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Official Description

Autograft for spine surgery only (includes harvesting the graft); morselized (through separate skin or fascial incision) (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 20937 refers to the procedure of harvesting and utilizing an autograft specifically for spine surgery. An autograft is a type of graft that is derived from the patient's own body, ensuring compatibility and reducing the risk of rejection. In this case, the graft is morselized, meaning it is broken down into smaller pieces to facilitate its integration into the surgical site. The harvesting of the graft occurs through a separate incision, which is distinct from the primary surgical site on the spine. This procedure is essential for promoting bone healing and regeneration in spinal surgeries, as the autologous bone contains vital components such as osteoblasts, which are responsible for bone formation, and bone morphogenic proteins that aid in the growth of new bone tissue. The graft can be harvested from various locations, including the iliac crest, ribs, or other areas, depending on the specific needs of the surgical procedure. The use of a morselized graft allows for better packing into the bone defect, enhancing the chances of successful healing and recovery following spinal surgery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 20937 is indicated for various conditions related to spinal surgery where bone grafting is necessary to promote healing and structural integrity. The following are the explicitly provided indications for this procedure:

  • Spinal Fusion: This procedure is often performed in conjunction with spinal fusion surgeries to provide the necessary bone material for fusing vertebrae together.
  • Bone Defects: It is indicated for filling bone defects in the spine that may arise due to trauma, disease, or previous surgical interventions.
  • Degenerative Disc Disease: Patients suffering from degenerative disc disease may require this procedure to support the spine and facilitate healing.

2. Procedure

The procedure for CPT® Code 20937 involves several critical steps to ensure the successful harvesting and application of the morselized autograft. The following steps outline the process:

  • Step 1: Patient Preparation The patient is positioned appropriately for the surgical procedure, and anesthesia is administered to ensure comfort and pain management during the operation.
  • Step 2: Incision for Graft Harvesting A separate incision is made over the iliac crest, which is the area of the pelvis where the bone graft will be harvested. The incision is carefully made to minimize damage to surrounding tissues.
  • Step 3: Bone Exposure The muscle overlying the iliac crest is stripped away to expose the bone surface. This step is crucial for accessing the bone that will be harvested.
  • Step 4: Graft Harvesting The top portion of the iliac crest is excised, and the soft cancellous spongy bone is scooped out. This bone is then crushed or morcellized into smaller pieces to facilitate packing into the spinal defect.
  • Step 5: Graft Application The morselized bone graft is packed into the prepared bone defect in the spine. It is compressed to ensure proper contact with the surrounding bone, which is essential for effective healing.

3. Post-Procedure

After the completion of the procedure associated with CPT® Code 20937, the patient will require careful monitoring and post-operative care. Expected recovery includes managing pain and preventing infection at the incision sites. The patient may be advised to limit physical activity to allow for proper healing of both the graft site and the surgical site on the spine. Follow-up appointments will be necessary to assess the integration of the graft and the overall recovery process. Rehabilitation may be recommended to restore mobility and strength in the affected area.

Short Descr SP BONE AGRFT MORSEL ADD-ON
Medium Descr AUTOGRAFT SPINE SURGERY MORSELIZED SEP INCISION
Long Descr Autograft for spine surgery only (includes harvesting the graft); morselized (through separate skin or fascial incision) (List separately in addition to code for primary procedure)
Status Code Active Code
Global Days ZZZ - Code Related to Another Service
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) 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 Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 161 - Other OR therapeutic procedures on bone

This is an add-on code that must be used in conjunction with one of these primary codes.

