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Official Description

Nasopharyngoscopy, surgical, with dilation of eustachian tube (ie, balloon dilation); unilateral

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Balloon dilation of the Eustachian tube(s) is a surgical procedure performed endoscopically through the nasal passage. This technique utilizes a balloon catheter that is inserted into the Eustachian tube, which connects the middle ear to the nasopharynx. The primary purpose of this procedure is to improve the patency of the Eustachian tube and alleviate chronic ear congestion that may arise from conditions such as middle ear infections or mastoid infections. The Eustachian tube plays a crucial role in equalizing pressure and ventilating the ear, as it opens during actions like swallowing or yawning. During the procedure, a saline-filled balloon catheter is carefully introduced into the Eustachian tube using an endoscope, which is a specialized instrument designed for this purpose. Once the balloon is correctly positioned, it is inflated to maintain pressure for a few minutes, effectively stretching and opening the tube. After sufficient dilation, the balloon is deflated and removed, followed by the withdrawal of the endoscope and catheter. This procedure is typically conducted under general anesthesia to ensure patient comfort. For billing purposes, CPT® Code 69705 is used to report the dilation of one Eustachian tube, while CPT® Code 69706 is designated for the dilation of both tubes.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure of nasopharyngoscopy with dilation of the Eustachian tube is indicated for patients experiencing chronic ear congestion, which may be due to various underlying conditions. The following are specific indications for performing this procedure:

  • Chronic Ear Congestion Persistent blockage or pressure in the ear that does not resolve with conservative treatments.
  • Middle Ear Infections Recurrent or chronic otitis media that may lead to fluid accumulation and pressure in the middle ear.
  • Mastoid Infections Infections affecting the mastoid bone that can impact Eustachian tube function.

2. Procedure

The procedure involves several key steps to ensure effective dilation of the Eustachian tube:

  • Step 1: Anesthesia Administration The patient is typically placed under general anesthesia to ensure comfort and immobility during the procedure.
  • Step 2: Endoscope Insertion An endoscope, a thin, flexible tube with a camera, is inserted through the nose to visualize the Eustachian tube and surrounding structures.
  • Step 3: Balloon Catheter Placement A saline-filled balloon catheter is introduced through the endoscope and carefully navigated into the Eustachian tube.
  • Step 4: Balloon Inflation Once the balloon is positioned correctly within the Eustachian tube, it is inflated to a predetermined pressure, which helps to stretch and open the tube.
  • Step 5: Pressure Maintenance The balloon is maintained in the inflated position for a few minutes to ensure adequate dilation of the Eustachian tube.
  • Step 6: Balloon Deflation and Removal After the dilation period, the balloon is deflated and removed from the Eustachian tube, followed by the withdrawal of the endoscope and catheter.

3. Post-Procedure

After the procedure, patients may experience some temporary discomfort or pressure in the ear, which is generally expected. Post-procedure care may include monitoring for any signs of complications, such as infection or excessive bleeding. Patients are typically advised to avoid activities that may increase pressure in the ears, such as flying or diving, for a short period following the procedure. Follow-up appointments may be scheduled to assess the effectiveness of the dilation and to monitor the patient's recovery.

Short Descr NPS SURG DILAT EUST TUBE UNI
Medium Descr SURG NASOPHARYNGOSCOPY DILAT EUSTACHIAN TUBE UNI
Long Descr Nasopharyngoscopy, surgical, with dilation of eustachian tube (ie, balloon dilation); unilateral
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 3 - Special payment adjustment rules for multiple endoscopic procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
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.
Endoscopic Base Code 31231  Nasal endoscopy, diagnostic, unilateral or bilateral (separate procedure)
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) none
MUE 1
RT Right side (used to identify procedures performed on the right side of the body)
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.
LT Left side (used to identify procedures performed on the left side of the body)
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).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
GZ Item or service expected to be denied as not reasonable and necessary
SG Ambulatory surgical center (asc) facility service
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2021-01-01 Added Code added.
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