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Official Description

Computed tomography, soft tissue neck; without contrast material

© 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 specific areas within the body. In the case of CPT® Code 70490, the focus is on the soft tissues of the neck, and the procedure is performed without the use of contrast material. During the CT scan, the patient is carefully positioned on a specialized examination table designed for the CT scanner. An initial scan is conducted to establish the starting point for the imaging process. Following this, the CT scan is executed as the table gradually moves through the scanner. This movement allows multiple X-ray beams to be emitted and detected by electronic sensors that rotate around the neck region being examined. The system measures the varying levels of radiation absorption by the tissues, which is crucial for generating accurate images. The data collected during the scan is processed by a computer program, resulting in two-dimensional images that represent the soft tissues of the neck. 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 further detail is needed in specific areas of interest. The final step involves the physician interpreting the findings from the CT scan and documenting any abnormalities observed in a written report.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 70490 is indicated for various clinical scenarios where detailed imaging of the soft tissues of the neck is necessary. The following conditions may warrant the use of this CT scan:

  • Neck Pain Patients presenting with unexplained neck pain may require imaging to identify potential underlying causes.
  • Swelling or Masses The presence of swelling or palpable masses in the neck region can be evaluated through this imaging technique to determine their nature.
  • Trauma Individuals who have experienced trauma to the neck may need a CT scan to assess for soft tissue injuries or other complications.
  • Infection Suspected infections in the neck area, such as abscesses or cellulitis, can be diagnosed using this imaging modality.
  • Neoplasms The evaluation of tumors or other neoplastic processes in the soft tissues of the neck is another indication for this procedure.

2. Procedure

The procedure for CPT® Code 70490 involves several key steps to ensure accurate imaging of the soft tissues of the neck. The following outlines the procedural steps:

  • Initial Positioning The patient is positioned on the CT examination table, ensuring comfort and stability. Proper alignment is crucial for obtaining high-quality images.
  • Initial Scan An initial pass through the CT scanner is performed to determine the starting position for the imaging. This step is essential for calibrating the scanner and ensuring that the area of interest is adequately covered.
  • CT Scanning The CT scan is conducted as the examination table moves slowly through the scanner. During this phase, multiple X-ray beams are emitted, and electronic detectors capture the radiation that passes through the neck region. This process generates data regarding the varying absorption levels of the soft tissues.
  • Data Processing The collected data is processed by a computer program, which converts the information into two-dimensional cross-sectional images. These images provide a detailed view of the soft tissues in the neck.
  • Image Review The physician reviews the images as they are generated, allowing for real-time assessment. If necessary, the physician may request additional sections to focus on specific areas that require further evaluation.

3. Post-Procedure

After the completion of the CT scan, the patient may be monitored briefly to ensure there are no immediate complications. Since this procedure does not involve the use of contrast material, recovery is typically quick, and patients can resume normal activities shortly after the scan. The physician will analyze the images obtained during the procedure and document any findings in a written report. This report may include observations of any abnormalities detected in the soft tissues of the neck, which will be communicated to the referring physician for further management or treatment as necessary.

Short Descr CT SOFT TISSUE NECK W/O DYE
Medium Descr CT SOFT TISSUE NECK W/O CONTRAST MATERIAL
Long Descr Computed tomography, soft tissue neck; 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 OPPS relative payment weight.
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 180 - Other CT scan

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.
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
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).
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.
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
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
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
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
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
GA Waiver of liability statement issued as required by payer policy, individual case
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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.
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
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
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
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
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
CR Catastrophe/disaster related
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
GW Service not related to the hospice patient's terminal 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).
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.
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
GQ Via asynchronous telecommunications system
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
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
GZ Item or service expected to be denied as not reasonable and necessary
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
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
RT Right side (used to identify procedures performed on the right side of the body)
U2 Medicaid level of care 2, as defined by each state
U6 Medicaid level of care 6, as defined by each state
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
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2003-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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