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Official Description

Excision of parotid tumor or parotid gland; lateral lobe, with dissection and preservation of facial nerve

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 42415 involves the excision of a tumor located in the lateral lobe of the parotid gland or the removal of the lateral lobe itself. The parotid gland is the largest of the three major paired salivary glands, situated below and in front of the ear. This procedure is significant as it not only involves the removal of potentially cancerous or problematic tissue but also emphasizes the importance of preserving the facial nerve during the operation. The facial nerve is crucial for facial movements, and its preservation is a key aspect of this surgical intervention. The surgical approach typically includes an incision made just in front of the ear, which is then extended around the ear lobe and along the mandible. This allows for the elevation of a skin flap to expose the parotid gland adequately. The procedure requires careful dissection to separate the gland from surrounding structures, including the sternocleidomastoid muscle and the digastric muscle, while meticulously identifying and preserving the facial nerve branches. The use of a nerve stimulator may be employed to ensure the safety of the facial nerve during deeper dissection. Overall, this procedure is critical for addressing issues related to the parotid gland while maintaining the integrity of the facial nerve, thereby minimizing the risk of postoperative complications related to facial movement.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The excision of a parotid tumor or the lateral lobe of the parotid gland is indicated for various conditions that may affect the gland. These include:

  • Parotid Tumor: Presence of a tumor in the lateral lobe of the parotid gland, which may be benign or malignant.
  • Salivary Gland Disorders: Conditions that lead to dysfunction or disease of the parotid gland, necessitating surgical intervention.
  • Facial Nerve Preservation: Situations where the tumor or affected tissue is in close proximity to the facial nerve, requiring careful dissection to preserve nerve function.

2. Procedure

The procedure for excising a parotid tumor or the lateral lobe of the parotid gland involves several critical steps:

  • Step 1: An incision is made just in front of the auricle of the ear, extending around the ear lobe and along the mandible. This incision allows for adequate access to the parotid gland.
  • Step 2: A skin flap is elevated to expose the parotid gland. Care is taken to ensure that surrounding tissues are preserved during this elevation.
  • Step 3: The inferior aspect of the parotid gland is dissected off the sternocleidomastoid muscle, allowing for better visualization and access to the gland.
  • Step 4: Dissection continues to the digastric muscle, further exposing the area around the parotid gland.
  • Step 5: The tissue anterior to the tip and superior to the tragus is carefully dissected to expose the trunk of the facial nerve, which is critical to preserve during the procedure.
  • Step 6: The lateral lobe of the parotid gland or the parotid tumor is excised. If deeper dissection is necessary, a nerve stimulator is utilized to identify the branches of the facial nerve.
  • Step 7: The parotid gland is divided and retracted to provide a clear view of the nerve branches, ensuring they are preserved during the excision.
  • Step 8: The parotid gland or tumor is carefully dissected free from the facial nerve and its branches, which are preserved to maintain facial function.
  • Step 9: Bleeding is controlled using electrocautery to minimize blood loss during the procedure.
  • Step 10: A drain is placed through a separate incision behind the ear to prevent fluid accumulation post-surgery.
  • Step 11: Finally, the platysma muscle, subcutaneous tissue, and skin are closed in layers to ensure proper healing and minimize scarring.

3. Post-Procedure

Post-procedure care involves monitoring for any complications, such as bleeding or infection, and ensuring that the drain is functioning properly. Patients may experience swelling and discomfort in the surgical area, which can be managed with appropriate pain relief measures. Follow-up appointments are essential to assess healing and to check for any signs of complications. Patients are advised to avoid strenuous activities and to follow specific care instructions provided by their healthcare provider to promote optimal recovery.

Short Descr EXCISE PAROTID GLAND/LESION
Medium Descr EXC PRTD TUM/PRTD GLND LAT DSJ&PRSRV FACIAL NR
Long Descr Excision of parotid tumor or parotid gland; lateral lobe, with dissection and preservation of facial nerve
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) 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 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) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 33 - Other OR therapeutic procedures on nose, mouth and pharynx
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
GC This service has been performed in part by a resident under the direction of a teaching physician
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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.
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).
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.
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.)
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).
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
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
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
SA Nurse practitioner rendering service in collaboration with a physician
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
2013-01-01 Changed Medium Descriptor changed.
Pre-1990 Added Code added.
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