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Official Description

Craniectomy, trephination, bone flap craniotomy; for excision of brain tumor, supratentorial, except meningioma

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 61510 involves a craniectomy, trephination, and bone flap craniotomy specifically for the excision of a brain tumor located in the supratentorial region, which is the area of the brain situated above the tentorium cerebelli. This anatomical structure is a fold of the dura mater that separates the cerebrum from the cerebellum, encompassing critical areas such as the frontal and occipital lobes. A craniectomy is a surgical procedure that entails the creation of scalp flaps, followed by the drilling of burr holes in the skull. The bone between these burr holes is then meticulously cut using a surgical saw or craniotome, allowing for the elevation and removal of a bone flap, which may be done temporarily or permanently. Trephination is a technique that involves the removal of a circular section of the skull, while craniotomy refers to the broader process of creating both scalp and bone flaps to gain access to the brain. In the context of CPT® Code 61510, the focus is on the excision of a brain tumor or lesion, excluding meningiomas. The procedure necessitates an incision of the dura mater, leading to the creation of a dural flap. An operative microscope is employed to enhance visualization and to safeguard critical structures such as cortical blood vessels during the dissection of the tumor from the surrounding brain tissue. The objective is to achieve complete resection of the tumor; however, if vital structures are involved, the surgeon will excise as much of the tumor as is safely possible. Following the excision, the dura is repaired, and the bone flaps are repositioned and secured with steel sutures. In some cases, the defect in the skull may be filled with bone wax or silicone. Finally, the scalp flap is reapproximated, and the skin incision is closed, ensuring a thorough and careful approach to this complex surgical intervention.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 61510 is indicated for the excision of brain tumors located in the supratentorial region, excluding meningiomas. The specific indications for this procedure may include:

  • Brain Tumor The presence of a brain tumor in the supratentorial area that requires surgical intervention for removal.
  • Lesion Excision The need to excise a lesion that is affecting brain function or causing symptoms due to its location.
  • Symptomatic Conditions Symptoms such as seizures, headaches, or neurological deficits that may be attributed to the presence of a tumor in the supratentorial region.

2. Procedure

The procedure for CPT® Code 61510 involves several critical steps to ensure the safe and effective excision of the brain tumor. The steps are as follows:

  • Step 1: Scalp Flap Creation The procedure begins with the creation of scalp flaps, which involves making incisions in the scalp to allow for the elevation of the skin and access to the underlying skull.
  • Step 2: Burr Hole Drilling Burr holes are drilled into the skull at predetermined locations to facilitate the subsequent steps of the procedure.
  • Step 3: Bone Flap Elevation The bone between the burr holes is carefully cut using a surgical saw or craniotome. A bone flap is then elevated and removed, which may be done temporarily or permanently, depending on the surgical plan.
  • Step 4: Dura Incision and Flap Creation The dura mater, the protective covering of the brain, is incised, and a dural flap is created to provide access to the brain tissue beneath.
  • Step 5: Tumor Dissection An operative microscope is utilized to visualize the surgical field, allowing the surgeon to identify and preserve critical structures such as cortical blood vessels. The brain tumor is located and carefully dissected from the surrounding brain tissue.
  • Step 6: Tumor Resection The surgeon aims to resect the tumor in its entirety. If critical structures are involved, the surgeon will excise as much of the tumor as can be safely removed without compromising surrounding brain function.
  • Step 7: Dura Repair After the tumor has been excised, the dura is repaired to restore the protective barrier around the brain.
  • Step 8: Bone Flap Repositioning The previously elevated bone flap is placed back over the dura and secured using steel sutures. In some cases, the skull defect may be filled with bone wax or silicone to ensure stability.
  • Step 9: Scalp Closure Finally, the scalp flap is reapproximated, and the skin incision is closed, completing the surgical procedure.

3. Post-Procedure

Post-procedure care following a craniectomy for tumor excision involves monitoring the patient for any complications, such as infection or neurological deficits. Patients may require pain management and close observation in a recovery setting. The surgical site should be kept clean and dry, and any dressings should be changed as per the physician's instructions. Follow-up appointments are essential to assess recovery and to monitor for any recurrence of symptoms or complications related to the surgery. Rehabilitation services may also be recommended to support recovery, depending on the extent of the surgery and the patient's overall condition.

Short Descr CRNEC TREPH EXC BRN TUM STTL
Medium Descr CRNEC TREPH BONE FLAP CRNOT EXC BRAIN TUMOR STTL
Long Descr Craniectomy, trephination, bone flap craniotomy; for excision of brain tumor, supratentorial, except meningioma
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) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 1 - Incision and excision of CNS

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

0735T Add On Code MPFS Status: Carrier Priced APC N Preparation of tumor cavity, with placement of a radiation therapy applicator for intraoperative radiation therapy (IORT) concurrent with primary craniotomy (List separately in addition to code for primary procedure)
61517 Addon Code MPFS Status: Active Code APC C Implantation of brain intracavitary chemotherapy agent (List separately in addition to code for primary procedure)
69990 Addon Code MPFS Status: Restricted APC N ASC N1 PUB 100 CPT Assistant Article 1Microsurgical techniques, requiring use of operating microscope (List separately in addition to code for primary procedure)
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
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.
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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).
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.
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.
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).
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.)
47 Anesthesia by surgeon: regional or general anesthesia provided by the surgeon may be reported by adding modifier 47 to the basic service. (this does not include local anesthesia.) note: modifier 47 would not be used as a modifier for the anesthesia procedures.
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.
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.
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.
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.)
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
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
ET Emergency services
GJ "opt out" physician or practitioner emergency or urgent service
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
LT Left side (used to identify procedures performed on the left side of the body)
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
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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2025-01-01 Changed Short and Medium Descriptions changed.
Pre-1990 Added Code added.
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