0PR40KZ
Replacement Thoracic Vertebra to No Qualifier with Nonautologous Tissue Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | P Upper Bones |
| Operation | R Replacement |
| Body Part | 4 Thoracic Vertebra |
| Approach | 0 Open |
| Device | K Nonautologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically takes the place and/or function of all or a portion of a body part
Procedure Overview
Replacement procedures in the upper bones involve removing all or part of a bone in the skull, face, thorax, or upper limb and substituting it with a device or biological material that takes over its structural role. Cranioplasty with a synthetic plate after a skull defect, and prosthetic reconstruction of a portion of the humerus or clavicle following tumor removal, are typical examples.
These procedures are performed when a bone is too damaged, diseased, or absent to be repaired or repositioned, and the patient needs a physical substitute to maintain the shape of the skull or the mechanical function of a limb. The material can be a synthetic implant, such as titanium mesh or bone cement, or biological tissue, such as an allograft.
Anatomy & Axis Detail
Thoracic Vertebra
A thoracic vertebra is one of the twelve spinal bones that anchor the rib cage posteriorly and bear substantial axial load while sheltering the spinal cord through the narrow thoracic canal. Replacement is coded when disease, most often metastatic tumor, severe burst fracture, or osteomyelitis, destroys enough of the vertebral body that it is excised and reconstructed with a synthetic device, such as an expandable cage or structural spacer, rather than repaired or fused with the patient's own tissue alone. Because the thoracic spinal canal is relatively narrow and the cord here has limited blood supply and little room for retraction, these procedures carry meaningful neurologic risk and are usually combined with separately coded instrumented fixation. Documentation should confirm device-based reconstruction of the vertebral body rather than decompression or fusion alone.
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: Nonautologous Tissue Substitute
Nonautologous Tissue Substitute refers to biologic material sourced from a donor or another species, such as an allograft or xenograft, used to replace a body part. It differs from Autologous Tissue Substitute by tissue origin outside the patient's own body, and from Synthetic Substitute by being biologic rather than manufactured material.
Coding & Documentation
Coding from this family requires documentation that a body part was actually taken out and something physically put in its place, not simply reinforced. The device value must match the material used - synthetic versus autologous versus nonautologous tissue - so operative notes describing the graft source matter for accurate code selection. A recurring error is coding replacement when the native bone was left in place and only augmented, which belongs under supplement instead. Coders should also confirm whether the replaced segment is a full bone or only a portion, since this affects the body part value chosen.