0X6L0Z1
Detachment Thumb, Right to High with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | X Anatomical Regions, Upper Extremities |
| Operation | 6 Detachment |
| Body Part | L Thumb, Right |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | 1 High |
Operation Definition
Cutting off all or a portion of the upper or lower extremities
Procedure Overview
Detachment procedures in this family involve amputation of all or part of the upper extremity at a level not captured by the more specific arm, forearm, or hand body system codes, cutting through the limb to remove a portion of it. Reasons for these operations include severe trauma, infection that has not responded to other treatment, tumors, or complications of vascular disease that leave the tissue non-viable.
The surgery is performed at a defined anatomical level, and the choice of that level balances removing all compromised tissue against preserving as much functional limb length as possible for future prosthetic fitting and rehabilitation.
Anatomy & Axis Detail
Thumb, Right
The right thumb is a two-phalanx digit with its own carpometacarpal joint providing wide mobility, opposition capability against the other fingers, and a dedicated blood supply from the princeps pollicis artery, making it functionally the most important digit for pinch and grip. Detachment of the thumb is performed for locally aggressive tumors, non-reconstructible trauma such as a mangled or avulsed thumb, or infection unresponsive to lesser debridement, and because the thumb accounts for a large share of overall hand function, surgeons favor preserving length or considering reconstruction whenever possible. The procedure requires ligating the princeps pollicis artery and its branches and transecting the digital nerves supplying the thumb, with the level of amputation, whether through the phalanx, interphalangeal joint, or at the metacarpal base, documented precisely given its outsized effect on residual hand grasp and pinch strength.
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: High
High qualifies a partial toe detachment as occurring at the proximal portion of the digit, closer to the foot, when the amputation does not remove the entire toe. It is distinguished from Mid and Low, which specify progressively more distal levels of the remaining partial toe. The choice among these reflects exactly how much of the toe was preserved after detachment.
Coding & Documentation
Coders select from this family when the documentation specifies detachment at the shoulder or another level classified under the general upper extremity body system rather than a level with its own dedicated body part, such as the specific bones of the forearm or hand. The amputation level recorded in the operative note is essential, since it determines both the correct body part value and the qualifier describing the level of detachment, and miscoding often happens when the level documented doesn't match the code selected. Revision of a prior amputation stump is also coded here when tissue is further removed, and should not be mistaken for a routine wound debridement.
Commonly Confused With
Excision is sometimes confused with Detachment when only a small amount of tissue is removed from the extremity, but Detachment specifically applies to cutting through the limb itself rather than just removing a lesion or damaged tissue while preserving the limb's structure. Amputation coded to the arm or hand-specific body systems is the other close neighbor, distinguished purely by the anatomical level at which the cut is made.