22319 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Open treatment and/or reduction of odontoid fracture(s) and or dislocation(s) (including os odontoideum), anterior approach, including placement of internal fixation; with grafting
22532 MPFS Status: Active Code APC C Physician Quality Reporting Illustration for Code Arthrodesis, lateral extracavitary technique, including minimal discectomy to prepare interspace (other than for decompression); thoracic
22533 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, lateral extracavitary technique, including minimal discectomy to prepare interspace (other than for decompression); lumbar
22548 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, anterior transoral or extraoral technique, clivus-C1-C2 (atlas-axis), with or without excision of odontoid process
22551 MPFS Status: Active Code APC J1 ASC J8 Arthrodesis, anterior interbody, including disc space preparation, discectomy, osteophytectomy and decompression of spinal cord and/or nerve roots; cervical below C2
22552 Addon Code MPFS Status: Active Code APC N ASC N1 Arthrodesis, anterior interbody, including disc space preparation, discectomy, osteophytectomy and decompression of spinal cord and/or nerve roots; cervical below C2, each additional interspace (List separately in addition to code for primary procedure)
22554 MPFS Status: Active Code APC J1 ASC J8 Physician Quality Reporting CPT Assistant Article Arthrodesis, anterior interbody technique, including minimal discectomy to prepare interspace (other than for decompression); cervical below C2
22556 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Arthrodesis, anterior interbody technique, including minimal discectomy to prepare interspace (other than for decompression); thoracic
22558 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Arthrodesis, anterior interbody technique, including minimal discectomy to prepare interspace (other than for decompression); lumbar
22590 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, posterior technique, craniocervical (occiput-C2)
22595 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, posterior technique, atlas-axis (C1-C2)
22600 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, posterior or posterolateral technique, single interspace; cervical below C2 segment
22610 MPFS Status: Active Code APC C CPT Assistant Article Illustration for Code Arthrodesis, posterior or posterolateral technique, single interspace; thoracic (with lateral transverse technique, when performed)
22612 MPFS Status: Active Code APC J1 ASC J8 Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, posterior or posterolateral technique, single interspace; lumbar (with lateral transverse technique, when performed)
22630 MPFS Status: Active Code APC J1 Physician Quality Reporting CPT Assistant Article Illustration for Code Arthrodesis, posterior interbody technique, including laminectomy and/or discectomy to prepare interspace (other than for decompression), single interspace, lumbar;
22633 MPFS Status: Active Code APC J1 Arthrodesis, combined posterior or posterolateral technique with posterior interbody technique including laminectomy and/or discectomy sufficient to prepare interspace (other than for decompression), single interspace, lumbar;
22634 Addon Code MPFS Status: Active Code APC N Arthrodesis, combined posterior or posterolateral technique with posterior interbody technique including laminectomy and/or discectomy sufficient to prepare interspace (other than for decompression), single interspace, lumbar; each additional interspace (List separately in addition to code for primary procedure)
22800 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Arthrodesis, posterior, for spinal deformity, with or without cast; up to 6 vertebral segments
22802 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Arthrodesis, posterior, for spinal deformity, with or without cast; 7 to 12 vertebral segments
22804 MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Arthrodesis, posterior, for spinal deformity, with or without cast; 13 or more vertebral segments
22808 MPFS Status: Active Code APC C CPT Assistant Article Illustration for Code Arthrodesis, anterior, for spinal deformity, with or without cast; 2 to 3 vertebral segments
22810 MPFS Status: Active Code APC C CPT Assistant Article Illustration for Code Arthrodesis, anterior, for spinal deformity, with or without cast; 4 to 7 vertebral segments
22812 MPFS Status: Active Code APC C CPT Assistant Article Illustration for Code Arthrodesis, anterior, for spinal deformity, with or without cast; 8 or more vertebral segments
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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.
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.
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).
GC This service has been performed in part by a resident under the direction of a teaching physician
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.
RT Right side (used to identify procedures performed on the right side of the body)
LT Left side (used to identify procedures performed on the left side of the body)
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.
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.)
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
GW Service not related to the hospice patient's terminal condition
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
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
TV Special payment rates, holidays/weekends
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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Notes
2013-01-01 Changed Guideline information changed. Also, removed 0195T, 0196T per AMA 2013 corrections document.
2008-01-01 Changed Code description changed.
1996-01-01 Added Code added
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