0Q8F0ZZ
Division Patella, Left to No Qualifier with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | Q Lower Bones |
| Operation | 8 Division |
| Body Part | F Patella, Left |
| Approach | 0 Open |
| 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
Division procedures in the lower bones involve cutting into a bone to separate or transect it, without draining any fluid or gas in the process. The clearest example is an osteotomy performed to realign a deformed limb - cutting through the femur, tibia, or another lower bone so the two segments can be repositioned into better alignment, often before fixation hardware holds the new position in place.
These procedures are used for correcting angular deformities, lengthening or shortening a limb segment, or releasing a bony bridge such as a growth plate bar that is restricting normal bone growth in a child.
Anatomy & Axis Detail
Patella, Left
On the left knee, the patella sits within the quadriceps tendon and patellar ligament, guiding the extensor mechanism through flexion and extension. Dividing this bone means creating a cut through it without removing any portion, a step used in select realignment procedures for patellar instability or in mobilizing a malunited fracture fragment. Surgeons rely on the peripatellar vascular ring to keep both resulting fragments viable, and the direction of the cut is chosen to preserve as much of the articular cartilage on the posterior surface as possible. Documentation should reflect that the tendon and ligament attachments remain intact through the division, distinguishing this from excision-based procedures, and that any subsequent repositioning or fixation of the divided fragments is coded as a separate step.
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
Coders should confirm the note describes cutting the bone through its full thickness to separate it into distinct segments, distinguishing it from a partial cut or notch. If the surgeon also placed fixation hardware to hold the newly divided bone in position, that stabilization step is coded separately as Insertion in addition to the Division.
A frequent mistake is coding Division when the intent and outcome was actually a fusion - if the bone segments were subsequently joined together, Fusion may be the more accurate root operation for that portion of the procedure. Coders should also avoid defaulting to Division for procedures where fluid was drained as part of the cut, since draining changes the root operation to Drainage.