomus Tumor via External Auditory Canal

CPT-69502-COMPLETE-MASTOIDECTOMY

CPT 69502: Complete Mastoidectomy

CPT-69530-PETROUS-TEMPORAL-BONE-RESECTION-OTOLOGIC-SURGERY

CPT 69530: Petrous Temporal Bone Resection for Middle Ear and Mastoid Disease

CPT-69535-TEMPORAL-BONE-RESECTION-EXTERNAL-EAR-APPROACH

CPT 69535: Temporal Bone Resection via External Ear Approach

CPT-69552-AURAL-GLOMUS-TUMOR-MASTOID-APPROACH-EXCISION

CPT 69552: Aural Glomus Tumor Excision via Mastoid Approach

CPT-69540-EAR-POLYP-EXCISION

CPT 69540: Excision of Polyp from Inside the Ear

Taxonomy Code	Specialty	Notes
`207Y00000X`	Otolaryngology (ENT)	Primary specialty performing mastoid surgery.
`207K00000X`	Neurotology	Subspecialty focused on complex ear and skull base surgery; commonly performs modified radical mastoidectomy for advanced disease.
`208800000X`	Audiology	Provides pre- and postoperative audiologic assessment; typically involved in care though not billing the surgical CPT.
`310400000X`	Anesthesiology	Provides perioperative anesthesia services for `69505`.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`H70.9`	Unspecified mastoiditis	Mastoid infection that typically necessitates mastoidectomy when medical therapy fails or when complications occur.
`H71.93`	Chronic mastoiditis, unspecified ear	Chronic infection and bony destruction of mastoid air cells often treated with modified radical mastoidectomy.
`H72.8`	Other perforation of tympanic membrane	Tympanic membrane perforation may coexist with chronic ear disease prompting combined tympanoplasty with mastoidectomy.
`H74.2`	Conductive hearing loss, unspecified	Conductive hearing loss secondary to tympanic membrane or ossicular pathology addressed during mastoid surgery.
`J02.9`	Acute pharyngitis, unspecified	Upper airway infections can be associated comorbid conditions; not a direct indication but may influence perioperative management.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`69801`	Mastoidectomy, radical, with or without tympanoplasty	Performed for more extensive disease; may be an alternative or extension if disease mandates more radical resection than `69505`.
`69636`	Tympanoplasty, without mastoidectomy; with graft	Tympanic membrane repair commonly performed concurrently or staged with `69505` when tympanic membrane perforation or chronic perforation persists.
`69620`	Ossiculoplasty, including repair of ossicular chain	Performed during the same operative session or in a staged procedure to restore conductive hearing when ossicles are eroded by chronic disease.
`69110`	Myringotomy with tympanostomy tube insertion (complex)	May be performed preoperatively for drainage or in children as alternative initial intervention prior to mastoid surgery.
`69990`	Unlisted procedure, otologic	Used for procedures related to the ear that do not have a specific CPT code and may be reported when adjunct techniques are performed with `69505`.

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