0Y640ZZ
Detachment Hindquarter, Bilateral to No Qualifier with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | Y Anatomical Regions, Lower Extremities |
| Operation | 6 Detachment |
| Body Part | 4 Hindquarter, Bilateral |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Cutting off all or a portion of the upper or lower extremities
Procedure Overview
This family covers amputation procedures of the lower extremity - removing all or part of a leg, thigh, knee, ankle, or foot when the limb can no longer be saved or is causing life-threatening harm. Common reasons include severe peripheral vascular disease that has cut off blood flow, uncontrolled diabetic infection, tissue death from trauma, malignant tumors, or crushing injuries where reconstruction isn't possible. The level chosen - above the knee, below the knee, through the ankle, or partial foot - depends on how much healthy, well-perfused tissue remains and how well the residual limb will support a prosthesis afterward.
Recovery involves wound healing, pain management, and eventually fitting for a prosthetic device and rehabilitation to relearn mobility. Surgeons try to preserve as much functional length as possible while ensuring the remaining tissue has adequate blood supply to heal.
Anatomy & Axis Detail
Hindquarter, Bilateral
Bilateral hindquarter detachment removes both lower extremities along with portions of the pelvis on each side, an operation performed only in the most extreme circumstances such as symmetric or midline pelvic malignancy, catastrophic bilateral trauma, or overwhelming necrotizing infection. Because both limbs and supporting pelvic bone are lost simultaneously, the physiologic burden of blood loss and the loss of any weight-bearing skeleton for prosthetic fitting are far greater than staged unilateral procedures. Vascular control of both iliac systems and careful hemostasis are central technical concerns, and the operative note should clearly document that pelvic bone was divided bilaterally rather than describing two separate hip disarticulations. Postoperative care centers on wound management and seated mobility given the absence of any residual limb.
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 assign Detachment codes based on the specific anatomical level documented in the operative note - the body part value distinguishes 1st ray, 2nd through 5th ray, foot, ankle, lower leg, knee, upper leg, and hip disarticulation, so the note must state the exact bone or joint level transected. The qualifier further specifies complete versus high or low variants at some levels. A frequent error is defaulting to a generic 'leg amputation' code when the documentation actually supports a more precise ray- or joint-level qualifier, or missing that a revision amputation (converting a failed below-knee stump to above-knee) is coded as a new Detachment procedure at the higher level rather than an Excision.