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Official Description

Sialography, radiological supervision and interpretation

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Sialography, as defined by CPT® Code 70390, is a specialized diagnostic radiographic examination focused on the salivary ducts and glands. This procedure involves the use of a small amount of opaque dye, which is injected into the salivary gland duct. The injection is facilitated through a small, flexible catheter that is carefully inserted through the mouth and directed into the duct. Prior to the injection of the contrast material, an initial x-ray may be performed to ensure that there are no obstructions, such as stones, that could impede the flow of the contrast agent. Following the injection, the patient is typically given a substance, such as lemon juice, to stimulate saliva production. This stimulation is crucial as it allows for a clearer visualization of the salivary drainage into the mouth. Multiple x-rays are then taken from various angles to capture detailed images of the salivary glands and ducts. The physician subsequently reviews these images to identify any abnormalities, including the presence of small stones, strictures, ectasia, or other potential signs of disease affecting the salivary system.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The indications for performing sialography (CPT® Code 70390) include the following conditions and symptoms that may warrant this diagnostic procedure:

  • Salivary Gland Disorders The procedure is indicated for evaluating various disorders of the salivary glands, which may include infections, inflammation, or tumors.
  • Obstruction Sialography is utilized to investigate suspected obstructions in the salivary ducts, such as stones (sialolithiasis) that may block the flow of saliva.
  • Strictures The examination helps in identifying strictures or narrowing of the salivary ducts that could impede saliva drainage.
  • Salivary Duct Ectasia This procedure is indicated for assessing ectasia, which is the abnormal dilation of the salivary ducts.
  • Unexplained Symptoms Sialography may be performed in cases of unexplained symptoms related to salivary function, such as dry mouth or difficulty swallowing.

2. Procedure

The sialography procedure involves several key steps that ensure accurate imaging and assessment of the salivary glands and ducts:

  • Step 1: Preparation The patient is positioned comfortably, and the area around the mouth is prepared for the procedure. The physician may explain the process to the patient to alleviate any concerns.
  • Step 2: Catheter Insertion A small, flexible catheter is carefully inserted through the mouth and into the salivary gland duct. This step requires precision to ensure that the catheter is correctly placed within the duct for effective contrast injection.
  • Step 3: Initial X-ray Before the injection of the opaque dye, an initial x-ray is taken to check for any obstructions, such as stones, that could block the flow of the contrast material. This step is crucial for ensuring the safety and effectiveness of the procedure.
  • Step 4: Contrast Injection A small amount of opaque dye is injected through the catheter into the salivary gland duct. This contrast agent allows for enhanced visualization of the salivary ducts during imaging.
  • Step 5: Saliva Stimulation After the contrast injection, the patient is given a substance, such as lemon juice, to stimulate saliva production. This stimulation is important for visualizing the drainage of saliva into the mouth.
  • Step 6: Imaging Multiple x-rays are taken from various positions to capture detailed images of the salivary glands and ducts as the contrast material flows through them. This step provides critical information regarding the anatomy and function of the salivary system.
  • Step 7: Image Review The physician reviews the obtained images for any signs of abnormalities, including small stones, strictures, ectasia, or other indications of disease affecting the salivary glands and ducts.

3. Post-Procedure

After the completion of the sialography procedure, patients may be monitored for a short period to ensure there are no immediate adverse reactions to the contrast material. It is common for patients to experience some discomfort or swelling in the area where the catheter was inserted. Patients are typically advised to drink plenty of fluids to help flush the contrast material from their system. Additionally, they may be instructed to avoid certain activities or foods that could irritate the salivary glands for a brief period following the procedure. The physician will discuss the findings from the imaging and any necessary follow-up actions based on the results.

Short Descr X-RAY EXAM OF SALIVARY DUCT
Medium Descr SIALOGRAPHY RS&I
Long Descr Sialography, radiological supervision and interpretation
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 T-Packaged Codes
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I1F - Standard imaging - other
MUE 2
CCS Clinical Classification 226 - Other diagnostic radiology and related techniques
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.
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.
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
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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