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Official Description

Nasal/sinus endoscopy, surgical; with destruction by cryoablation, posterior nasal nerve

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 31243 involves a surgical nasal and sinus endoscopy that specifically targets the destruction of the posterior nasal nerve (PNN) through cryoablation. This intervention is primarily indicated for patients suffering from chronic rhinorrhea, which is characterized by excessive mucus production due to a hyperactive PNN. This condition is often referred to as intractable vasomotor rhinitis. The goal of the procedure is to denervate the mucosa, thereby alleviating the nasal symptoms associated with this condition. During the procedure, a small endoscopic camera is utilized to provide visualization of the nasal cavity, allowing for precise intervention. Local anesthesia is administered through the use of surgical cotton wads that are soaked in a decongestant and anesthetic, which are strategically placed in various areas of the nasal cavity to ensure effective numbing. Following this, an intranasal anesthetic and vasoconstrictive agent are injected to further enhance comfort. The procedure involves the introduction of a radiofrequency delivery device, which is designed to fit into the sphenopalatine regions and the inferior turbinate. This device applies low power radiofrequency energy to disrupt the nerve by generating heat in the targeted mucosal areas at the back of the nose. After completing the procedure on one side, the same steps are repeated on the opposite side. Additionally, the procedure can also involve the use of a hand-triggered cryotherapy device that employs nitrous oxide to achieve controlled freezing of the target mucosal areas, further contributing to the destruction of the PNN.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for the following conditions:

  • Chronic Rhinorrhea - This condition is characterized by excessive nasal mucus production, which can significantly impact a patient's quality of life.
  • Intractable Vasomotor Rhinitis - A form of rhinitis that is not responsive to standard treatments, often resulting from a hyperactive posterior nasal nerve.

2. Procedure

The procedure consists of several key steps that ensure effective treatment of the posterior nasal nerve:

  • Step 1: Anesthesia Administration - Local anesthesia is first administered by packing wads of surgical cotton soaked in a decongestant and anesthetic into various areas of the nasal cavity, such as the back of the middle meatus and the side of the middle turbinate. This allows the anesthetic to take effect and prepare the area for the procedure.
  • Step 2: Intranasal Anesthetic Injection - Following the initial anesthesia, an intranasal anesthetic and vasoconstrictive agent are injected to further numb the area and reduce blood flow, facilitating a clearer view during the endoscopic procedure.
  • Step 3: Endoscopic Visualization - A small nasal endoscopic camera is inserted into the nasal cavity to provide visualization of the surgical field, allowing the physician to accurately locate the posterior nasal nerve.
  • Step 4: Application of Radiofrequency Energy - A radiofrequency delivery device, designed to fit into the sphenopalatine regions and the inferior turbinate, is introduced. Low power radiofrequency energy is applied through the device's tip to generate heat, which disrupts the nerve by targeting the mucosal areas at the back of the nose where the nerve typically runs.
  • Step 5: Cryoablation - A hand-triggered cryotherapy device may be used, which employs nitrous oxide to achieve very low temperatures. This device is inserted and used to apply precisely controlled freezing to the target mucosal areas, effectively destroying the posterior nasal nerve.
  • Step 6: Repeat Procedure - After completing the procedure on one side of the nasal cavity, the same steps are repeated on the opposite side to ensure comprehensive treatment.

3. Post-Procedure

Post-procedure care typically involves monitoring for any immediate complications and managing discomfort. Patients may experience some nasal congestion and discomfort following the procedure, which is generally temporary. It is important for patients to follow any specific post-operative instructions provided by their healthcare provider, which may include recommendations for pain management and follow-up appointments to assess the effectiveness of the procedure. Additionally, patients should be advised on signs of potential complications, such as excessive bleeding or infection, and when to seek medical attention.

Short Descr NSL/SINUS NDSC CRYOABLTJ PNN
Medium Descr NASAL/SINUS NDSC DSTRJ CRYOABLATION PST NSL NRV
Long Descr Nasal/sinus endoscopy, surgical; with destruction by cryoablation, posterior nasal nerve
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) 2 - 150% payment adjustment does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 1 - Statutory 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
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).
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)
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
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).
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.
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.)
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
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
GW Service not related to the hospice patient's terminal condition
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
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
2024-01-01 Added Code Added.
Code
Description
Code
Description
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