0N833ZZ
Division Parietal Bone, Right to No Qualifier with No Device, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | N Head and Facial Bones |
| Operation | 8 Division |
| Body Part | 3 Parietal Bone, Right |
| Approach | 3 Percutaneous |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Cutting into a body part, without draining fluids and/or gases from the body part, in order to separate or transect a body part
Procedure Overview
This family covers cutting into the skull or facial bones to separate or transect a structure, without draining any fluid or gas as part of the procedure. A typical example is an osteotomy performed to reposition facial bones during craniofacial reconstructive surgery, or cutting through a cranial suture or bony bridge to free up structures for later repositioning, without any component involving fluid evacuation.
These procedures are often a preparatory step within a larger reconstructive operation, such as orthognathic or craniofacial surgery, where bone must be divided before it can be moved, realigned, or grafted into a new position.
Anatomy & Axis Detail
Parietal Bone, Right
The right parietal bone forms part of the lateral and superior skull vault, meeting the frontal bone anteriorly, the temporal bone inferiorly, and its counterpart at the sagittal suture. Division of this bone is performed when a cut is needed through its substance without removing tissue - for instance, as part of a craniotomy flap outline, a craniosynostosis release along the coronal or sagittal suture, or remodeling for a cranial vault deformity. The parietal bone's thinness in some individuals and its close relationship to the underlying dura and superior sagittal sinus near the midline require the surgeon to control cutting depth carefully. This code reflects the separation of bone alone, distinct from any subsequent excision, resection, or reconstruction performed on the mobilized segment.
Approach: Percutaneous
Percutaneous describes entry by needle or instrument puncture through the skin or mucous membrane to reach the site of the procedure, without cutting the tissue open or using a visualizing scope. It differs from Open in that the site itself is never exposed, and from Percutaneous Endoscopic in that no endoscope is used to see internal structures. Common examples include needle biopsies and injections.
Coding & Documentation
Documentation should describe the bone being cut through or transected to separate it into distinct segments, with no mention of draining fluid or gas as part of that specific step. Coders need to distinguish the cutting portion of a larger procedure, which is coded as Division, from any accompanying drainage, which would require its own separate code. A common error is coding an osteotomy as Division when the primary intent and outcome documented is actually repositioning the bone, which is more accurately captured under Reposition, with Division reserved only when separation itself is the distinct, standalone objective.