0L9Q00Z
Drainage Knee Tendon, Right to No Qualifier with Drainage Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | L Tendons |
| Operation | 9 Drainage |
| Body Part | Q Knee Tendon, Right |
| Approach | 0 Open |
| Device | 0 Drainage Device |
| Qualifier | Z No Qualifier |
Operation Definition
Taking or letting out fluids and/or gases from a body part
Procedure Overview
Tendon drainage procedures remove fluid, such as pus, blood, or inflammatory exudate, that has accumulated around or within a tendon sheath. This is most commonly performed for infectious tenosynovitis, where bacteria have infiltrated the sheath surrounding a tendon and formed a collection that needs to be evacuated to control infection and relieve pressure, or for a hematoma following trauma or surgery that is causing pain or restricting movement.
The procedure can range from a simple needle aspiration to an open incision and irrigation of the tendon sheath when infection is extensive, sometimes with a drain left in place to allow continued fluid egress. Prompt drainage of an infected tendon sheath is important because untreated infection can damage the tendon's gliding mechanism and lead to lasting stiffness or loss of function.
Anatomy & Axis Detail
Knee Tendon, Right
The right knee tendons, most notably the patellar tendon, quadriceps tendon, and the tendons contributing to the pes anserinus, are essential for extending the leg and stabilizing the joint during weight-bearing activity. Fluid collections in this area frequently arise from septic tendinitis, abscess formation following penetrating injury or surgery, or hematoma after acute trauma such as a patellar tendon rupture. Their superficial location anterior to the knee joint makes many collections readily accessible to palpation and ultrasound, though care must be taken to distinguish a tendon sheath collection from a prepatellar bursal effusion or joint effusion, since these are anatomically distinct and coded differently. Drainage is usually accomplished with percutaneous needle aspiration, reserving open techniques for abscesses that fail to resolve or that involve necrotic tendon tissue. Laterality documentation is essential.
Approach: Open
Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.
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
Coders assign a Drainage code when the documentation confirms fluid or gas was taken or let out of the tendon or its sheath, whether by needle aspiration, incision and evacuation, or placement of a drain. The note should identify the tendon or sheath involved and describe the material removed, such as purulent fluid or hematoma, to support medical necessity.
A frequent error is coding Drainage when the procedure actually involved debridement of infected or necrotic tendon tissue alongside fluid removal, which shifts part of the case to Excision or Extirpation depending on what was physically taken out. Another pitfall is failing to capture a drainage device left in place, since the qualifier for a drainage device changes the code and is easy to overlook if the operative note only describes the initial evacuation.