0C7B7ZZ
Dilation Parotid Duct, Right to No Qualifier with No Device, Via Natural or Artificial Opening Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | C Mouth and Throat |
| Operation | 7 Dilation |
| Body Part | B Parotid Duct, Right |
| Approach | 7 Via Natural or Artificial Opening |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Expanding an orifice or the lumen of a tubular body part
Procedure Overview
Dilation widens a narrowed passage in the mouth or throat, most commonly an esophageal or pharyngeal stricture that has developed from scarring, prior surgery, radiation, or chronic reflux. The narrowed area is stretched open using a balloon, series of graduated dilators, or a similar instrument passed through the mouth, restoring a more normal diameter so food and liquids can pass comfortably again.
Patients typically undergo this procedure because of progressive difficulty swallowing, and relief is often immediate, though strictures can recur and repeat dilations are sometimes needed over time. It is generally performed endoscopically as an outpatient procedure with sedation.
Anatomy & Axis Detail
Parotid Duct, Right
The right parotid duct, or Stensen's duct, carries saliva from the parotid gland forward across the masseter muscle to open into the oral cavity opposite the upper second molar. Dilation of this duct is performed when a stricture, often from a prior stone, inflammation, or scarring, narrows the lumen and impairs salivary outflow, causing recurrent swelling and pain, particularly with eating. The procedure typically involves passing dilators or a balloon catheter, often under sialendoscopic guidance, to stretch the narrowed segment and restore ductal patency without cutting or removing tissue. Because the duct's papilla and course are small and can be difficult to cannulate, precise identification of the stricture site is important, and documentation should confirm the duct was widened in place rather than surgically incised or excised.
Approach: Via Natural or Artificial Opening
Via Natural or Artificial Opening means the instrument reaches the target site by passing through an existing body orifice, such as the mouth or urethra, or a surgically created opening like a stoma, without additional incision or scope guidance. It is distinguished from the Endoscopic variant by the absence of a visualizing scope, and from External by actually traversing into the body through that opening.
Coding & Documentation
The coder should confirm from the operative report that an existing lumen was mechanically widened, and identify whether a device such as a balloon or stent was left in place afterward, since this affects the device value assigned. The approach is almost always Via Natural or Artificial Opening Endoscopic when performed through the mouth with a scope. A frequent error is coding Dilation when the procedure description actually indicates the passage was newly created or rerouted, which belongs under Bypass, or missing a temporary intraluminal device left behind after balloon dilation. Clear documentation of the specific site dilated, such as the pharyngoesophageal junction versus a lower esophageal location outside this body system, is essential for correct code selection.