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Official Description

Laryngoscopy, direct, operative, with biopsy; with operating microscope or telescope

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 31536 refers to a direct laryngoscopy that is performed operatively with the inclusion of a biopsy. This procedure utilizes advanced visualization techniques, specifically through the use of an operating microscope or telescope, to enhance the physician's ability to examine the laryngeal structures in detail. Direct laryngoscopy is a critical diagnostic and therapeutic tool that allows for the direct observation of the larynx, trachea, and surrounding anatomical areas. The procedure typically involves the insertion of a rigid or flexible laryngoscope, with the rigid type being more commonly employed in surgical settings. The laryngoscope is introduced through the mouth, often under general anesthesia, enabling the physician to thoroughly inspect the oral cavity, oropharynx, hypopharynx, larynx, and trachea. During this examination, if any lesions are identified, biopsy forceps are utilized to obtain tissue samples for further pathological analysis. The use of an operating microscope or telescope during this procedure is essential for providing enhanced magnification and illumination, which aids in the accurate evaluation of mucosal surfaces and any lesions present. It is important to note that CPT® Code 31535 should be used when the procedure is conducted without the aid of an operating microscope or telescope, while CPT® Code 31536 is specifically designated for cases where these advanced visualization tools are employed.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The indications for performing a direct laryngoscopy with biopsy, as described by CPT® Code 31536, include the following:

  • Suspicion of Laryngeal Lesions - This procedure is indicated when there is a clinical suspicion of lesions in the larynx that may require further evaluation or intervention.
  • Persistent Hoarseness - Patients presenting with unexplained or persistent hoarseness may undergo this procedure to identify underlying causes.
  • Difficulty Breathing - In cases where patients experience stridor or other breathing difficulties, direct laryngoscopy can help assess the airway and identify obstructions.
  • Unexplained Throat Pain - This procedure may be indicated for patients with persistent throat pain that does not respond to standard treatments.
  • Evaluation of Tumors - Direct laryngoscopy with biopsy is often performed to evaluate suspected tumors in the laryngeal region.

2. Procedure

The procedure for CPT® Code 31536 involves several critical steps, which are detailed as follows:

  • Step 1: Anesthesia Administration - The procedure typically begins with the administration of general anesthesia to ensure the patient is comfortable and completely relaxed during the examination.
  • Step 2: Insertion of the Laryngoscope - Once the patient is anesthetized, the physician carefully inserts a rigid or flexible laryngoscope through the mouth. The choice of scope depends on the specific requirements of the procedure and the anatomy of the patient.
  • Step 3: Visualization of Laryngeal Structures - The laryngoscope allows the physician to directly visualize the larynx, trachea, and surrounding structures. The use of an operating microscope or telescope may be employed at this stage to enhance visibility and detail.
  • Step 4: Identification of Lesions - During the examination, the physician inspects the mucosal surfaces for any abnormalities, such as lesions or tumors, that may require further investigation.
  • Step 5: Biopsy Collection - If any suspicious lesions are identified, biopsy forceps are utilized to obtain tissue samples from the affected area. This step is crucial for histopathological analysis to determine the nature of the lesions.
  • Step 6: Completion of the Procedure - After the biopsy is completed, the laryngoscope is carefully removed, and the procedure is concluded. The patient is then monitored as they recover from anesthesia.

3. Post-Procedure

Post-procedure care following a direct laryngoscopy with biopsy includes monitoring the patient for any immediate complications related to anesthesia or the procedure itself. Patients may experience temporary hoarseness, throat discomfort, or mild bleeding at the biopsy site. It is essential to provide instructions regarding voice rest and hydration to facilitate recovery. Follow-up appointments may be scheduled to discuss biopsy results and any further management required based on the findings. Additionally, patients should be advised to report any unusual symptoms, such as increased pain, difficulty breathing, or significant bleeding, to their healthcare provider promptly.

Short Descr LARYNGOSCOPY W/BX & OP SCOPE
Medium Descr LARYNGOSCOPY W/BIOPSY MICROSCOPE/TELESCOPE
Long Descr Laryngoscopy, direct, operative, with biopsy; with operating microscope or telescope
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) 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 31526  Laryngoscopy direct, with or without tracheoscopy; diagnostic, with operating microscope or telescope
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) P8H - Endoscopy - laryngoscopy
MUE 1
CCS Clinical Classification 35 - Tracheoscopy and laryngoscopy with biopsy
GC This service has been performed in part by a resident under the direction of a teaching physician
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).
SG Ambulatory surgical center (asc) facility service
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.
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).
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.
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).
AG Primary physician
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
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
LT Left side (used to identify procedures performed on the left side of the body)
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
RT Right side (used to identify procedures performed on the right side of the body)
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
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2006-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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