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Official Description

Decompression fasciotomy, forearm, with brachial artery exploration

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Decompression fasciotomy is a surgical procedure aimed at alleviating pressure within muscle compartments, specifically in the forearm, to treat a condition known as compartment syndrome. This syndrome occurs when swelling within a muscle compartment leads to increased pressure, which can compress blood vessels and nerves, potentially resulting in severe complications such as permanent muscle and nerve damage. The muscle compartments in the forearm are encased in a tough layer of connective tissue called fascia, which does not stretch. When swelling occurs, the fascia restricts the expansion of the muscle compartment, leading to compromised blood flow. In the forearm, the brachial artery, which supplies blood to the arm and hand, may also be at risk of damage due to this increased pressure. The forearm contains two primary compartments: the flexor (volar) compartment, which houses muscles that flex the wrist and fingers, and the extensor (dorsal) compartment, which contains muscles responsible for extending the wrist and fingers. The procedure typically begins with decompression of the flexor compartment, followed by exploration of the brachial artery to assess any potential damage. If necessary, the extensor compartment may also be decompressed. The surgical approach involves making incisions through the skin and fascia to relieve pressure, inspect muscle and nerve integrity, and remove any nonviable tissue. The incisions are left open to allow for swelling reduction before final closure, which usually occurs within a few days post-surgery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The decompression fasciotomy procedure is indicated for the treatment of compartment syndrome, which can arise from various conditions leading to increased pressure within the muscle compartments of the forearm. The following are specific indications for performing this procedure:

  • Compartment Syndrome A condition characterized by increased pressure within a muscle compartment, leading to compromised blood flow and potential muscle and nerve damage.
  • Swelling Due to Trauma Injury to the forearm that results in swelling, which may necessitate surgical intervention to relieve pressure.
  • Vascular Compromise Situations where blood vessels, particularly the brachial artery, are at risk of damage due to elevated compartment pressures.

2. Procedure

The decompression fasciotomy procedure involves several critical steps to effectively relieve pressure within the forearm compartments. The following outlines the procedural steps:

  • Step 1: Incision A curvilinear skin incision is made, starting proximal to the antecubital fossa at the elbow crease and extending down to the middle of the palm. Alternatively, a lazy S type incision may be utilized, beginning at the elbow crease on the ulnar side, curving to the radial side at mid-forearm, and returning to the ulnar side at the wrist. This incision is then extended into the mid palm.
  • Step 2: Fascia Opening The incision is deepened through the fascia, following the same line as the skin incision. This allows access to the underlying muscle compartments.
  • Step 3: Pressure Check Compartment pressure is assessed to confirm that the deep flexor muscles have been adequately decompressed, ensuring that blood flow is restored.
  • Step 4: Brachial Artery Exploration The brachial artery is exposed within the antecubital fossa and traced distally to where it bifurcates into the radial and ulnar arteries. Exploration may also extend proximally to assess for any damage.
  • Step 5: Additional Procedures If damage to the brachial artery is identified, a separately reportable bypass graft procedure may be performed. If the extensor compartment also requires decompression, a dorsal incision is made over the extensor muscles, and the fascia over each of the dorsal compartments is opened, ensuring to incise fascia over both superficial and deep muscle bellies.
  • Step 6: Final Inspection Muscle tissue and nerves are inspected for viability, and any nonviable tissue is debrided using sharp excision to promote healing.
  • Step 7: Wound Management The skin and fascial incisions are left open and covered with a dressing. The patient is monitored and returned to the operating room for wound closure once swelling subsides, typically within 24 to 72 hours.

3. Post-Procedure

After the decompression fasciotomy, the patient will require careful monitoring to assess for any complications and to ensure proper healing. The incisions are left open to allow for swelling to decrease, and the patient is typically observed for 24 to 72 hours before returning to the operating room for closure of the wounds. Post-operative care may include pain management, monitoring for signs of infection, and physical therapy to restore function in the affected arm. It is crucial to follow up on the status of the muscle and nerve recovery to prevent long-term complications.

Short Descr DECOMPRESSION OF FOREARM
Medium Descr DECOMPRESSION FASCT F/ARM W/BRACH ART EXPL
Long Descr Decompression fasciotomy, forearm, with brachial artery exploration
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 160 - Other therapeutic procedures on muscles and tendons
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
GC This service has been performed in part by a resident under the direction of a teaching physician
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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