0Y6N0ZC
Detachment Foot, Left to Partial 3rd Ray 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 | N Foot, Left |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | C Partial 3rd Ray |
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
Foot, Left
Detachment of the left foot may be performed at multiple levels, transmetatarsal, midfoot at the Lisfranc or Chopart joints, or Syme's disarticulation at the ankle, with the choice driven by how proximally ischemic, infected, or traumatized tissue extends and by the need to leave a viable, well-vascularized margin. Diabetic patients with progressive forefoot gangrene or deep osteomyelitis are the most common candidates, and preserving even a partial foot, when tissue permits, offers meaningfully better balance and gait than an ankle-level or higher amputation. Surgeons weigh soft tissue coverage and blood supply at each candidate level before committing to a plane. Because the anatomic level varies so widely case to case, precise identification of which tarsal or metatarsal bones were divided is essential to the record.
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.
Qualifier: Partial 3rd Ray
Partial 3rd Ray describes a detachment that removes the third toe but spares a portion of the third metatarsal, contrasting with Complete 3rd Ray's full metatarsal excision. It differs from partial amputations of adjacent rays in which digit-metatarsal unit is involved. The qualifier documents a lesser degree of bony resection at that ray.
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.