Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Sinusotomy, maxillary (antrotomy); intranasal

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 31020 refers to a sinusotomy of the maxillary sinus, specifically an antrotomy performed intranasally. This surgical intervention involves the use of local anesthesia and a vasoconstrictor, which are administered through the nasal passage. The procedure begins with the injection along the lateral nasal wall, positioned below the inferior turbinate, to minimize discomfort and control bleeding during the operation. A trocar is then utilized to puncture the maxillary sinus through the same intranasal route, allowing access to the sinus cavity. Following the initial puncture, the opening is enlarged using through-cutting forceps, facilitating better access for drainage. The primary objective of this procedure is to drain the maxillary sinus, which may be necessary in cases of infection or blockage. During the process, specimens may be collected for culture and sensitivity testing to identify any infectious agents present. Finally, the sinus is irrigated to clear out any remaining debris or fluid, promoting healing and recovery. This procedure is typically indicated for conditions affecting the maxillary sinus, such as chronic sinusitis or other obstructive processes.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The sinusotomy procedure, as described by CPT® Code 31020, is indicated for various conditions affecting the maxillary sinus. These indications may include:

  • Chronic Sinusitis - A prolonged inflammation of the sinus lining that can lead to blockage and infection.
  • Sinus Obstruction - Physical blockages within the sinus cavity that prevent normal drainage and airflow.
  • Sinus Infections - Acute or recurrent infections that necessitate drainage to alleviate symptoms and promote healing.
  • Collection of Specimens - Situations where obtaining tissue or fluid samples is necessary for diagnostic purposes, such as culture and sensitivity testing.

2. Procedure

The sinusotomy procedure involves several key steps to ensure effective access and treatment of the maxillary sinus. The steps are as follows:

  • Step 1: Anesthesia Administration - The procedure begins with the administration of a local anesthetic and a vasoconstrictor. This is done through the nasal passage, specifically along the lateral nasal wall below the inferior turbinate, to minimize discomfort and control bleeding during the procedure.
  • Step 2: Puncturing the Maxillary Sinus - A trocar is then introduced through the nasal cavity to puncture the maxillary sinus. This step is crucial as it provides the initial access to the sinus cavity.
  • Step 3: Enlarging the Opening - Once the sinus is punctured, through-cutting forceps are used to enlarge the opening. This enlargement is necessary to facilitate adequate drainage and access for further intervention.
  • Step 4: Draining the Sinus - The primary goal of the procedure is to drain the maxillary sinus. This step helps to relieve pressure and remove any infected or obstructive material present within the sinus.
  • Step 5: Specimen Collection - During the drainage process, specimens may be obtained for culture and sensitivity testing. This is important for identifying any pathogens that may be causing infection.
  • Step 6: Irrigation of the Sinus - Finally, the sinus is irrigated to clear out any remaining debris or fluid. This step promotes healing and helps to ensure that the sinus is free of obstructions.

3. Post-Procedure

After the sinusotomy procedure, patients may require specific post-procedure care to ensure proper recovery. This may include monitoring for any signs of complications, such as excessive bleeding or infection. Patients are typically advised to follow up with their healthcare provider to assess the healing process and to discuss any further treatment options if necessary. Additionally, instructions may be provided regarding nasal care, including the use of saline sprays or other medications to promote healing and maintain sinus health. It is important for patients to adhere to these guidelines to facilitate a smooth recovery and to minimize the risk of recurrence of sinus issues.

Short Descr EXPLORATION MAXILLARY SINUS
Medium Descr SINUSOTOMY MAXILLARY ANTROTOMY INTRANASAL
Long Descr Sinusotomy, maxillary (antrotomy); intranasal
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) 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.
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 33 - Other OR therapeutic procedures on nose, mouth and pharynx
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).
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.
RT Right side (used to identify procedures performed on the right 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).
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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.)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
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
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
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
2011-01-01 Changed Short description changed.
Pre-1990 Added Code added.
Code
Description
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"