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Official Description

Parathyroid planar imaging (including subtraction, when performed); with tomographic (SPECT), and concurrently acquired computed tomography (CT) for anatomical localization

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Parathyroid planar imaging is a diagnostic imaging procedure that focuses on the parathyroid glands, which are small endocrine glands located near the thyroid gland. This imaging technique is performed after the intravenous administration of a radiopharmaceutical known as TC-99 sestamibi. The initial phase of the procedure involves obtaining planar images shortly after the radiopharmaceutical is administered. These images are crucial for assessing any increased uptake of the radiotracer in the parathyroid tissue compared to the surrounding thyroid tissue, which can indicate the presence of parathyroid disease. Following this, additional images are captured approximately two hours later to evaluate the retention of the radiotracer in the parathyroid glands, providing further insight into their function and potential abnormalities. In cases where subtraction studies are indicated, a second radiopharmaceutical that is selectively taken up by the thyroid gland, such as I-123 or TC-99 pertechnetate, is administered. This allows for the generation of subtraction images that specifically highlight the parathyroid glands by eliminating the background signal from the thyroid. The integration of multiple imaging modalities enhances the diagnostic accuracy for parathyroid conditions. Recent advancements in this field have led to the combination of 99mTc-sestamibi with single photon emission computed tomography (SPECT) and concurrently acquired computed tomography (CT). This innovative approach improves sensitivity by merging anatomical and functional imaging data, thereby facilitating better localization and characterization of parathyroid abnormalities. For coding purposes, CPT® Code 78070 is designated for parathyroid planar imaging alone, while CPT® Code 78071 is used when planar imaging is combined with SPECT studies. CPT® Code 78072 is specifically utilized when both planar imaging and SPECT studies are performed alongside concurrent CT imaging for anatomical localization.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Parathyroid planar imaging is indicated for the evaluation of conditions related to the parathyroid glands. The following are specific indications for this procedure:

  • Primary Hyperparathyroidism - This condition is characterized by excessive secretion of parathyroid hormone (PTH), often due to adenomas or hyperplasia of the parathyroid glands.
  • Secondary Hyperparathyroidism - This occurs as a compensatory response to chronic kidney disease or vitamin D deficiency, leading to increased PTH levels.
  • Tumors of the Parathyroid Glands - Imaging is used to identify and localize parathyroid tumors, which may be benign or malignant.
  • Parathyroid Gland Localization Prior to Surgery - This imaging technique assists in the surgical planning for patients undergoing parathyroidectomy by accurately locating hyperfunctioning parathyroid tissue.

2. Procedure

The procedure for parathyroid planar imaging involves several key steps that ensure accurate imaging and assessment of the parathyroid glands:

  • Step 1: Radiopharmaceutical Administration - The procedure begins with the intravenous administration of the radiopharmaceutical TC-99 sestamibi. This radiotracer is specifically designed to be taken up by the parathyroid glands, allowing for visualization during imaging.
  • Step 2: Initial Planar Imaging - Shortly after the administration of TC-99 sestamibi, initial planar images are obtained. These images are critical for evaluating the uptake of the radiotracer in the parathyroid tissue compared to the thyroid tissue, helping to identify any abnormalities.
  • Step 3: Delayed Imaging - Approximately two hours after the initial imaging, additional planar images are captured. This delayed imaging assesses the retention of the radiotracer in the parathyroid glands, providing further diagnostic information regarding their function.
  • Step 4: Subtraction Studies (if performed) - If subtraction studies are indicated, a second radiopharmaceutical, such as I-123 or TC-99 pertechnetate, is administered. This agent is selectively taken up by the thyroid gland. Subtraction images are then obtained to isolate the parathyroid glands by removing the thyroid background signal.
  • Step 5: SPECT and CT Imaging - For CPT® Code 78072, the procedure includes the integration of single photon emission computed tomography (SPECT) and concurrently acquired computed tomography (CT). This combination enhances the sensitivity of the imaging by providing both functional and anatomical information, allowing for precise localization of any parathyroid abnormalities.

3. Post-Procedure

After the completion of parathyroid planar imaging, there are typically no specific post-procedure care requirements. Patients may resume normal activities immediately following the procedure. However, it is essential to monitor for any potential allergic reactions to the radiopharmaceutical, although such occurrences are rare. The imaging results will be analyzed by a qualified physician, who will interpret the findings and provide a report that may guide further clinical management or surgical intervention if necessary. Follow-up appointments may be scheduled to discuss the results and any subsequent steps based on the findings of the imaging study.

Short Descr PARATHYRD PLANAR W/SPECT&CT
Medium Descr PARATHYROID IMAGING W/TOMOGRAPHIC SPECT & CT
Long Descr Parathyroid planar imaging (including subtraction, when performed); with tomographic (SPECT), and concurrently acquired computed tomography (CT) for anatomical localization
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) 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) I1F - Standard imaging - 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.
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
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
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
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
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.
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
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
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.
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
GW Service not related to the hospice patient's terminal condition
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
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
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
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
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
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2013-01-01 Added Added
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