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Positron emission tomography (PET) imaging, commonly known as a PET scan, is a sophisticated diagnostic imaging technique that focuses on a limited area of the body, such as the chest, head, or neck. This procedure utilizes a radioactive substance, referred to as a radioisotope, which is administered to the patient to facilitate the acquisition of physiologic images. The fundamental principle behind PET imaging is the detection of positrons emitted from the radioactive substance once it is introduced into the body. This imaging modality is primarily employed for the identification of malignant lesions and for assessing the effectiveness of treatment in patients with malignancies. However, its applications extend beyond oncology, as PET imaging can also be utilized for the diagnosis and evaluation of various other medical conditions. The radioisotopes used in PET imaging are characterized by their short half-lives, necessitating the use of a cyclotron, a type of particle accelerator that produces these isotopes immediately before the imaging procedure. Once generated, the radioisotope is typically tagged to a natural compound, such as glucose, which is then administered to the patient, usually via intravenous injection, although inhalation is a less common route. Following administration, the radioisotope is absorbed by different body tissues and organs, with normal and diseased tissues exhibiting varying rates and levels of uptake. This differential accumulation is visually represented in the PET images, where areas of higher radioisotope concentration appear in distinct colors or brightness levels. Prior to the imaging process, the patient undergoes preparation, which includes the placement of an intravenous line for the administration of the radioisotope. After the injection, the patient is instructed to remain still and rest quietly for a period ranging from 30 to 90 minutes, allowing adequate time for the radioisotope to distribute throughout the targeted body region(s). Once this waiting period is complete, the PET images are captured. A radiologist then reviews these images, paying close attention to variations in radioisotope accumulation within the studied areas. The current PET findings are compared with any previous radiological studies, and a comprehensive written report is generated to summarize the results of the imaging procedure.
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The indications for performing positron emission tomography (PET) imaging are primarily centered around the detection and evaluation of various medical conditions. The following are the explicitly provided indications for this procedure:
The procedure for positron emission tomography (PET) imaging involves several critical steps that ensure accurate imaging results. The following procedural steps are outlined:
After the completion of the PET imaging procedure, there are several important considerations for post-procedure care. Patients are typically monitored for any immediate reactions to the radioisotope, although serious side effects are rare. It is common for patients to resume their normal activities shortly after the procedure, as the radioisotope used in PET imaging is short-lived and is usually eliminated from the body within a few hours. Patients may be advised to drink plenty of fluids to help flush the radioisotope from their system. Additionally, the results of the PET scan will be communicated to the patient during a follow-up appointment, where the radiologist will discuss the findings and any further steps that may be necessary based on the results.
| Short Descr | PET IMAGE LTD AREA | Medium Descr | PET IMAGING LIMITED AREA CHEST HEAD/NECK | Long Descr | Positron emission tomography (PET) imaging; limited area (eg, chest, head/neck) | Status Code | Carriers Price the Code | Global Days | XXX - Global Concept Does Not Apply | PC/TC Indicator (26, TC) | 1 - Diagnostic Tests for Radiology Services | Multiple Procedures (51) | 0 - No payment adjustment rules for multiple 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 | 99 - Concept Does Not Apply | APC Status Indicator | Procedure or Service, Not Discounted when Multiple | 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) | I3F - Echography/ultrasonography - other | MUE | 1 | CCS Clinical Classification | 209 - Radioisotope scan and function studies |
| 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. | PI | Positron emission tomography (pet) or pet/computed tomography (ct) to inform the initial treatment strategy of tumors that are biopsy proven or strongly suspected of being cancerous based on other diagnostic testing | PS | Positron emission tomography (pet) or pet/computed tomography (ct) to inform the subsequent treatment strategy of cancerous tumors when the beneficiary's treating physician determines that the pet study is needed to inform subsequent anti-tumor strategy | Q0 | Investigational clinical service provided in a clinical research study that is in an approved clinical research study | 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 | 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). | 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. | GA | Waiver of liability statement issued as required by payer policy, individual case | GZ | Item or service expected to be denied as not reasonable and necessary | ME | The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional | Q1 | Routine clinical service provided in a clinical research study that is in an approved clinical research study | Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional | 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 | 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 |
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| 2011-01-01 | Changed | Short description changed. |
| 2008-01-01 | Changed | Code description changed. |
| 2005-01-01 | Added | First appearance in code book in 2005. |
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