ICD-10-PCS Billable Code

0M9R30Z

Drainage Ankle Bursa and Ligament, Left to No Qualifier with Drainage Device, Percutaneous Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemM Bursae and Ligaments
Operation9 Drainage
Body PartR Ankle Bursa and Ligament, Left
Approach3 Percutaneous
Device0 Drainage Device
QualifierZ 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

Ankle Bursa and Ligament, Left

On the left ankle, the retrocalcaneal bursa and surrounding stabilizing ligaments are subject to the same friction-related and inflammatory processes as the right side, with drainage indicated for infected or symptomatic bursitis, chronic inflammatory fluid buildup, or a postoperative hematoma near a ligament repair. The ankle's limited soft tissue coverage means collections here are often palpable and superficial, but proximity to tendons such as the Achilles and peroneals requires careful technique to avoid injury during needle placement or incision. As with the right side, laterality and precise bursal identification are essential for accurate documentation, particularly since chronic ankle instability procedures often involve concurrent ligament work that must be distinguished from a separate drainage of an inflamed bursa.

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.

Commonly Confused With

ExtirpationDrainage is frequently confused with Extirpation, which removes solid matter such as a calcified deposit or loose body rather than fluid.
ExcisionIt is also distinct from Excision, where a piece of the bursa wall itself is cut out, sometimes performed alongside drainage when a chronically inflamed bursa is removed rather than simply emptied.