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Official Description

Mediastinoscopy; includes biopsy(ies) of mediastinal mass (eg, lymphoma), when performed

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Mediastinoscopy is a surgical procedure utilized for the evaluation of mediastinal lesions, particularly in patients suspected of having bronchogenic carcinoma. This procedure involves making a small incision above the suprasternal notch, which is located between the borders of the sternocleidomastoid muscle. The incision is carefully extended down to the pretracheal fascia, which is then divided to allow access to the mediastinum. A mediastinoscope, a specialized instrument, is inserted behind the suprasternal notch and advanced behind the aortic arch into the superior mediastinum. This allows for a thorough examination of the mediastinum, including the carina and the main bronchi, for any lesions, tumors, diseased tissue, or other abnormalities. During the procedure, biopsies of any identified masses or lesions, such as lymphoma, may be performed through the endoscope as necessary. The procedure concludes with the withdrawal of the mediastinoscope and the closure of the incisions. This technique is essential for obtaining tissue samples for diagnosis and for assessing treatment options for various mediastinal conditions.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The indications for performing a mediastinoscopy include the following:

  • Evaluation of Mediastinal Lesions This procedure is indicated for assessing mediastinal masses, particularly when there is a suspicion of malignancy, such as lymphoma or bronchogenic carcinoma.
  • Staging of Lung Cancer Mediastinoscopy may be performed to stage lung cancer by examining and obtaining biopsies of mediastinal lymph nodes.
  • Assessment of Treatment Options The procedure is utilized to gather information that aids in determining appropriate treatment strategies for patients with suspected or confirmed mediastinal conditions.

2. Procedure

The mediastinoscopy procedure involves several key steps, which are detailed as follows:

  • Step 1: Incision A small incision is made above the suprasternal notch, positioned between the borders of the sternocleidomastoid muscle. This incision allows access to the mediastinum.
  • Step 2: Division of Pretracheal Fascia The incision is extended down to the pretracheal fascia, which is then carefully divided to facilitate the insertion of the mediastinoscope.
  • Step 3: Insertion of Mediastinoscope The mediastinoscope is inserted behind the suprasternal notch and advanced behind the aortic arch into the superior mediastinum, providing a view of the area.
  • Step 4: Examination of Mediastinum The mediastinoscope is advanced to the level of the carina, where the area is examined for any lesions, tumors, diseased tissue, or other abnormalities, including the main bronchi.
  • Step 5: Biopsy If any masses or lesions are identified, biopsies may be taken through the endoscope as needed to obtain tissue samples for further analysis.
  • Step 6: Withdrawal and Closure After the examination and any necessary biopsies are completed, the mediastinoscope is withdrawn, and the incisions are closed to complete the procedure.

3. Post-Procedure

Post-procedure care following a mediastinoscopy typically involves monitoring the patient for any complications, such as bleeding or infection. Patients may experience some discomfort at the incision site, which can be managed with appropriate pain relief measures. Recovery time may vary, but patients are generally advised to rest and avoid strenuous activities for a specified period. Follow-up appointments may be scheduled to discuss biopsy results and further treatment options based on the findings from the procedure.

Short Descr MEDIASTINOSCPY W/MEDSTNL BX
Medium Descr MEDIASTINOSCOPY INCLUDES MEDIASTINAL MASS BIOPSY
Long Descr Mediastinoscopy; includes biopsy(ies) of mediastinal mass (eg, lymphoma), when performed
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
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) 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
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8I - Endoscopy - other
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).
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).
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.
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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
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2016-01-01 Added Added
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