© Copyright 2025 American Medical Association. All rights reserved.
Paravertebral facet joints, also known as zygapophyseal joints, are critical structures located at the posterior aspect of the spine, situated on either side of each vertebra where one vertebra overlaps another. These joints play a significant role in spinal movement and stability. Pain originating from these joints can be attributed to various conditions, including post-laminectomy syndrome, which may arise after spinal surgery due to destabilization of the spinal joints, formation of scar tissue, or recurrence of disc herniation. Other potential causes of facet joint pain include degenerative conditions such as spondylosis, spondylolisthesis, and arthritis. The procedure associated with CPT® Code 64491 involves the injection of a diagnostic or therapeutic agent into the paravertebral facet joint or the nerves that innervate that joint, utilizing image guidance techniques such as fluoroscopy or computed tomography (CT). This process begins with the preparation of the skin over the facet joint, followed by the administration of a local anesthetic to minimize discomfort. A spinal needle is then carefully directed into the facet joint space until it encounters bone or cartilage, ensuring accurate placement. To confirm the correct positioning of the needle, a small amount of contrast material is injected. Subsequently, a local anesthetic and/or steroid is administered to provide pain relief or to assist in diagnosing the source of pain. The initial injection, known as a diagnostic facet joint injection, utilizes a local anesthetic to pinpoint the specific area responsible for the patient's pain. If the patient experiences significant pain relief following this diagnostic injection, a therapeutic injection may be performed on a subsequent date, which typically involves a long-acting local anesthetic combined with a steroid. It is important to note that CPT® Code 64490 is used for a single cervical or thoracic facet joint injection, while CPT® Code 64491 is designated for the second level, and CPT® Code 64492 is applicable for the third and any additional cervical or thoracic levels injected.
© Copyright 2025 Coding Ahead. All rights reserved.
The procedure associated with CPT® Code 64491 is indicated for the following conditions:
The procedure for CPT® Code 64491 involves several critical steps to ensure accurate delivery of the diagnostic or therapeutic agent into the paravertebral facet joint. The first step is the preparation of the skin over the targeted facet joint, which includes cleaning the area to reduce the risk of infection. Following this, a local anesthetic is injected to numb the skin and surrounding tissues, minimizing discomfort for the patient during the procedure. Once the area is adequately anesthetized, a spinal needle is carefully inserted and directed into the facet joint space. The physician advances the needle until it encounters bone or cartilage, which indicates that the needle is in the correct position. To confirm the placement of the needle, a small amount of contrast material is injected into the joint space. This step is crucial as it verifies that the needle is accurately positioned within the facet joint. After confirming the correct placement, the physician proceeds with the injection of a local anesthetic and/or steroid into the joint. The local anesthetic serves to provide immediate pain relief, while the steroid is intended to reduce inflammation and provide longer-lasting relief. If the initial injection is performed as a diagnostic facet joint injection, the response to the local anesthetic will help determine the source of the patient's pain. Should the patient experience significant pain relief, a subsequent therapeutic injection may be scheduled, which typically involves a long-acting local anesthetic combined with a steroid for extended relief.
After the procedure associated with CPT® Code 64491, patients are typically monitored for a short period to assess their response to the injection and to ensure there are no immediate complications. It is common for patients to experience some soreness at the injection site, which may resolve within a few days. Patients are usually advised to avoid strenuous activities or heavy lifting for a short period following the injection to allow for optimal healing. The physician may provide specific post-procedure instructions, including recommendations for pain management and follow-up appointments to evaluate the effectiveness of the injection. If the initial diagnostic injection provides significant pain relief, a therapeutic injection may be scheduled for a later date to enhance pain management and improve the patient's quality of life.
| Short Descr | INJ PARAVERT F JNT C/T 2 LEV | Medium Descr | NJX DX/THER AGT PVRT FACET JT CRV/THRC 2ND LEVEL | Long Descr | Injection(s), diagnostic or therapeutic agent, paravertebral facet (zygapophyseal) joint (or nerves innervating that joint) with image guidance (fluoroscopy or CT), cervical or thoracic; second level (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) | 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) | 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 | 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) | P6B - Minor procedures - musculoskeletal | MUE | 1 | CCS Clinical Classification | 8 - Other non-OR or closed therapeutic nervous system procedures |
This is an add-on code that must be used in conjunction with one of these primary codes.
| 64490 | MPFS Status: Active Code APC T ASC G2 CPT Assistant Article Illustration for Code Injection(s), diagnostic or therapeutic agent, paravertebral facet (zygapophyseal) joint (or nerves innervating that joint) with image guidance (fluoroscopy or CT), cervical or thoracic; single level | 64492 | Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Illustration for Code Injection(s), diagnostic or therapeutic agent, paravertebral facet (zygapophyseal) joint (or nerves innervating that joint) with image guidance (fluoroscopy or CT), cervical or thoracic; third and any additional level(s) (List separately in addition to code for primary procedure) |
| 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). | LT | Left side (used to identify procedures performed on the left side of the body) | RT | Right side (used to identify procedures performed on the right side of the body) | KX | Requirements specified in the medical policy have been met | 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. | SG | Ambulatory surgical center (asc) facility 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). | GA | Waiver of liability statement issued as required by payer policy, individual case | 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 | 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 | GC | This service has been performed in part by a resident under the direction of a teaching physician | 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 | AQ | Physician providing a service in an unlisted health professional shortage area (hpsa) | AG | Primary physician | 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 | 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. | 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. | 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). | 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). | 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 | 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 | GX | Notice of liability issued, voluntary under payer policy | GZ | Item or service expected to be denied as not reasonable and necessary | KS | Glucose monitor supply for diabetic beneficiary not treated with insulin | KT | Beneficiary resides in a competitive bidding area and travels outside that competitive bidding area and receives a competitive bid item | KY | Dmepos item subject to dmepos competitive bidding program number 5 | LL | Lease/rental (use the 'll' modifier when dme equipment rental is to be applied against the purchase price) | LR | Laboratory round trip | PN | Non-excepted service provided at an off-campus, outpatient, provider-based department of a hospital | 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 | T5 | Right foot, great toe | T6 | Right foot, second digit | TR | School-based individualized education program (iep) services provided outside the public school district responsible for the student | 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 | XE | Separate encounter, a service that is distinct because it occurred during a separate encounter | XP | Separate practitioner, a service that is distinct because it was performed by a different practitioner |
|
Date
|
Action
|
Notes
|
|---|---|---|
| 2010-01-01 | Added | - |
Get instant expert-level medical coding assistance.