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Resection Thorax Muscle, Left to No Qualifier with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | K Muscles |
| Operation | T Resection |
| Body Part | J Thorax Muscle, Left |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Cutting out or off, without replacement, all of a body part
Procedure Overview
This family of procedures covers the complete surgical removal of an entire named muscle, without any replacement tissue put in its place. Surgeons turn to muscle resection most often when a tumor has grown within or fixed itself to the muscle body, when infection has destroyed the muscle beyond salvage, or when severe trauma has left the tissue non-viable. Removing the whole muscle, rather than trimming away only the diseased portion, is typically chosen when partial removal would leave behind disease or dead tissue that could spread infection or allow a cancer to recur.
Because an entire muscle is taken, these operations often affect movement or strength at the joint the muscle once controlled, so they are frequently paired with reconstructive planning, physical therapy, or a transfer procedure using a nearby muscle to take over the lost function. Patients considering or recovering from this kind of surgery are usually managing a serious underlying condition such as sarcoma, gas gangrene, or a crush injury rather than a routine orthopedic complaint.
Anatomy & Axis Detail
Thorax Muscle, Left
The left thorax muscle group, principally the pectoralis major and minor along with the intercostal muscles, supports arm adduction, internal rotation, and the mechanical work of respiration. Complete resection of a named muscle here most often accompanies treatment of an invasive chest wall or breast malignancy, a deep sternal wound infection eroding pectoral tissue, or trauma with nonviable muscle. Because the intercostal muscles are thin and interdigitate with the rib cage, isolating and removing a whole intercostal muscle is technically distinct from removing the thicker pectoralis muscles, and the operative report should specify which thorax muscle was taken in full to support accurate code assignment separate from any concurrent chest wall or breast procedure.
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
The operative note must clearly document that the entire named muscle was excised, not just a margin, lesion, or portion of it - phrases like "total resection of the gastrocnemius" support this code, while "debulking" or "partial excision" point toward Excision instead. The pathology or surgeon's description of the specimen (whole muscle versus a wedge or nodule) is the deciding factor coders rely on when the note is ambiguous. The most frequent assignment error is defaulting to Resection whenever a muscle mass is removed, without confirming the surgeon took the entire muscle rather than just the tumor within it. A second common mistake is missing laterality or the specific muscle name, which affects the body part value and can misrepresent the extent of surgery performed.
Commonly Confused With
Resection is easily confused with Excision, which cuts out only a portion of the muscle - the distinguishing question is always "all of the muscle or part of it?" It is also sometimes mixed up with Detachment, used when a limb or body part is amputated at a joint level rather than a single muscle being taken out, and with Destruction, which eliminates tissue with energy (such as cautery) rather than cutting it out and removing a specimen.