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Official Description

Tenolysis, flexor, foot; single tendon

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Tenolysis is a surgical procedure aimed at freeing a tendon from the surrounding tissue that may be restricting its movement. Specifically, CPT® Code 28220 refers to the tenolysis of a single flexor tendon in the foot. This procedure is typically indicated when scar tissue has formed around the tendon due to trauma or a disease process, which can impede the normal motion of the foot and toes. The goal of the procedure is to restore mobility by carefully releasing the adhesions that have developed around the tendon. During the operation, a surgical incision is made directly over the affected tendon, allowing the surgeon to access the area. The surrounding soft tissues are meticulously dissected to expose the tendon, which is then identified. Once located, the surgeon will sever the adhesions that are binding the tendon, thereby restoring its function. After the tenolysis is completed, the range of motion of the tendon is evaluated to ensure that the procedure has been successful. Finally, the surgical wound is closed in layers, and a dressing is applied to protect the area as it heals. This procedure is crucial for patients who have experienced limited mobility due to tendon adhesions, and it is important to note that a similar procedure for multiple flexor tendons is coded under CPT® Code 28222.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 28220 is indicated for patients experiencing limitations in foot and/or toe motion due to the presence of scar tissue surrounding a flexor tendon. The following conditions may warrant the performance of tenolysis:

  • Scar Tissue Formation Scar tissue may develop as a result of trauma, surgery, or inflammatory conditions affecting the tendon, leading to restricted movement.
  • Post-Traumatic Adhesions Following an injury, adhesions can form around the tendon, causing pain and limiting the range of motion.
  • Chronic Tendonitis Inflammation of the tendon over time can result in the formation of adhesions that necessitate surgical intervention to restore function.

2. Procedure

The tenolysis procedure for a single flexor tendon in the foot, as described by CPT® Code 28220, involves several key steps:

  • Incision A surgical incision is made over the affected flexor tendon to provide access to the area requiring intervention. The location of the incision is critical to ensure optimal exposure of the tendon.
  • Dissection of Soft Tissues Once the incision is made, the surrounding soft tissues are carefully dissected. This step is essential to expose the tendon while minimizing damage to adjacent structures.
  • Identification of the Affected Tendon The surgeon identifies the specific flexor tendon that is affected by adhesions. Accurate identification is crucial for the success of the procedure.
  • Severing of Adhesions After locating the tendon, the surgeon proceeds to sever the adhesions that are binding the tendon to surrounding tissues. This step is vital for restoring the tendon’s mobility.
  • Evaluation of Range of Motion Following the release of the adhesions, the surgeon evaluates the range of motion of the tendon to assess the effectiveness of the procedure and ensure that mobility has been restored.
  • Closure of the Surgical Wound Once the procedure is complete, the surgical wound is closed in layers to promote proper healing. This layered closure technique helps to reduce the risk of complications.
  • Application of Dressing Finally, a dressing is applied to the surgical site to protect it during the initial healing phase and to minimize the risk of infection.

3. Post-Procedure

After the tenolysis procedure, patients can expect a recovery period during which they may need to follow specific post-operative care instructions. This may include keeping the surgical site clean and dry, monitoring for signs of infection, and possibly engaging in physical therapy to regain strength and mobility in the affected foot and toes. The surgeon will provide guidance on when to resume normal activities and any restrictions that may be necessary during the healing process. Regular follow-up appointments may be scheduled to assess the recovery progress and ensure that the tendon is healing properly.

Short Descr RELEASE OF FOOT TENDON
Medium Descr TENOLYSIS FLEXOR FOOT SINGLE TENDON
Long Descr Tenolysis, flexor, foot; single tendon
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 Office-based surgical procedure added to ASC list in CY 2008 or later with MPFS nonfacility PE RVUs; payment based on MPFS nonfacility PE RVUs.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P6B - Minor procedures - musculoskeletal
MUE 1
CCS Clinical Classification 160 - Other therapeutic procedures on muscles and tendons
RT Right side (used to identify procedures performed on the right side of the body)
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).
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.
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)
SG Ambulatory surgical center (asc) facility service
T1 Left foot, second digit
T2 Left foot, third digit
T3 Left foot, fourth digit
T4 Left foot, fifth digit
T5 Right foot, great toe
T6 Right foot, second digit
T7 Right foot, third digit
T8 Right foot, fourth digit
T9 Right foot, fifth digit
TA Left foot, great toe
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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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