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Official Description

Thoracoscopy, surgical; with excision of mediastinal cyst, tumor, or mass

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

An excision of a mediastinal cyst, tumor, or mass is performed through a surgical technique known as thoracoscopy, which is also commonly referred to as video-assisted thoracoscopic surgery (VATS). This minimally invasive procedure allows surgeons to access the thoracic cavity using small incisions, which reduces recovery time and minimizes postoperative pain compared to traditional open surgery. During the procedure, the patient is positioned in a lateral decubitus position, which facilitates access to the thoracic structures. The surgeon inserts three or more trocars, which are specialized instruments that allow for the introduction of the thoracoscope and other surgical tools, depending on the specific location of the lesion being addressed. To enhance visualization of the surgical field, a pneumothorax is intentionally created, allowing the lung to collapse slightly and providing a clearer view of the mediastinal structures. Once the thoracoscope is in place, the surgeon evaluates the cyst, tumor, or mass, assessing its location and its relationship to surrounding anatomical structures. The pleura, which is the membrane surrounding the lungs, is incised over the lesion to gain access. If the procedure involves a cyst, the surgeon will open the cystic cavities, aspirate any fluid, and decompress the cyst before performing a complete excision of the cyst wall using blunt dissection and traction techniques. In cases where small remnants of the cyst wall are left attached to vital structures, the mucosal lining of the cyst may be cauterized to reduce the risk of recurrence. For solid tumors, the mass is carefully dissected away from surrounding tissues, and the chest incision may be widened to facilitate the removal of the tumor, which is then placed in an extracting bag to prevent contamination of the chest cavity with tumor cells. Following the excision, a chest tube is typically placed to allow for drainage, the trocars are removed, and the incisions are closed to complete the procedure.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for the excision of mediastinal cysts, tumors, or masses that may be causing symptoms or have the potential to lead to complications. The following conditions may warrant this surgical intervention:

  • Mediastinal Cysts - Fluid-filled sacs located in the mediastinum that may cause discomfort or respiratory issues.
  • Mediastinal Tumors - Abnormal growths in the mediastinal area that may be benign or malignant and require removal to prevent further health complications.
  • Mediastinal Masses - Any mass in the mediastinum that may be compressing surrounding structures, leading to symptoms such as chest pain, difficulty breathing, or other respiratory symptoms.

2. Procedure

The procedure involves several key steps to ensure the successful excision of the mediastinal lesion. Each step is critical for achieving the desired outcome while minimizing complications.

  • Step 1: Patient Positioning - The patient is placed in a lateral decubitus position, which allows optimal access to the thoracic cavity for the surgeon.
  • Step 2: Trocar Insertion - Three or more trocars are inserted into the thoracic cavity based on the location of the lesion. These trocars serve as access points for the thoracoscope and surgical instruments.
  • Step 3: Creation of Pneumothorax - A pneumothorax is created to enhance visualization of the surgical field by allowing the lung to collapse slightly, providing a clearer view of the mediastinal structures.
  • Step 4: Evaluation of the Lesion - The thoracoscope is used to evaluate the cyst, tumor, or mass, assessing its site and relationship to adjacent structures.
  • Step 5: Incision of the Pleura - The pleura over the lesion is incised to gain access to the cyst, tumor, or mass for excision.
  • Step 6: Excision of Cyst or Tumor - If a cyst is being excised, the cystic cavities are opened, aspirated, and decompressed, followed by complete excision of the cyst wall using blunt dissection and traction. If a solid tumor is present, it is dissected free from surrounding structures, and the chest incision may be widened to facilitate removal.
  • Step 7: Tumor Containment - The excised mass is placed in an extracting bag to prevent contamination of the chest wall with tumor cells.
  • Step 8: Placement of Chest Tube - A chest tube is placed to allow for drainage of any fluid or air that may accumulate postoperatively.
  • Step 9: Closure of Incisions - The trocars are removed, and the incisions are closed to complete the procedure.

3. Post-Procedure

Post-procedure care typically involves monitoring the patient for any complications, such as bleeding or infection. The chest tube will remain in place for a period to facilitate drainage and will be removed once the output is minimal and the lung has re-expanded adequately. Patients may experience some discomfort or pain at the incision sites, which can be managed with appropriate analgesics. Follow-up appointments will be necessary to assess recovery and ensure that there are no signs of recurrence of the cyst, tumor, or mass.

Short Descr THORACOSCOPY W/MEDIAST EXC
Medium Descr THORACOSCOPY W/EXC MEDIASTINAL CYST TUMOR/MASS
Long Descr Thoracoscopy, surgical; with excision of mediastinal cyst, tumor, or mass
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) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8I - Endoscopy - other
MUE 1
CCS Clinical Classification 42 - Other OR therapeutic procedures on respiratory system

This is a primary code that can be used with these additional add-on codes.

32674 Add-on Code MPFS Status: Active Code APC C Thoracoscopy, surgical; with mediastinal and regional lymphadenectomy (List separately in addition to code for primary procedure)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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.
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.
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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
GC This service has been performed in part by a resident under the direction of a teaching physician
LT Left side (used to identify procedures performed on the left side of the body)
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
RT Right side (used to identify procedures performed on the right side of the body)
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.
1994-01-01 Added First appearance in code book in 1994.
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