ICD-10-PCS Billable Code

0ST80ZZ

Resection Sacroiliac Joint, Left to No Qualifier with No Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemS Lower Joints
OperationT Resection
Body Part8 Sacroiliac Joint, Left
Approach0 Open
DeviceZ No Device
QualifierZ No Qualifier

Operation Definition

Cutting out or off, without replacement, all of a body part

Procedure Overview

Resection in the lower joints means surgically removing an entire joint or joint structure without replacing it with any device. This is less common than joint replacement, typically reserved for severe infection that has destroyed a joint, a tumor requiring removal of the joint surfaces, or a salvage option after a failed implant cannot be replaced right away. A well-known example is resection arthroplasty of the hip, sometimes called a Girdlestone procedure, where the femoral head is removed and the space fills with scar tissue.

Because no artificial joint is inserted, patients typically have a shortened limb and altered mechanics, and mobility aids or later reconstruction may follow. This trade-off is usually accepted specifically to clear infection or malignant tissue threatening the limb.

Anatomy & Axis Detail

Sacroiliac Joint, Left

On the left side, the sacroiliac joint links the sacrum to the ilium through a combination of a small synovial anterior segment and a much larger fibrous posterior portion, giving the pelvic ring its rigidity. Resection of this joint is undertaken for advanced sacroiliitis, pelvic ring tumors, chronic septic arthritis, or intractable pain from prior trauma, and it entails removing the full thickness of articular surfaces on both the sacral and iliac sides. The proximity to the L5 and sacral nerve roots, the presacral venous plexus, and the sciatic notch makes this a technically demanding dissection, typically approached posteriorly. Because complete resection destabilizes the pelvic ring, it is almost always accompanied by fixation or fusion, which coders must capture as a distinct procedure alongside the resection code for the excised joint tissue.

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.

Coding & Documentation

A coder should look for documentation that the joint or a defined structure was entirely removed and nothing was implanted in its place; if a spacer or prosthesis went in during the same operation, the case likely calls for Replacement or a combination of codes instead of Resection alone. Infection control, pathology reports for malignancy, and prior failed hardware are common clinical justifications. The most frequent error is coding Resection when an antibiotic cement spacer was actually placed, since a spacer typically reclassifies the procedure as Replacement.

Commonly Confused With

ExcisionResection is easily confused with Excision, but Excision removes only a portion of a body part while Resection removes the joint structure entirely.
ReplacementIt also borders Replacement whenever a temporary spacer or definitive implant is placed in the same session, so two-stage revision notes need careful review to determine whether the first stage was pure Resection or Resection combined with Replacement.