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Official Description

Repair round window fistula

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 69667 involves the surgical repair of a round window fistula, which is an abnormal opening or communication between the middle ear and the inner ear. This condition can lead to various auditory and balance issues, as the integrity of the inner ear is compromised. The round window is one of two key membranes in the inner ear, and its proper function is essential for normal hearing and balance. During the procedure, the physician makes an incision in the posterior wall of the ear canal to access the affected area. A tympanomeatal flap, which is a section of the ear canal skin and underlying tissue, is carefully elevated to expose the round window. The repair is performed using a graft, typically derived from mesodermal or other soft tissue, to close the fistula and restore the normal anatomy of the ear. After the repair is completed, the tympanomeatal flap is repositioned, and the incision is sutured closed, ensuring that the ear is properly sealed and promoting healing.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure for repairing a round window fistula is indicated in the following situations:

  • Fistula Formation The presence of a fistula in the round window, which can lead to hearing loss or balance disorders.
  • Symptoms of Inner Ear Dysfunction Patients may exhibit symptoms such as vertigo, tinnitus, or fluctuating hearing loss, which necessitate surgical intervention.
  • Failure of Conservative Management When non-surgical treatments have not resolved the symptoms or the fistula, surgical repair becomes necessary.

2. Procedure

The surgical procedure for repairing a round window fistula involves several critical steps:

  • Incision The surgeon begins by making an incision in the posterior wall of the ear canal. This incision provides access to the underlying structures of the ear.
  • Tympanomeatal Flap Creation A tympanomeatal flap is then created by carefully elevating a section of skin and underlying tissue from the ear canal. This flap is essential for exposing the round window.
  • Exposure of the Round Window Once the tympanomeatal flap is elevated, the surgeon can visualize the round window. This step is crucial for assessing the fistula and planning the repair.
  • Repair of the Fistula The actual repair involves using a graft, typically a mesodermal or other soft tissue graft, to close the fistula. This graft helps restore the normal anatomy and function of the round window.
  • Repositioning the Tympanomeatal Flap After the fistula has been repaired, the tympanomeatal flap is carefully replaced to cover the surgical site.
  • Closure of the Incision Finally, the meatal incision is closed with sutures, ensuring that the ear canal is sealed and promoting proper healing.

3. Post-Procedure

Post-procedure care following the repair of a round window fistula typically includes monitoring for any signs of complications, such as infection or persistent symptoms. Patients may be advised to avoid water exposure in the ear and to refrain from activities that could increase pressure in the ear, such as heavy lifting or straining. Follow-up appointments are essential to assess healing and ensure that the repair is successful. The expected recovery time may vary, but patients are generally encouraged to rest and follow their physician's instructions for optimal recovery.

Short Descr REPAIR MIDDLE EAR STRUCTURES
Medium Descr REPAIR ROUND WINDOW FISTULA
Long Descr Repair round window fistula
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5E - Ambulatory procedures - other
MUE 1
CCS Clinical Classification 26 - Other therapeutic ear procedures
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
LT Left side (used to identify procedures performed on the left side of the body)
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
GC This service has been performed in part by a resident under the direction of a teaching physician
RT Right side (used to identify procedures performed on the right side of the body)
SG Ambulatory surgical center (asc) facility service
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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