0T747ZZ
Dilation Kidney Pelvis, 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 | T Urinary System |
| Operation | 7 Dilation |
| Body Part | 4 Kidney Pelvis, 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 urinary tract, most often the ureter, urethra, or bladder neck, to restore normal urine flow through the existing channel. Balloon dilation of a ureteral stricture or urethral dilation for a post-surgical narrowing are typical examples, frequently performed under cystoscopic or fluoroscopic guidance.
Strictures develop from prior surgery, radiation, chronic catheterization, trauma, or scarring, and if left untreated can cause pain, recurrent infection, or kidney injury from obstructed drainage. Dilation offers a less invasive alternative to reconstructive surgery, though some strictures recur and require repeat treatment or an eventual bypass or repair.
Anatomy & Axis Detail
Kidney Pelvis, Left
The left kidney pelvis collects urine from the renal calyces before it drains into the left ureter, and narrowing at the ureteropelvic junction, whether congenital or acquired from stone disease or prior surgery, is the typical reason for intervention. Dilation widens this constricted segment using balloon or mechanical dilators placed percutaneously through the flank or retrograde via ureteroscopy, opening the lumen without excising tissue. The left kidney's higher position beneath the spleen and diaphragm shapes the percutaneous access angle chosen to reach the pelvis safely. As with contralateral procedures, dilation of the pelvis is often a temporizing or adjunctive step performed alongside stent placement, and the documentation should distinguish this widening maneuver from any endopyelotomy incision performed in the same session, since incising the stricture would be coded differently.
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
Coding depends on confirming that the procedure expanded an existing orifice or lumen without creating a new passage or removing tissue; the device value also matters, since a stent or balloon left temporarily in place changes the code. Documentation should specify the exact site dilated, as ureteral, urethral, and bladder-neck dilations use different body part values. A common mistake is coding Dilation when a stricture was actually incised (Division) or excised, rather than mechanically stretched, or overlooking that an intraluminal device was left behind.