0T134J8
Bypass Kidney Pelvis, Right to Colon with Synthetic Substitute, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | T Urinary System |
| Operation | 1 Bypass |
| Body Part | 3 Kidney Pelvis, Right |
| Approach | 4 Percutaneous Endoscopic |
| Device | J Synthetic Substitute |
| Qualifier | 8 Colon |
Operation Definition
Altering the route of passage of the contents of a tubular body part
Procedure Overview
Bypass procedures in the urinary system reroute the flow of urine around a damaged, obstructed, or diseased segment so it can drain through a new path instead. Common examples include an ileal conduit or continent urinary diversion after bladder removal, a ureteroneocystostomy that reconnects a ureter to the bladder at a new site, or a yeloureteral bypass for a blocked ureteropelvic junction. These operations are performed when a tumor, stricture, chronic obstruction, or a failed bladder makes normal drainage unsafe, since backed-up urine can damage the kidneys or cause repeated infections.
Patients typically encounter these procedures alongside cancer treatment, after trauma, or when a congenital narrowing has caused progressive kidney damage. The new pathway may be temporary, to protect a healing repair, or permanent, when the original structure cannot be salvaged.
Anatomy & Axis Detail
Kidney Pelvis, Right
The right kidney pelvis is the funnel-shaped collecting chamber where the major calyces converge before urine passes into the ureter, and it is the segment most often bypassed when chronic ureteropelvic junction obstruction, extensive scarring, or a tumor blocks normal outflow despite an otherwise functioning kidney. A bypass procedure here reroutes urine around the diseased junction, typically by anastomosing the pelvis to a healthier downstream conduit or diverting it externally, preserving renal function that would otherwise deteriorate from sustained back-pressure. Because the pelvis lies deep within the renal sinus, the approach must account for surrounding vasculature and the risk of recurrent stricture at the new connection. Laterality matters for documentation, as the right kidney's proximity to the liver and duodenum can influence surgical approach compared to the left side.
Approach: Percutaneous Endoscopic
Percutaneous Endoscopic combines a puncture through skin or mucous membrane with insertion of an endoscope to visualize the procedure internally, as in laparoscopic cholecystectomy. It is distinguished from plain Percutaneous by the presence of scope-guided visualization, and from Via Natural or Artificial Opening Endoscopic by its route being a new puncture rather than an existing orifice or stoma.
Device: Synthetic Substitute
Synthetic Substitute designates a device made from manufactured, non-biologic material, such as mesh or prosthetic components, used to replace or augment a body part. It is distinguished from the two tissue substitute categories by its artificial composition, which carries different considerations for integration and long-term durability than biologic grafts.
Qualifier: Colon
Colon as a qualifier specifies that a bypass procedure reroutes flow into the large intestine, as seen in urinary diversions like ureterosigmoidostomy where urine is redirected into the colon. It marks the colon as the receiving conduit rather than the primary treated organ. This differs from Colocutaneous, where the created pathway instead exits through the skin.
Coding & Documentation
Coders assign Bypass when documentation confirms a new route was created "from" one urinary structure "to" another (or to the skin, as in a conduit), rather than a repair of the existing channel. The operative note must name both the bypass origin and the qualifier destination, since the seventh-character qualifier changes with the target (bladder, ileum, cutaneous, etc.). A frequent error is coding Bypass when the surgeon actually performed Repair or Dilation of an existing passage rather than constructing an alternate route; another is missing the correct device value when a stent or conduit segment is left in place.