0XRM07P
Replacement Thumb, Left to Toe, Left with Autologous Tissue Substitute, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | X Anatomical Regions, Upper Extremities |
| Operation | R Replacement |
| Body Part | M Thumb, Left |
| Approach | 0 Open |
| Device | 7 Autologous Tissue Substitute |
| Qualifier | P Toe, Left |
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
This family describes procedures that put in biological or synthetic material to physically take the place of all or part of an upper extremity structure that has been removed or that is missing, when the replaced structure does not have its own dedicated body part value elsewhere in the system. An example is placement of a soft tissue or skin substitute over an extremity defect after tissue has been excised, where the graft material takes over the physical role of the tissue that was taken away.
This kind of procedure is generally performed after trauma, tumor removal, or chronic wound care has left a defect that needs a substitute structure rather than simple closure, and it is distinguished from repair because actual replacement material becomes a permanent stand-in for the missing anatomy rather than the native tissue being restored to its own original form.
Anatomy & Axis Detail
Thumb, Left
Replacement of the left thumb involves removing all or part of the digit and substituting it with a device or biological material that takes over its anatomic role, a procedure reserved for situations where the native thumb cannot be salvaged, such as extensive crush trauma, malignancy, or failed prior reconstruction. Because the thumb accounts for a large share of overall hand function through its ability to oppose the fingers, restoring even a rudimentary structure through prosthetic or transferred tissue can meaningfully improve grasp. Coding this procedure requires confirming that the original thumb tissue was taken out and a substitute physically put in its place, as opposed to augmentation of existing tissue, which would instead be coded as supplement.
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: Autologous Tissue Substitute
Autologous Tissue Substitute identifies a device value where material harvested from the patient's own body, such as an autograft, is used to replace or reconstruct a body part. Its defining feature is tissue origin from the patient, setting it apart from Nonautologous Tissue Substitute, sourced from a donor or animal, and Synthetic Substitute, made of manufactured material.
Qualifier: Toe, Left
Toe, Left specifies that a detachment procedure involves a digit of the left foot, paralleling the right-sided qualifier and differing from it only in laterality. It applies when the amputation is limited to the toe rather than extending into the metatarsal, distinguishing it from the ray-level qualifiers. Correct laterality documentation matters for bilateral or staged foot procedures.
Coding & Documentation
Coders select this family when documentation confirms that graft or substitute material was placed to take over the physical role of excised or missing tissue in a regional upper extremity area not covered by a specific named body part, and the note should specify the type of material (autograft, allograft, or synthetic) and confirm that it replaces rather than merely reinforces existing tissue. A frequent assignment error is confusing Replacement with Supplement when the surgeon actually left native tissue in place and simply added reinforcing material on top of it, which calls for Supplement instead. Another common mistake is missing the qualifier for graft type, since PCS values distinguish autologous from nonautologous and synthetic substitutes, and picking the wrong one changes the code entirely.