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Official Description

Arthrodesis, anterior interbody technique, including minimal discectomy to prepare interspace (other than for decompression); each additional interspace (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Arthrodesis, specifically using the anterior interbody technique, is a surgical procedure aimed at achieving spinal fusion by immobilizing a joint. This technique is particularly relevant for patients suffering from conditions such as herniated discs, lesions, or instability due to fractures and dislocations of the spine. The procedure involves accessing the spine from the front (ventral) side of the body, which allows for a direct approach to the affected vertebrae while minimizing damage to surrounding structures such as the esophagus, trachea, and thyroid. During the surgery, traction is applied to the patient's head to facilitate access and maintain alignment of the vertebrae. The process begins with a careful incision in the neck area, followed by the use of specialized instruments to hold the intervertebral muscles apart, providing a clear view of the vertebrae. A drill is then inserted into the affected vertebrae, with its positioning confirmed through X-ray imaging to ensure accuracy. The surgeon creates a groove or channel in the front of the vertebrae, which is essential for the subsequent steps of the procedure. Once the groove is established, the area between the two adjacent vertebrae is meticulously cleaned out using spring-loaded forceps equipped with a sharp blade. This step is crucial for removing any cartilage and preparing the site for the bone graft. The bone graft, which may be harvested from a donor or the patient's own hip area, is then packed into the cleaned-out space, trimmed to fit, and secured in place. As the procedure concludes, the traction on the head is gradually reduced to ensure that the bone graft remains stable. The fibrous membranes covering the deep vertebral area are sutured, a drain may be placed to prevent fluid accumulation, and the incision is closed with sutures. It is important to note that CPT® Code 22585 is specifically designated for each additional interspace involved in the procedure and can be billed in conjunction with other related codes such as 22554, 22556, or 22558.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The anterior interbody technique for arthrodesis is indicated for various spinal conditions that necessitate stabilization and fusion of the vertebrae. The following are the explicitly provided indications for this procedure:

  • Herniated Discs - This condition occurs when the soft material inside a spinal disc bulges out, potentially pressing on nearby nerves and causing pain or neurological symptoms.
  • Lesions - Abnormal tissue growths or damage in the spinal area that may require stabilization to prevent further complications.
  • Stabilization of Fractures - Fractures in the vertebrae that compromise spinal stability and require surgical intervention to restore structural integrity.
  • Dislocations of the Spine - Displacement of vertebrae that can lead to instability and necessitate surgical correction to ensure proper alignment and function.

2. Procedure

The procedure for anterior interbody arthrodesis involves several critical steps that ensure effective spinal fusion. Each step is designed to prepare the interspace for the bone graft and facilitate the fusion process:

  • Step 1: Incision and Access - The procedure begins with a careful incision made in the neck area to access the spine. Surgeons take great care to avoid damaging vital structures such as the esophagus, trachea, and thyroid during this initial step.
  • Step 2: Muscle Separation - Specialized instruments are employed to hold the intervertebral muscles apart, providing a clear view and access to the affected vertebrae. This step is crucial for ensuring that the surgical field is unobstructed.
  • Step 3: Drilling - A drill is inserted into the afflicted vertebrae, and its positioning is confirmed via X-ray imaging. This confirmation is essential to ensure that the drill is accurately placed for the subsequent steps.
  • Step 4: Creating the Groove - The drill or saw is then used to create a groove or channel in the front of the vertebrae. This channel is necessary for the placement of the bone graft.
  • Step 5: Cleaning the Interspace - The area between the two adjacent vertebrae is meticulously cleaned out using spring-loaded forceps equipped with a sharp blade. This cleaning process removes any cartilage and prepares the site for the bone graft.
  • Step 6: Bone Graft Preparation - The surgeon obtains bone graft material, which may be harvested from a donor or the patient's own hip area. The graft is then packed into the cleaned-out space and trimmed to fit appropriately.
  • Step 7: Stabilization of the Graft - As the procedure nears completion, traction applied to the head is gradually lessened to ensure that the bone graft remains in place during the healing process.
  • Step 8: Closure - The fibrous membranes covering the deep vertebral area are sutured, and a drain may be placed to prevent fluid accumulation. Finally, the incision is closed with sutures, completing the procedure.

3. Post-Procedure

Post-procedure care following anterior interbody arthrodesis is essential for ensuring proper recovery and successful fusion of the vertebrae. Patients are typically monitored for any signs of complications, such as infection or excessive bleeding. Pain management is an important aspect of post-operative care, and patients may be prescribed analgesics to manage discomfort. Physical therapy may be recommended to aid in recovery, focusing on gentle movements and exercises to strengthen the surrounding muscles and improve mobility. Patients are advised to follow specific activity restrictions to avoid putting undue stress on the surgical site during the initial healing phase. Regular follow-up appointments are necessary to assess the healing process and ensure that the fusion is progressing as expected. Overall, adherence to post-procedure instructions is crucial for achieving optimal outcomes following this surgical intervention.

Short Descr ARTHRD ANT NTRBD MIN DSC EA
Medium Descr ARTHRD ANT NTRBD MIN DSC EA ADDL INTERSPACE
Long Descr Arthrodesis, anterior interbody technique, including minimal discectomy to prepare interspace (other than for decompression); each additional interspace (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) 2 - Co-surgeons permitted and no documentation required if the two- specialty requirement is met.
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 5
CCS Clinical Classification 158 - Spinal fusion

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

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
20705 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), intra-articular (List separately in addition to code for primary procedure)
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.
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
GC This service has been performed in part by a resident under the direction of a teaching physician
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.
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).
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.
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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).
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.
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.)
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
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
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)
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)
SA Nurse practitioner rendering service in collaboration with a physician
SG Ambulatory surgical center (asc) facility service
T1 Left foot, second digit
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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
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2022-01-01 Note Short and Medium description changed.
2013-01-01 Note Guideline information changed.
2011-01-01 Note Guideline information changed.
2007-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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