ICD-10-PCS Billable Code

0M9S00Z

Drainage Foot Bursa and Ligament, Right to No Qualifier with Drainage Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemM Bursae and Ligaments
Operation9 Drainage
Body PartS Foot Bursa and Ligament, Right
Approach0 Open
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

Foot Bursa and Ligament, Right

The foot contains small bursae over bony prominences such as the metatarsal heads and calcaneus, along with the plantar and other ligaments supporting its arches; on the right foot, drainage typically addresses bursitis from footwear pressure, diabetic or pressure-related infection, or a postsurgical fluid collection following bunion or forefoot procedures. Because many patients undergoing foot drainage have underlying diabetes or peripheral vascular disease, infected bursal collections can be a marker of deeper soft tissue or bone involvement, making prompt and complete drainage clinically significant. The superficial position of most foot bursae generally permits straightforward percutaneous or small incisional drainage, but documentation should note the specific bursa or ligament-associated site treated given the foot's many closely spaced anatomical landmarks.

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

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.