0C7C3ZZ
Dilation Parotid Duct, Left to No Qualifier with No Device, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | C Mouth and Throat |
| Operation | 7 Dilation |
| Body Part | C Parotid Duct, Left |
| Approach | 3 Percutaneous |
| 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, Left
The left parotid duct follows the same anatomic course as the right, running from the parotid gland across the masseter to its papilla near the upper second molar, and is likewise the conduit through which the gland empties saliva into the mouth. Dilation of the left parotid duct is indicated for ductal strictures, commonly resulting from sialolithiasis, chronic sialadenitis, or iatrogenic scarring, which restrict salivary flow and cause postprandial swelling. As on the right, the approach usually involves sialendoscopy-guided passage of graduated dilators or balloon catheters to enlarge the narrowed segment while preserving the duct's continuity. Given the delicate, thin-walled nature of the duct, careful technique is needed to avoid perforation, and the operative note should specify left-sided laterality and confirm that the lumen was widened rather than incised or reconstructed.
Approach: Percutaneous
Percutaneous describes entry by needle or instrument puncture through the skin or mucous membrane to reach the site of the procedure, without cutting the tissue open or using a visualizing scope. It differs from Open in that the site itself is never exposed, and from Percutaneous Endoscopic in that no endoscope is used to see internal structures. Common examples include needle biopsies and injections.
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.