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Official Description

Computed tomography, abdomen; without contrast material

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Computed tomography (CT) of the abdomen, as described by CPT® Code 74150, is a diagnostic imaging procedure that provides detailed visualization of the abdominal organs and tissues without the use of contrast material. This imaging technique employs multiple narrow X-ray beams that rotate around a single axis, capturing a series of two-dimensional (2D) images from various angles. The absence of contrast material means that the images are generated based solely on the natural density differences of the tissues within the abdomen. The data collected during the scan is processed by computer software to create thin, cross-sectional slices of the targeted area, which can be further compiled into three-dimensional (3D) models for enhanced visualization. During the procedure, the patient lies on a table that moves into the CT scanner, allowing for the acquisition of images of the abdomen. The physician interprets these images to identify potential causes of abdominal symptoms such as pain, swelling, or fever, and to investigate other conditions like appendicitis, kidney stones, tumors, abscesses, hernias, infections, or internal injuries. The findings from the CT scan are documented in a written report, which includes any noted abnormalities and the physician's interpretation of the results.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 74150 is indicated for various clinical scenarios where detailed imaging of the abdomen is necessary. The following conditions and symptoms may warrant the use of this diagnostic tool:

  • Abdominal Pain The procedure is often performed to investigate the underlying causes of unexplained abdominal pain, helping to identify potential issues such as organ dysfunction or injury.
  • Swelling In cases of abdominal swelling, CT imaging can assist in determining the source of the swelling, whether it be fluid accumulation, tumors, or other abnormalities.
  • Fever When a patient presents with fever and abdominal symptoms, a CT scan can help identify infections or inflammatory processes within the abdominal cavity.
  • Suspected Appendicitis The imaging is crucial in evaluating suspected appendicitis, allowing for timely diagnosis and intervention.
  • Kidney Stones CT scans are effective in detecting kidney stones, providing clear images that can guide treatment decisions.
  • Locating Tumors, Abscesses, or Masses The procedure aids in the identification and localization of tumors, abscesses, or other masses within the abdominal region.
  • Evaluation of Hernias CT imaging can be utilized to assess the presence and extent of hernias in the abdominal area.
  • Assessment of Infections or Internal Injury The procedure is also indicated for evaluating potential infections or internal injuries resulting from trauma.

2. Procedure

The procedure for CPT® Code 74150 involves several key steps to ensure accurate imaging of the abdomen without the use of contrast material. The following outlines the procedural steps:

  • Step 1: Patient Preparation The patient is positioned comfortably on the CT scanner table, ensuring that they are in a stable and relaxed state. It is important for the patient to remain still during the imaging process to avoid motion artifacts that could compromise image quality.
  • Step 2: Scanning Process Once the patient is positioned, the CT scanner is activated. The scanner utilizes multiple narrow X-ray beams that rotate around the patient, capturing a series of 2D images from various angles. The absence of contrast material means that the images rely on the natural differences in tissue density to create clear visualizations of the abdominal structures.
  • Step 3: Image Acquisition The CT machine takes a series of cross-sectional images of the abdomen, which are then processed by computer software. This software compiles the data into detailed images that can be viewed individually or stacked to create 3D models of the abdominal area.
  • Step 4: Image Review After the imaging is complete, the physician reviews the obtained images for any abnormalities or areas of concern. This review is critical for diagnosing conditions such as appendicitis, kidney stones, tumors, or other abdominal issues.
  • Step 5: Documentation The physician documents the findings from the CT scan, noting any abnormalities observed in the images. A written interpretation of the results is then provided, which may include recommendations for further evaluation or treatment based on the findings.

3. Post-Procedure

After the completion of the CT scan under CPT® Code 74150, there are generally no specific post-procedure care requirements due to the non-invasive nature of the imaging. Patients can typically resume their normal activities immediately following the procedure. However, it is essential for the physician to communicate the results of the scan to the patient, discussing any findings and potential next steps in their care. If any abnormalities are detected, further diagnostic testing or treatment may be recommended based on the physician's interpretation of the images.

Short Descr CT ABDOMEN W/O CONTRAST
Medium Descr CT ABDOMEN W/O CONTRAST MATERIAL
Long Descr Computed tomography, abdomen; 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) I2B - Advanced imaging - CAT/CT/CTA: other
MUE 1
CCS Clinical Classification 179 - CT scan abdomen

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
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
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).
GC This service has been performed in part by a resident under the direction of a teaching physician
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
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
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.
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
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
ME The order for this service adheres to 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
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
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
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
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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).
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.
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.
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
ET Emergency services
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
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
LT Left side (used to identify procedures performed on the left side of the body)
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
MB Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access
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
Q3 Live kidney donor surgery and related services
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
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
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
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
Date
Action
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2025-01-01 Changed Short Description changed.
2003-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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