B90D1ZZ
Plain Radiography Salivary Glands, Bilateral to None with None, Low Osmolar Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | B Imaging |
| Body System | 9 Ear, Nose, Mouth and Throat |
| Operation | 0 Plain Radiography |
| Body Part | D Salivary Glands, Bilateral |
| Approach | 1 Low Osmolar |
| Device | Z None |
| Qualifier | Z None |
Operation Definition
Planar display of an image developed from the capture of external ionizing radiation on photographic or photoconductive plate
Procedure Overview
Plain radiography of the ear, nose, mouth, and throat captures a still image of these structures using a brief burst of external x-rays absorbed differently by bone, air, and soft tissue. The resulting image is recorded on a photographic or digital plate, giving clinicians a quick, low-cost look at bony anatomy and radiopaque material in these regions. It has largely been supplemented by CT for detailed evaluation but remains useful for rapid screening.
Common reasons for ordering this imaging include suspected facial or nasal bone fracture, evaluation of foreign bodies lodged in the throat or nasal passages, assessment of sinus opacification, and postoperative checks of hardware placement. It is fast, involves a low radiation dose, and can often be performed without special preparation, making it a practical first step before more advanced imaging is pursued.
Anatomy & Axis Detail
Salivary Glands, Bilateral
Bilateral salivary gland plain radiography surveys the major glandular regions on both sides when disease is not confined to a single gland or side, such as in suspected sialolithiasis affecting multiple glands, chronic sialadenitis, or systemic conditions like Sjögren syndrome that can involve salivary tissue diffusely. Because the parotid, submandibular, and sublingual glands differ in stone radiopacity and are superimposed over different bony landmarks, a bilateral survey helps establish a baseline and identify asymmetry that points toward one gland or side needing focused follow-up. Plain film sensitivity for parenchymal disease is low, so this study functions mainly as a screen for calcified stones and gross structural change rather than a definitive diagnostic tool, with sialography, ultrasound, or cross-sectional imaging typically following when findings are inconclusive or symptoms persist.
Contrast: Low Osmolar
Low Osmolar denotes use of a low-osmolar iodinated contrast agent during an imaging study, the class most commonly used in modern radiographic and CT imaging because it better approximates the osmolality of blood and carries a lower risk of reaction than High Osmolar media. This value distinguishes studies performed with this now-standard contrast type from those using older high-osmolar agents or no contrast at all.
Coding & Documentation
This code is assigned when the report documents a static x-ray image of a specific site within the ear, nose, mouth, or throat body system, and the coder must match the anatomical detail in the order and findings to the correct body part value, since these structures are grouped narrowly. Documentation should specify laterality and the exact structure imaged, such as mastoid, nasal bone, or soft tissue neck, rather than a vague reference to 'facial x-ray.' A frequent error is defaulting to a generic body part when the report actually specifies a more precise site with its own designated value.
Commonly Confused With
Plain radiography is often confused with fluoroscopy of the same region, which produces continuous, real-time images rather than a single static exposure and is typically used for procedures like swallow studies. It also differs from CT, which reconstructs cross-sectional images from many x-ray exposures rather than capturing one planar image. Checking whether the study was a single static image, a live continuous sequence, or a computer-reconstructed multiplanar series determines the correct root operation.