0M9P30Z
Drainage Knee Bursa and Ligament, Left to No Qualifier with Drainage Device, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | M Bursae and Ligaments |
| Operation | 9 Drainage |
| Body Part | P Knee Bursa and Ligament, Left |
| Approach | 3 Percutaneous |
| Device | 0 Drainage Device |
| Qualifier | Z No Qualifier |
Operation Definition
Taking or letting out fluids and/or gases from a body part
Procedure Overview
Drainage procedures remove fluid or gas that has accumulated within a bursa, most often as a result of inflammation, infection, or trauma. Bursae are small fluid-filled sacs that cushion joints, and when they become irritated or infected they can swell painfully with excess fluid, a condition commonly known as bursitis. Draining the fluid relieves pressure and pain, and in infected cases removes purulent material that antibiotics alone cannot clear.
This can be done with a needle and syringe for straightforward aspiration of a swollen bursa, such as the olecranon bursa at the elbow or the prepatellar bursa at the knee, or through a small incision when the fluid is thicker or infection requires more thorough evacuation.
Drainage is typically a first-line treatment for symptomatic bursitis and is often paired with fluid analysis to identify infection, crystal disease, or bleeding as the underlying cause.
Anatomy & Axis Detail
Knee Bursa and Ligament, Left
On the left knee, drainage of the bursae and ligamentous structures follows the same principles as the right side but must be coded with correct laterality, since the prepatellar, infrapatellar, and pes anserine bursae are each distinct sites. This procedure is typically performed for bursitis caused by chronic kneeling or trauma, a septic bursa requiring urgent decompression, or a hematoma or seroma following knee surgery such as ligament reconstruction. Distinguishing bursal fluid collections from effusion within the knee joint itself is clinically important, as bursal drainage does not involve entering the joint capsule. The superficial location of most knee bursae generally allows straightforward percutaneous drainage, though deeper or recurrent collections may prompt an open approach.
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.
Device: Drainage Device
Drainage Device denotes a device such as a tube or catheter left in place to remove fluid, blood, or air from a body part or cavity following a procedure. It is distinguished from Monitoring Device, which senses and records physiologic data rather than evacuating substances from the body.
Coding & Documentation
The operative or procedure note should describe fluid, pus, or blood being taken out of a bursa, with language such as aspiration, needle drainage, or incision and drainage. Coders need to confirm the target is a bursa rather than a joint space, since joint aspiration is coded to a different body system.
A common assignment error is failing to distinguish diagnostic aspiration from therapeutic drainage when both occur in the same encounter, or missing that a device such as a drain was left in place, which affects the approach and device value. Documentation should also specify whether the procedure was open or percutaneous, since this changes the approach character.