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Official Description

Magnetic resonance (eg, proton) imaging, spinal canal and contents, lumbar; without contrast material

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Magnetic resonance imaging (MRI) is a sophisticated imaging technique utilized to visualize the lumbar spinal canal and its contents. This noninvasive procedure employs the magnetic properties of hydrogen nuclei found in the body, allowing for detailed imaging without the use of ionizing radiation. During the MRI process, a powerful magnetic field is generated, which causes the hydrogen atoms in the body to align with the magnetic field. Subsequently, radiowaves are transmitted into this magnetic field, prompting the protons within the hydrogen nuclei to emit specific radiofrequency signals. These signals are captured by a computer, which processes the data to produce high-resolution tomographic images in three-dimensional slices. The patient undergoing this procedure is positioned on a motorized table that moves into a large MRI scanner, often referred to as a tunnel. MRI scans of the lumbar spine are typically indicated when conservative treatments for back pain have failed, prompting the need for further investigation or consideration of more invasive treatment options. The absence of contrast material in CPT® Code 72148 distinguishes it from CPT® Code 72149, where a contrast dye is utilized to enhance the visibility of the spinal structures. The resulting images are critically analyzed by the physician to identify potential abnormalities that may relate to the patient's symptoms, including misalignment of the spine, vertebral body diseases or injuries, intervertebral disc issues such as herniation or degeneration, the adequacy of the spinal canal for the spinal cord and nerve roots, and any signs of nerve compression or inflammation, as well as changes that may have occurred post-surgery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Magnetic resonance imaging (MRI) of the lumbar spinal canal and contents is performed for various clinical indications, particularly when conservative treatment options for back pain have proven ineffective. The following conditions may warrant the use of this imaging technique:

  • Back Pain - Persistent or severe back pain that does not respond to conservative management may necessitate further evaluation through MRI.
  • Abnormal Spinal Alignment - MRI can help identify misalignments in the spine that may contribute to pain or neurological symptoms.
  • Vertebral Body Disease or Injury - Conditions affecting the vertebrae, such as fractures or infections, can be assessed using MRI.
  • Intervertebral Disc Issues - MRI is useful for diagnosing herniated, degenerated, or dehydrated intervertebral discs that may be causing pain or nerve compression.
  • Spinal Canal Size Assessment - The imaging can evaluate whether the spinal canal is adequately sized to accommodate the spinal cord and nerve roots.
  • Nerve Compression or Inflammation - MRI can reveal pinched or inflamed nerves that may be contributing to symptoms.
  • Post-Surgical Changes - Following spinal surgery, MRI can be used to monitor for any changes or complications that may arise.

2. Procedure

The procedure for conducting an MRI of the lumbar spinal canal and contents involves several key steps to ensure accurate imaging and patient safety. The following outlines the procedural steps:

  • Patient Preparation - The patient is first informed about the procedure, including what to expect during the MRI. They may be asked to remove any metal objects, such as jewelry or clothing with metal fasteners, to prevent interference with the magnetic field.
  • Positioning - The patient is then positioned on a motorized table, typically lying on their back. Proper alignment is crucial to obtain clear images of the lumbar region.
  • Entering the MRI Scanner - Once positioned, the table moves into the MRI scanner, which is a large, cylindrical machine that houses the magnet. The patient may be asked to remain still during the imaging process to avoid motion artifacts.
  • Image Acquisition - The MRI machine generates a strong magnetic field and sends radiowaves into the body. The protons in the lumbar region respond to these signals, and the emitted radiofrequency signals are captured by the machine. The computer processes these signals to create detailed images of the spinal canal and surrounding structures.
  • Completion of the Scan - After the imaging is complete, the table retracts from the scanner, and the patient is assisted in getting up. The entire process typically takes between 30 to 60 minutes, depending on the specific protocol used.

3. Post-Procedure

After the MRI procedure, patients are generally able to resume their normal activities immediately, as there are no invasive elements involved. However, they may be advised to wait for the radiologist's report before making any decisions regarding further treatment based on the MRI findings. The physician will review the images and discuss the results with the patient, which may include recommendations for additional diagnostic tests or treatment options based on the identified conditions. It is important for patients to follow any specific post-procedure instructions provided by the healthcare team to ensure optimal outcomes.

Short Descr MRI LUMBAR SPINE W/O DYE
Medium Descr MRI SPINAL CANAL LUMBAR W/O CONTRAST MATERIAL
Long Descr Magnetic resonance (eg, proton) imaging, spinal canal and contents, lumbar; without contrast material
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 4 - Special payment adjustment rules on the technical component (TC) of multiple diagnostic imaging 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) 0 - Payment restriction for assistants at surgery applies 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 88 -
APC Status Indicator Codes That May Be Paid Through a Composite APC
ASC Payment Indicator Radiology service paid separately when provided integral to a surgical procedure on ASC list; payment based on MPFS nonfacility PE RVUs.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I2D - Advanced imaging - MRI/MRA: other
MUE 1
CCS Clinical Classification 198 - Magnetic resonance imaging

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

0649T Add-on Code MPFS Status: Carrier Priced APC S Quantitative magnetic resonance for analysis of tissue composition (eg, fat, iron, water content), including multiparametric data acquisition, data preparation and transmission, interpretation and report, obtained with diagnostic MRI examination of the same anatomy (eg, organ, gland, tissue, target structure); single organ (List separately in addition to code for primary procedure)
0698T Add-on Code Resequenced Code MPFS Status: Carrier Priced APC S ASC Z2 Quantitative magnetic resonance for analysis of tissue composition (eg, fat, iron, water content), including multiparametric data acquisition, data preparation and transmission, interpretation and report, obtained with diagnostic MRI examination of the same anatomy (eg, organ, gland, tissue, target structure); multiple organs (List separately in addition to code for primary procedure)
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
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
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
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).
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
MH Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider
GC This service has been performed in part by a resident under the direction of a teaching physician
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
GA Waiver of liability statement issued as required by payer policy, individual case
MF The order for this service does not adhere to the appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
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
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
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.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
MC Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of electronic health record or clinical decision support mechanism vendor issues
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.
MA Ordering professional is not required to consult a clinical decision support mechanism due to service being rendered to a patient with a suspected or confirmed emergency medical condition
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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).
CR Catastrophe/disaster related
GZ Item or service expected to be denied as not reasonable and necessary
Q5 Service furnished under a reciprocal billing 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
KX Requirements specified in the medical policy have been met
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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.
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.)
95 Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system: synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
99 Multiple modifiers: under certain circumstances 2 or more modifiers may be necessary to completely delineate a service. in such situations modifier 99 should be added to the basic procedure, and other applicable modifiers may be listed as part of the description of the service.
AM Physician, team member service
AU Item furnished in conjunction with a urological, ostomy, or tracheostomy supply
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
E2 Lower left, eyelid
ET Emergency services
FY X-ray taken using computed radiography technology/cassette-based imaging
GQ Via asynchronous telecommunications system
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
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
H9 Court-ordered
LT Left side (used to identify procedures performed on the left side of the body)
MB Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
MD Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of extreme and uncontrollable circumstances
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
PO Excepted service provided at an off-campus, outpatient, provider-based department of a hospital
QJ Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b)
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
TT Individualized service provided to more than one patient in same setting
U2 Medicaid level of care 2, as defined by each state
U6 Medicaid level of care 6, as defined by each state
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
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
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Notes
1990-01-01 Added First appearance in code book in 1990.
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