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Official Description

Excision, tumor, soft tissue of thigh or knee area, subfascial (eg, intramuscular); less than 5 cm

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 27328 refers to the excision of a tumor located in the soft tissue of the thigh or knee area, specifically when the tumor is subfascial, meaning it lies beneath the fascia. The term "soft tissue" encompasses various structures, including subcutaneous fat, connective tissue, fascia, muscles, tendons, blood vessels, lymph vessels, nerves, and the tissues surrounding joints. Tumors in these areas can be either benign or malignant. Typically, benign tumors are treated through excision, while small malignant or indeterminate tumors may also be excised if they have well-defined margins. The procedure involves making an incision over the tumor, which may require the creation and elevation of a skin flap depending on the tumor's location. Once the overlying tissue is dissected, the soft tissue mass is exposed, allowing for the excision of the tumor along with a margin of healthy tissue to ensure complete removal. In some cases, a frozen section may be performed to verify that the margins are free of tumor cells, which is a separate reportable procedure. After the excision, drains may be placed as necessary, and the surgical wound is closed in layers. It is important to note that for tumors located in the subcutaneous fat or connective tissue, a different code, CPT® 27327, is used for excisions of tumors less than 3 cm, while CPT® 27328 is specifically designated for tumors that are less than 5 cm and located below the fascia, including those within muscle tissue.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 27328 is indicated for the excision of soft tissue tumors located in the thigh or knee area that are subfascial in nature. The following conditions may warrant this procedure:

  • Benign Tumors These tumors are typically non-cancerous and may require excision to alleviate symptoms or prevent complications.
  • Malignant Tumors Small malignant tumors or those of indeterminate nature may be excised if they have well-defined margins, allowing for complete removal while minimizing the risk of cancer spread.
  • Indeterminate Tumors Tumors that cannot be definitively classified as benign or malignant may also be excised to ensure proper diagnosis and treatment.

2. Procedure

The procedure for excising a subfascial soft tissue tumor in the thigh or knee area involves several key steps:

  • Step 1: Preparation The patient is positioned appropriately, and the surgical site is prepared and draped in a sterile manner to minimize the risk of infection.
  • Step 2: Incision An incision is made over the tumor site. Depending on the tumor's location, a skin flap may be created and elevated to provide better access to the underlying tissue.
  • Step 3: Dissection The overlying tissue is carefully dissected to expose the soft tissue mass. This step requires precision to avoid damaging surrounding structures.
  • Step 4: Tumor Excision The tumor is excised along with a margin of healthy tissue to ensure complete removal. This margin is critical for reducing the risk of recurrence.
  • Step 5: Frozen Section (if applicable) A frozen section may be performed to assess the margins of the excised tumor, ensuring that no tumor cells remain. This step is reportable separately.
  • Step 6: Drain Placement If necessary, drains may be placed to prevent fluid accumulation in the surgical site.
  • Step 7: Closure The surgical wound is closed in layers, ensuring proper healing and minimizing scarring.

3. Post-Procedure

After the excision of the tumor, the patient will require monitoring for any signs of complications, such as infection or excessive bleeding. Pain management will be addressed, and the patient may be advised on activity restrictions to promote healing. Follow-up appointments will be necessary to assess the surgical site and to review pathology results if a frozen section was performed. The healthcare provider will provide specific instructions regarding wound care and any signs or symptoms that should prompt immediate medical attention.

Short Descr EXC THIGH/KNEE TUM DEEP <5CM
Medium Descr EXC TUMOR SOFT TISSUE THIGH/KNEE SUBFASC <5CM
Long Descr Excision, tumor, soft tissue of thigh or knee area, subfascial (eg, intramuscular); less than 5 cm
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) 1 - Statutory 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 Non office-based surgical procedure added in CY 2008 or later; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5B - Ambulatory procedures - musculoskeletal
MUE 3
CCS Clinical Classification 160 - Other therapeutic procedures on muscles and tendons
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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).
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, 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
CR Catastrophe/disaster related
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)
SG Ambulatory surgical center (asc) facility service
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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2010-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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