ICD-10-PCS Billable Code

079B00Z

Drainage Lymphatic, Mesenteric to No Qualifier with Drainage Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body System7 Lymphatic and Hemic Systems
Operation9 Drainage
Body PartB Lymphatic, Mesenteric
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 excess fluid that has accumulated in a lymphatic or hemic structure, such as a lymphocele, seroma, or enlarged lymph node collection. This is commonly done with a needle or catheter to relieve pressure, discomfort, or the risk of infection, and can be a one-time aspiration or managed with a temporary drain left in place over several days.

These procedures are frequently needed after other surgeries, particularly cancer operations involving lymph node removal, where disrupted lymphatic channels can leak fluid into surrounding tissue. Draining the collection helps the area heal and prevents the fluid from putting pressure on nearby structures.

In some cases, fluid drained this way is also sent for laboratory analysis to check for infection or malignancy, which does not change the nature of the procedure itself.

Anatomy & Axis Detail

Lymphatic, Mesenteric

Mesenteric lymphatic tissue lies within the folds of the small and large bowel mesentery, draining the intestines and playing a central role in absorbing dietary fat as chyle before it reaches the cisterna chyli and thoracic duct. Drainage of the mesenteric lymphatics is performed for collections such as a mesenteric lymphocele, chylous ascites localized to a nodal packet, or postoperative fluid accumulation following abdominal or oncologic surgery that disrupted this network. Because the mesentery is intimately associated with the bowel's blood supply, any drainage procedure here requires careful attention to avoid injuring adjacent vessels feeding the intestine. Mesenteric lymphatic pathology is also closely tied to conditions like intestinal lymphangiectasia and certain malignancies, which can cause chronic lymphatic leakage requiring intervention.

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

This code family applies when documentation describes taking fluid out of a lymphatic or hemic body part without removing any solid tissue. The approach, whether percutaneous needle aspiration or an open procedure, and whether a drainage device is left behind, both affect the correct code selection.

The most common mixup arises when a lymph node biopsy is performed by needle aspiration purely to obtain fluid or cells for diagnosis; this is coded as Drainage with a diagnostic qualifier rather than Excision, since no solid tissue sample is taken. Coders should also verify whether a drain was left in place, since that detail affects the device value reported.

Commonly Confused With

ExcisionDrainage is most often confused with Excision when a lymph node is sampled, the distinction being whether a fluid specimen or a tissue specimen was obtained.
ExtirpationIt also overlaps with Extirpation when a clotted or solidified collection is removed rather than free-flowing fluid, since that involves taking out solid matter rather than draining liquid.