C91B1ZZ
Planar Nuclear Medicine Imaging Salivary Glands, Bilateral to None with None, Technetium 99m (Tc-99m) Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | C Nuclear Medicine |
| Body System | 9 Ear, Nose, Mouth and Throat |
| Operation | 1 Planar Nuclear Medicine Imaging |
| Body Part | B Salivary Glands, Bilateral |
| Approach | 1 Technetium 99m (Tc-99m) |
| Device | Z None |
| Qualifier | Z None |
Operation Definition
Introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions
Procedure Overview
This family addresses planar nuclear medicine imaging of the ear, nose, mouth, and throat region, a study in which an injected or inhaled radioactive tracer is tracked with a gamma camera to produce a single-plane image of structures such as the salivary glands or thyroid-adjacent tissues in this anatomic area. Salivary gland scintigraphy is the most common application, used to evaluate gland function in patients with dry mouth, suspected obstruction, or autoimmune conditions like Sjögren's syndrome, showing how well the glands take up and secrete the tracer over time. The study gives physicians functional information about how these tissues are working that a structural scan like CT or ultrasound cannot provide on its own.
Anatomy & Axis Detail
Salivary Glands, Bilateral
The salivary glands, principally the parotid, submandibular, and sublingual pairs, produce saliva that aids chewing, swallowing, and oral protection, and their function can be disrupted by autoimmune disease such as Sjogren syndrome, obstruction from stones, infection, or prior radiation. Bilateral planar imaging uses an intravenously administered radiotracer, most often pertechnetate, which is taken up and concentrated by functioning glandular tissue and later secreted into the mouth, sometimes after a sialogogue such as lemon juice is given to stimulate release. Sequential images over both sides allow direct side-to-side comparison of uptake and excretion, so asymmetric or delayed clearance on one side points to localized gland dysfunction while symmetric reduction suggests a systemic process affecting all major glands.
Radionuclide: Technetium 99m (Tc-99m)
Technetium 99m (Tc-99m) is the most widely used radionuclide in Nuclear Medicine, valued for its short half-life and favorable gamma energy for imaging bone, cardiac, renal, and other organ systems. In this axis position it records that a technetium-based radiopharmaceutical was the tracer administered for the study, distinguishing it from the many other specific isotopes, such as thallium or iodine compounds, used for more specialized indications.
Coding & Documentation
A coder should confirm the report documents both the introduction of the radiotracer and the acquisition of planar images specifically targeting structures within the ear, nose, mouth, or throat body system, rather than a broader head and neck or endocrine study. Because salivary gland studies often involve sequential images taken at multiple time points to assess uptake and washout, coders sometimes mistakenly think the temporal sequence changes the root operation, when it remains a single planar imaging procedure captured over time rather than a series of separate operations. Another frequent issue is misassigning studies of nearby thyroid tissue to this body system when the thyroid gland has its own distinct body system value.
Commonly Confused With
This family is often confused with thyroid nuclear medicine imaging, since the thyroid sits anatomically close to structures in this region, but thyroid studies are coded under the endocrine system body system rather than ear, nose, mouth and throat. It also overlaps with sialography, a fluoroscopic contrast study of the salivary ducts, which is an entirely different imaging modality performed under radiography rather than nuclear medicine. The distinction rests on confirming the specific anatomic target named in the documentation and recognizing that a radioactive tracer and gamma camera, rather than iodinated contrast and fluoroscopy, defines this family.