Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Repair, primary, torn ligament and/or capsule, knee; collateral

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27405 pertains to the primary repair of torn ligaments and/or the joint capsule in the knee, specifically focusing on the collateral ligaments. The knee joint is stabilized by four major ligaments: the anterior cruciate ligament (ACL), the posterior cruciate ligament (PCL), the medial collateral ligament (MCL), and the lateral collateral ligament (LCL). The ACL and PCL are located centrally within the knee joint and are crucial for providing rotational stability, while the MCL and LCL are positioned on the inner and outer aspects of the knee, respectively. Injuries to these ligaments can result in significant instability, with the knee potentially buckling under stress. In cases where the MCL or LCL is torn, surgical intervention may be necessary to restore stability. The procedure involves making a skin incision over the affected area of the knee, followed by dissection of the soft tissues to expose the damaged ligament. The torn ligament is then meticulously inspected and repaired using sutures, with the option of employing suture anchors to enhance the repair's strength. If the injury involves the ACL or PCL, the procedure requires incising the joint capsule to allow for a thorough inspection and repair of the affected ligament, along with any associated capsular tears. It is important to note that the codes associated with these procedures are strictly for primary repairs, and specific codes are designated for different types of ligament injuries, ensuring accurate coding and billing practices.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The primary repair of torn ligaments and/or the joint capsule in the knee, as described by CPT® Code 27405, is indicated for specific conditions related to ligament injuries. These indications include:

  • Torn Medial Collateral Ligament (MCL) - This condition occurs when the MCL, located on the inner aspect of the knee, is injured, leading to instability and pain.
  • Torn Lateral Collateral Ligament (LCL) - An injury to the LCL, situated on the outer aspect of the knee, can also result in knee instability and discomfort.
  • Joint Capsule Injury - Damage to the joint capsule, which may accompany ligament tears, necessitates surgical intervention to restore proper knee function.

2. Procedure

The procedure for the primary repair of torn ligaments and/or the joint capsule in the knee involves several critical steps, which are outlined as follows:

  • Step 1: Skin Incision - A skin incision is made over the region of the knee where the ligament injury has occurred. This incision allows access to the underlying structures and is carefully placed to minimize damage to surrounding tissues.
  • Step 2: Soft Tissue Dissection - Following the incision, the surgeon dissects the soft tissues to expose the involved ligament. This step is crucial for visualizing the extent of the injury and determining the appropriate repair technique.
  • Step 3: Inspection of the Ligament - If the procedure involves an isolated tear of the MCL or LCL, the surgeon inspects the affected ligament to assess the severity of the tear and the surrounding structures.
  • Step 4: Repair of the Torn Ligament - The torn ligament is repaired using sutures. In some cases, suture anchors may be utilized to provide additional support and stability to the repair, ensuring that the ligament heals properly.
  • Step 5: Joint Capsule Incision (if applicable) - If the ACL or PCL is involved, the joint capsule is incised to allow for a thorough inspection of the knee joint. This step is essential for identifying any additional injuries that may require attention.
  • Step 6: Repair of ACL or PCL - The affected cruciate ligament is then repaired with sutures, and any capsular tears are also addressed during this step to restore the integrity of the joint.

3. Post-Procedure

After the completion of the surgical procedure, post-operative care is essential for optimal recovery. Patients are typically monitored for any signs of complications, such as infection or excessive swelling. Rehabilitation protocols may be initiated, focusing on restoring range of motion and strengthening the knee. The expected recovery time can vary based on the extent of the injury and the specific ligaments involved, but adherence to post-operative instructions is crucial for a successful outcome. Follow-up appointments are necessary to assess healing and to determine when the patient can safely resume normal activities.

Short Descr REPAIR OF KNEE LIGAMENT
Medium Descr RPR PRIMARY TORN LIGM&/CAPSULE KNEE COLLATERAL
Long Descr Repair, primary, torn ligament and/or capsule, knee; collateral
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) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
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 151 - Excision of semilunar cartilage of knee
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).
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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
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
Date
Action
Notes
Pre-1990 Added Code added.
Code
Description
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"