0B738ZZ
Dilation Main Bronchus, Right to No Qualifier with No Device, Via Natural or Artificial Opening Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | B Respiratory System |
| Operation | 7 Dilation |
| Body Part | 3 Main Bronchus, Right |
| Approach | 8 Via Natural or Artificial Opening Endoscopic |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Expanding an orifice or the lumen of a tubular body part
Procedure Overview
Dilation procedures in the respiratory system widen a narrowed airway, most often the trachea or a bronchus, to restore normal airflow. A balloon catheter or similar device is guided to the narrowed segment, typically through a bronchoscope, and inflated to stretch the tissue open; in some cases a stent is left behind afterward to help hold the airway open, though the dilation itself is the act of expanding the passage.
This procedure is performed when scarring from prior intubation, surgery, radiation, or a tumor pressing on the airway has caused stenosis that makes breathing difficult. Widening the airway can relieve shortness of breath, reduce the work of breathing, and, in urgent cases, prevent complete airway obstruction.
Anatomy & Axis Detail
Main Bronchus, Right
The right main bronchus is the shorter, more vertically oriented of the two primary airways branching from the trachea, carrying air to the entire right lung, and its relatively wide caliber and steep angle make it a common site for aspirated foreign material as well as for stenosis from tumor or granulation tissue. Dilation here relieves an obstructing narrowing using balloon or rigid bronchoscopic technique, restoring airflow to the right upper, middle, and lower lobes that all depend on this single conduit. Because obstruction proximal to the lobar branch points can collapse an entire lung, dilation of the right main bronchus is distinguished in documentation from dilation limited to one of its lobar branches, which affects only part of the lung.
Approach: Via Natural or Artificial Opening Endoscopic
Via Natural or Artificial Opening Endoscopic describes instrumentation introduced through a natural orifice or a surgically created opening while using an endoscope for visualization, as in a routine colonoscopy performed through the anus. It differs from the plain Via Natural or Artificial Opening value by the added scope, and from Percutaneous Endoscopic by using an existing passage rather than a new skin puncture.
Coding & Documentation
Coders should look for documentation confirming that a stenotic segment of the airway was mechanically expanded, typically with balloon bronchoplasty, and should note whether a stent was placed afterward, since stent placement is coded separately as a device value on the Dilation code. Bronchoscopy notes describing "balloon dilation of tracheal stenosis" or "bronchoplasty" generally support this code. A frequent mistake is failing to capture the device qualifier when a stent is left in place, or conversely coding a stent placement alone as Dilation when no actual widening of tissue occurred beforehand.
Commonly Confused With
Dilation is sometimes confused with Restriction, which narrows or partially closes a body part rather than opening it, and with Bypass, which reroutes contents around an obstruction rather than opening the existing pathway. The distinguishing factor is that Dilation works within the native lumen to make it wider, without creating a new route or narrowing anything.