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Official Description

Twist drill, burr hole, craniotomy, or craniectomy with stereotactic implantation of neurostimulator electrode array in subcortical site (eg, thalamus, globus pallidus, subthalamic nucleus, periventricular, periaqueductal gray), with use of intraoperative microelectrode recording; first array

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 61867 involves the implantation of a neurostimulator electrode array in the subcortical regions of the brain, which are critical areas for managing various functional disorders. This procedure is particularly relevant for patients suffering from conditions such as Parkinson's disease, tremors, multiple sclerosis, and medically intractable primary dystonias, as well as symptoms resulting from psychotropic medications, including bradykinesia, dyskinesia, rigidity, and severe pain associated with cancer or other causes. The use of a stereotactic frame is essential in this procedure, as it provides a precise method for targeting specific brain areas. Imaging techniques such as MRI or CT scans are utilized to accurately map the brain and determine the optimal locations for electrode array placement. The procedure involves creating access points through twist drill holes or burr holes, or alternatively, performing a craniotomy or craniectomy to expose the brain. This meticulous approach allows for the careful insertion of a guide cannula into the brain, where microelectrode recordings are taken to assess neuronal responses. The ultimate goal is to position the neurostimulator array accurately within the targeted subcortical sites to achieve the desired therapeutic effects.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 61867 is indicated for the treatment of various functional disorders, particularly in patients experiencing:

  • Parkinson's Disease - A progressive neurological disorder characterized by tremors, rigidity, and bradykinesia.
  • Tremors - Involuntary, rhythmic muscle contractions leading to shaking movements in different parts of the body.
  • Multiple Sclerosis - A disease that affects the central nervous system, leading to a range of neurological symptoms.
  • Medically Intractable Primary Dystonias - Movement disorders that cause sustained muscle contractions and abnormal postures, resistant to standard treatments.
  • Symptoms Due to Psychotropic Medications - Side effects from medications used to treat psychiatric disorders that may lead to movement disorders.
  • Bradykinesia - Slowness of movement, often seen in Parkinson's disease.
  • Dyskinesia - Abnormal, uncontrolled, and involuntary movements.
  • Rigidity - Stiffness and inflexibility of the muscles.
  • Severe Pain from Cancer or Other Causes - Chronic pain conditions that may benefit from neuromodulation.

2. Procedure

The procedure begins with the attachment of a stereotactic frame to the patient's skull, which is crucial for ensuring precise targeting of the brain regions. Imaging studies, such as MRI or CT scans, are then performed to map the brain and identify the specific locations for electrode array placement. The number of electrode arrays to be implanted and their trajectories are determined during this phase. Once the planning is complete, the entry points for the twist drill holes or burr holes are localized and marked on the skin. An incision is made at these points, and the twist holes or burr holes are created to access the underlying brain tissue.

  • Step 1: The dura mater, the protective covering of the brain, is coagulated and punctured to allow access to the brain.
  • Step 2: If a craniotomy or craniectomy is performed, scalp flaps are developed, burr holes are drilled, and the bone between these holes is cut using a saw or craniotome. A bone flap is then elevated or a portion of the skull is removed to expose the dura.
  • Step 3: The dura is opened, revealing the surface of the brain. The entry site for the guide cannula is inspected to ensure that there are no large blood vessels in the area.
  • Step 4: The surface of the brain is coagulated to minimize bleeding, and the guide cannula is inserted into the brain tissue.
  • Step 5: A microdrive/electrode assembly is attached to the stereotactic frame, and a microelectrode is inserted into the guide cannula. As the microelectrode is advanced into the brain, recordings from individual neurons are obtained, and their responses to various stimuli are evaluated.
  • Step 6: Multiple microelectrode tracks may be necessary to identify the optimal target region for the electrode array placement.
  • Step 7: Once the optimal placement is determined, the microelectrode is removed, and the deep brain stimulation array is introduced and positioned in the target area.
  • Step 8: Test stimulation is performed, and adjustments are made to the position of the array until the desired functional results are achieved.
  • Step 9: The guide cannula is removed, leaving the electrode array in place, and an anchoring device is used to maintain the array's position.
  • Step 10: The lead is coiled in a subgaleal pocket, and if more than one array is implanted, the procedure is repeated.
  • Step 11: Finally, the galea is closed with sutures, followed by closure of the skin, and the stereotactic frame is removed.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any immediate complications and ensuring proper healing of the surgical site. Patients may experience some discomfort or swelling at the incision sites, which should be managed appropriately. Follow-up appointments are necessary to assess the functionality of the implanted neurostimulator array and to make any required adjustments to optimize therapeutic outcomes. Patients will also be educated on signs of infection or other complications that may arise after the procedure, ensuring they understand when to seek further medical attention.

Short Descr IMPLANT NEUROELECTRODE
Medium Descr STRTCTC IMPLTJ NSTIM ELTRD W/RECORD 1ST ARRAY
Long Descr Twist drill, burr hole, craniotomy, or craniectomy with stereotactic implantation of neurostimulator electrode array in subcortical site (eg, thalamus, globus pallidus, subthalamic nucleus, periventricular, periaqueductal gray), with use of intraoperative microelectrode recording; first array
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 Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 9 - Other OR therapeutic nervous system procedures

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

61868 Addon Code MPFS Status: Active Code APC C Twist drill, burr hole, craniotomy, or craniectomy with stereotactic implantation of neurostimulator electrode array in subcortical site (eg, thalamus, globus pallidus, subthalamic nucleus, periventricular, periaqueductal gray), with use of intraoperative microelectrode recording; each additional array (List separately in addition to primary procedure)
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)
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.
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
RT Right side (used to identify procedures performed on the right side of the body)
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).
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).
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).
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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
GZ Item or service expected to be denied as not reasonable and necessary
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Date
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2004-01-01 Added First appearance in code book in 2004.
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