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Official Description

Computed tomography, head or brain; with contrast material(s)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Computed tomography (CT), commonly known as a CT scan, is a diagnostic imaging procedure that utilizes advanced X-ray technology and computer processing to create detailed cross-sectional images of the head or brain. This procedure involves the use of specialized X-ray equipment that captures multiple images from various angles as the patient is positioned on a CT examination table. Initially, a preliminary scan is conducted to establish the starting position for the imaging process. During the actual CT scan, the examination table moves slowly through the scanner, while numerous X-ray beams and electronic detectors rotate around the area being examined. The system measures the amount of radiation absorbed by the tissues, which is crucial for generating accurate images. The data collected is then processed by a computer program, resulting in two-dimensional images that provide a comprehensive view of the internal structures of the head or brain. These images are displayed on a monitor for the physician's review. The physician may analyze the images in real-time and can request additional scans if specific areas require further investigation. It is important to note that CPT® Code 70460 is specifically used when intravenous contrast material is administered prior to the CT scan, enhancing the visibility of certain structures and abnormalities. In contrast, CPT® Code 70450 is designated for CT scans performed without contrast, while CPT® Code 70470 is applicable when a CT scan is initially conducted without contrast, followed by the administration of contrast for further imaging. The physician's interpretation of the CT findings is documented in a written report, which is essential for guiding further medical decisions.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Computed tomography of the head or brain with contrast material is indicated for a variety of clinical scenarios where detailed imaging is necessary to assess the condition of the brain or surrounding structures. The following are specific indications for performing this procedure:

  • Evaluation of Head Trauma This procedure is often performed to assess for any intracranial hemorrhage, skull fractures, or other traumatic injuries following an accident or fall.
  • Detection of Tumors CT scans with contrast are utilized to identify and characterize brain tumors, providing critical information regarding their size, location, and potential impact on surrounding tissues.
  • Assessment of Stroke In cases of suspected stroke, a CT scan with contrast can help determine the presence of ischemic or hemorrhagic stroke, guiding immediate treatment decisions.
  • Investigation of Headaches Persistent or severe headaches may warrant a CT scan to rule out serious underlying conditions such as tumors, vascular malformations, or other abnormalities.
  • Evaluation of Infections Conditions such as abscesses or meningitis can be assessed using CT imaging to visualize the extent of infection and any associated complications.

2. Procedure

The procedure for performing a CT scan of the head or brain with contrast material involves several key steps that ensure accurate imaging and patient safety. The following outlines the procedural steps:

  • Patient Preparation Prior to the CT scan, the patient is informed about the procedure and any necessary preparations, such as fasting or discontinuing certain medications. The healthcare provider will also assess the patient's medical history to identify any potential allergies, particularly to contrast material.
  • Positioning the Patient The patient is positioned comfortably on the CT examination table, typically lying flat on their back. Proper alignment is crucial to ensure that the area of interest is accurately captured during the scan.
  • Initial Scanning An initial scan is performed to determine the optimal starting position for the imaging. This preliminary pass helps the technician set the parameters for the subsequent scans.
  • Administration of Contrast Material Intravenous contrast material is administered to enhance the visibility of blood vessels and tissues in the brain. This step is critical for improving the diagnostic quality of the images.
  • CT Imaging As the table moves through the CT scanner, X-ray beams and electronic detectors rotate around the patient's head. The system captures multiple images from various angles, measuring the radiation absorption to create detailed cross-sectional images.
  • Image Processing The data collected during the scan is processed by a computer, which generates two-dimensional images of the brain. These images are displayed on a monitor for immediate review by the physician.
  • Review and Interpretation The physician examines the images in real-time and may request additional sections if necessary. After the scan, a comprehensive written interpretation of the findings is documented for further clinical decision-making.

3. Post-Procedure

After the CT scan with contrast material is completed, the patient is typically monitored for a short period to ensure there are no immediate adverse reactions to the contrast agent. It is common for patients to experience mild side effects, such as a warm sensation during the injection of the contrast material. Patients are advised to drink plenty of fluids post-procedure to help flush the contrast material from their system. Any specific post-procedure instructions, including follow-up appointments or additional imaging, will be provided by the healthcare provider based on the findings of the CT scan. The physician will also discuss the results with the patient, outlining any necessary next steps in their care plan.

Short Descr CT HEAD/BRAIN W/DYE
Medium Descr CT HEAD/BRAIN W/CONTRAST MATERIAL
Long Descr Computed tomography, head or brain; with contrast material(s)
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) I2A - Advanced imaging - CAT/CT/CTA: brain/head/neck
MUE 1
CCS Clinical Classification 177 - Computerized axial tomography (CT) scan head

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

0722T Add On Code MPFS Status: Carrier Priced APC S Quantitative computed tomography (CT) tissue characterization, including interpretation and report, obtained with concurrent CT examination of any structure contained in the concurrently acquired diagnostic imaging dataset (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.
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).
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
GC This service has been performed in part by a resident under the direction of a teaching physician
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
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
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.
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
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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
GA Waiver of liability statement issued as required by payer policy, individual case
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
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
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).
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.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CR Catastrophe/disaster related
CT Computed tomography services furnished using equipment that does not meet each of the attributes of the national electrical manufacturers association (nema) xr-29-2013 standard
ET Emergency services
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
KX Requirements specified in the medical policy have been met
MB Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
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
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
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
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)
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
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
Action
Notes
2003-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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