0F767ZZ
Dilation Hepatic Duct, Left 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 | F Hepatobiliary System and Pancreas |
| Operation | 7 Dilation |
| Body Part | 6 Hepatic Duct, Left |
| 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 procedures widen a narrowed segment of the biliary or pancreatic duct system, most often to relieve a stricture that is blocking the flow of bile or pancreatic enzymes. Strictures can develop from scarring after gallbladder surgery, chronic pancreatitis, or a tumor compressing the duct, and if left untreated they cause bile or digestive fluid to back up, leading to jaundice, infection, or pain.
The procedure typically involves passing a balloon catheter into the narrowed duct, often guided by endoscopy or fluoroscopy, and inflating it to stretch the tissue open; a stent may be left behind afterward to help keep the duct open, though the stent placement itself is coded separately as an Insertion.
Anatomy & Axis Detail
Hepatic Duct, Left
The left hepatic duct collects bile from the left hepatic lobe and joins the right hepatic duct to form the common hepatic duct at the liver hilum. Dilation of the left duct addresses strictures that restrict bile outflow from the left liver segments, which can arise from ischemic injury, prior biliary surgery, or tumor involvement at the hilum. Because the left duct tends to have a longer extrahepatic course than the right before it joins its counterpart, it is often more accessible to percutaneous or endoscopic instrumentation, though its narrower caliber in some patients can make catheter passage technically demanding. The procedure typically uses balloon or mechanical dilators to widen the narrowed segment, frequently paired with temporary stent placement to sustain the improved caliber while healing occurs.
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 operative note needs to clearly document that a narrowed lumen was expanded, and coders should look for the specific duct treated - common bile duct, hepatic duct, or pancreatic duct - since the fourth character body part varies accordingly. Device documentation matters: if a stent is left in place after dilation, that's an additional Insertion code, while a temporary balloon used only to stretch the duct carries no device value. A frequent mistake is coding the balloon dilation and the subsequent stent placement as a single procedure, when ICD-10-PCS requires them as separate codes. Coders should also distinguish endoscopic retrograde approaches (via ERCP) from percutaneous transhepatic approaches, since the approach character differs based on how the scope or catheter reached the duct.