ICD-10-PCS Billable Code

0GWS03Z

Revision Endocrine Gland to No Qualifier with Infusion Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemG Endocrine System
OperationW Revision
Body PartS Endocrine Gland
Approach0 Open
Device3 Infusion Device
QualifierZ No Qualifier

Operation Definition

Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device

Procedure Overview

Revision procedures address a device that was previously implanted in or near an endocrine gland and is no longer working correctly or has shifted out of position. In practice this most often applies to implantable insulin pumps, hormone infusion devices, or reservoirs placed to manage conditions like diabetes, where a catheter has migrated, a pump housing has failed mechanically, or connections need to be repaired.

Rather than replacing the entire device, which would be coded differently as a removal followed by insertion, revision is used when the existing device can be adjusted, repositioned, or partially repaired to restore its intended function. Patients typically undergo this procedure after noticing symptoms of device malfunction, such as inconsistent hormone delivery or delivery site problems, that a follow-up scan or clinical exam confirms is due to the device itself rather than the underlying gland.

Anatomy & Axis Detail

Endocrine Gland

This code applies to revision procedures on an endocrine gland when the specific gland involved, such as thyroid, adrenal, pituitary, or parathyroid, is not identified in the documentation, or when the gland does not have its own dedicated body part value in this classification. As with other endocrine revision codes, it refers to correcting a previously placed device or repairing a prior surgical outcome rather than performing a new resection or excision of gland tissue. Because endocrine glands vary widely in location, size, and surgical approach, from the deeply seated pituitary to the more accessible thyroid, coders should default to this unspecified code only after confirming the operative report does not permit assignment of a more precise, gland-specific revision code.

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: Infusion Device

Infusion Device denotes a device left in place to deliver medication, fluids, or other substances into a body part over time, such as an intrathecal or epidural pump. It is distinct from devices that merely monitor or mechanically support tissue, since its function is ongoing pharmacologic or fluid delivery rather than structural replacement. Common placements include the spinal canal, peritoneal cavity, and vascular access sites.

Coding & Documentation

Coders need documentation clearly stating the device was corrected, repositioned, or repaired in place, with the physical device (or a component of it) remaining the same one originally implanted. If the note describes taking out a malfunctioning device and putting in a brand-new one, that is Removal plus Insertion, not Revision, and this substitution is one of the most common assignment errors in this family. Coders should also confirm which specific device and body part are documented, since revision of an infusion pump reservoir differs from revision of a catheter tip location even within the same procedure encounter.

Commonly Confused With

RemovalRemoval followed by Insertion of a new device is the pairing most often confused with Revision; the deciding factor is whether the original device stays in place with a correction, or whether it is taken out and a new one put in.
RepairRepair, a root operation used outside the ICD-10-PCS device-value framework in other systems, is sometimes mistakenly reached for here, but Revision is the only correct term when a device specifically is being corrected.
RepositionReposition of the underlying gland itself, rather than a device, is a separate family entirely and should not be confused with revision of hardware near that gland.