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Official Description

Percutaneous laminotomy/laminectomy (interlaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy), any method, under indirect image guidance (eg, fluoroscopic, CT), single or multiple levels, unilateral or bilateral; lumbar

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A percutaneous laminotomy or laminectomy is a minimally invasive surgical procedure aimed at decompressing neural elements in the lumbar region of the spine. This procedure is performed through an interlaminar approach, which involves accessing the spinal canal between the laminae of adjacent vertebrae. The primary goal of this intervention is to relieve pressure on the spinal nerves, which may be caused by conditions such as herniated discs, bone spurs, or thickened ligaments. The procedure can be performed with or without additional techniques such as ligamentous resection, discectomy, facetectomy, or foraminotomy, depending on the specific needs of the patient. To ensure precision, the procedure is conducted under indirect image guidance, utilizing technologies such as fluoroscopy or computed tomography (CT). This imaging support allows the surgeon to visualize the anatomy of the spine accurately and to navigate the instruments safely to the target area. The use of percutaneous devices facilitates access to the interlaminar space while minimizing tissue disruption. Contrast material may be injected into the epidural space during the procedure to enhance visualization of the surrounding structures and to assess the effectiveness of the decompression achieved. Overall, this technique is designed to provide relief from pain and neurological symptoms while promoting a quicker recovery compared to traditional open surgical methods.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The percutaneous laminotomy or laminectomy procedure is indicated for various conditions affecting the lumbar spine, particularly those that lead to neural compression. The following are explicitly provided indications for this procedure:

  • Herniated Discs - The presence of ruptured disc fragments or bulging nucleus pulposus that compresses spinal nerves.
  • Spinal Stenosis - Narrowing of the spinal canal that can lead to nerve compression and associated symptoms.
  • Bone Spurs - Osteophytes that may develop due to degenerative changes and encroach upon nerve pathways.
  • Thickened Ligaments - Conditions such as ligamentum flavum hypertrophy that contribute to neural element compression.

2. Procedure

The procedure involves several detailed steps to ensure effective decompression of neural elements in the lumbar spine:

  • Preoperative Imaging - Prior to the procedure, a separate reportable MRI, CT, or myelography is performed to identify the target entry site over the spine. This imaging is crucial for planning the surgical approach.
  • Accessing the Interlaminar Space - Under indirect image guidance, such as fluoroscopy or CT, a guiding portal and inner trocar are inserted percutaneously. This is done inferior to the vertebral segment being decompressed and lateral to the spinous process margin.
  • Advancing the Trocar - The guiding portal and inner trocar are advanced toward the inferior vertebral segment lamina, targeting the border of the interlaminar space while utilizing imaging guidance for accuracy.
  • Creating the Access Portal - Once the inner trocar is removed, a hollow access portal remains in the interlaminar space. This portal is secured against the skin surface using plate and guide devices to ensure proper placement of surgical instruments.
  • Bone Sculpting - A bone sculptor is advanced through the portal to the free edge of the lamina. Small pieces of bone are removed from the superior and inferior lamina, effectively performing the laminotomy or laminectomy.
  • Resecting Ligamentum Flavum - After enlarging the interlaminar space, the bone sculptor is removed, and a tissue sculptor is advanced through the portal to resect the ligamentum flavum as needed.
  • Foraminotomy and Additional Decompression - The openings under the facet joints where the nerve runs through are examined, and a portion of the bone around the opening may be removed for additional pressure relief, if necessary. Any ruptured disc fragments or bulging nucleus pulposus are also removed to decompress the nerve(s).
  • Confirming Decompression - The effectiveness of the decompression is visually confirmed by observing changes in the epidurogram and the flow of contrast material injected during the procedure.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any immediate complications and assessing the effectiveness of the decompression. Patients may experience some discomfort at the site of the procedure, which can be managed with appropriate pain relief measures. Follow-up imaging may be required to evaluate the success of the decompression and to ensure that there are no residual issues. The recovery process is generally quicker compared to traditional open surgery, allowing patients to resume normal activities sooner, although specific recovery protocols should be followed as directed by the healthcare provider.

Short Descr PERQ LAMOT/LAM LUMBAR
Medium Descr PERC LAMINO-/LAMINECTOMY INDIR IMAG GUIDE LUMBAR
Long Descr Percutaneous laminotomy/laminectomy (interlaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy), any method, under indirect image guidance (eg, fluoroscopic, CT), single or multiple levels, unilateral or bilateral; lumbar
Status Code Restricted Coverage
Global Days YYY - Carrier Determines Whether Global Concept Applies
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 0 - No 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) 0 - 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 Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 3 - Laminectomy, excision intervertebral disc
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
SG Ambulatory surgical center (asc) facility service
GC This service has been performed in part by a resident under the direction of a teaching physician
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
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
CR Catastrophe/disaster related
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.
73 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure prior to the administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may cancel a surgical or diagnostic procedure subsequent to the patient's surgical preparation (including sedation when provided, and being taken to the room where the procedure is to be performed), but prior to the administration of anesthesia (local, regional block(s) or general). under these circumstances, the intended service that is prepared for but cancelled can be reported by its usual procedure number and the addition of modifier 73. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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.
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).
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)
CG Policy criteria applied
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
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)
X2 Continuous/focused services: for reporting services by clinicians whose expertise is needed for the ongoing management of a chronic disease or a condition that needs to be managed and followed with no planned endpoint to the relationship; reporting clinician service examples include but are not limited to: a rheumatologist taking care of the patient's rheumatoid arthritis longitudinally but not providing general primary care services
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
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
2017-01-01 Changed Long description changed.
2012-01-01 Added First appearance in code book
2011-07-01 Added Code implemented
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