icd 10 code for posterolateral corner injury

Do I need to code posterolateral corner injuries?

Answer: Yes. Posterolateral corner injuries include tears of the popliteus tendon, lateral collateral ligament, lateral capsular ligament and arcuate ligament complex. The codes you report will depend on the structures that the orthopedist repairs, so you should review the orthopedist's operative note in great detail.

What is an unstable posterolateral corner injury?

An unstable posterolateral corner injury is present in up to 60% of patients with posterior cruciate ligament rupture . Trauma to the anteromedial tibia while in extension is a frequent cause of this type of injury by producing varus stress. Patients often present with symptoms due to associated cruciate ligament injury or peroneal nerve damage.

What is the epidemiology of posterolateral corner (PLC) injury?

Epidemiology. Posterolateral corner (PLC) injury is thought to account for approximately 16% of acute injuries of the knee 4,5. It is often seen in sports-related injuries and mostly related to direct anteromedial tibial impact trauma, but is also caused by hyperextension and external rotation injuries, non-contact varus stress injuries,...

What are the components of the posterolateral corner?

Components of the posterolateral corner that with some variability may be identified on MRI are: popliteofibular ligament: usually injured from fibular styloid attachment- mermaid sign. fibular collateral ligament. popliteus tendon: most commonly injured at its musculotendinous junction.

When will the ICD-10-CM S83.521A be released?

The 2022 edition of ICD-10-CM S83.521A became effective on October 1, 2021.

What is the secondary code for Chapter 20?

Use secondary code (s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code. Type 1 Excludes.

Coding Guidelines

The appropriate 7th character is to be added to each code from block Other and unspecified injuries of lower leg (S89). Use the following options for the aplicable episode of care:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert S89.90XA to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code S89.90XA its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients

Your legs are made up of bones, blood vessels, muscles, and other connective tissue. They are important for motion and standing. Playing sports, running, falling, or having an accident can damage your legs. Common leg injuries include sprains and strains, joint dislocations, and fractures (broken bones).

When will the ICD-10-CM S83.421A be released?

The 2022 edition of ICD-10-CM S83.421A became effective on October 1, 2021.

What is the secondary code for Chapter 20?

Use secondary code (s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code. Type 1 Excludes.

Which structure provides stability to the posterolateral knee?

Structures that provide dynamic stability to the posterolateral knee include the iliotibial band, long and short heads of the biceps femoris muscle, and the lateral head of the gastrocnemius muscle.

What muscle is involved in the posterolateral knee?

The popliteus muscle complex is also integral to providing static stability to the posterolateral knee. It originates on the femur at the popliteal sulcus 18.5 mm anterior to FCL attachment on average and continues distally to attach to posteromedial edge of the middle to distal posterior tibia, where the insertion is covered by the semimembranosus muscle complex 8,11. It functions to internally rotate the tibia on the femur and unlock the knee during the initiation of flexion. It gives off several structures throughout its course that assist in posterolateral knee stability summarized below:

Where is the fibular collateral ligament located?

The fibular collateral ligament (FCL) originates from the femur 1.4 mm proximal and 3.1 mm posterior to the lateral epicondyle and attaches slightly anterior to the midportion of lateral aspect of the fibular head 11. The FCL is located deep to the superficial IT band and long head of biceps femoris. The FCL is the primary static stabilizer to varus opening at the knee 8. Biomechanical studies have shown that there is no statistically significant increase in varus opening of the knee until the FCL is cut—even if all other ligaments have been cut 8.

What is PLC knee injury?

These injuries are notoriously difficult to diagnose, treat and understand due to the complex anatomy comprising the posterior lateral corner (PLC) of the knee. PLC injuries comprise approximately 16 % of ligamentous knee injuries 3. Nearly 75% of PLC injuries are identified with concurrent damage to either the anterior (ACL) or posterior cruciate ligament (PCL) 4. The posterior cruciate ligament is more commonly damaged than the ACL in PLC injuries, as the PCL and popliteus tendon are anatomically parallel, and thus forces that will cause a PCL injury may also lead to PLC injuries 2. PLC injuries are important to diagnose, as a missed diagnosis is a common cause of cruciate ligament reconstruction failure 1. Further, the operative results of PLC injuries that are repaired in the acute phase of healing are superior to chronic reconstructions 5,6.

Which ligament attaches the posterior horn of the lateral meniscus to the tibia?

Lastly, the coronary ligament is the meniscotibial portion of the posterior joint capsule that attaches the posterior horn of the lateral meniscus to the tibia 8. It provides resistance to hyperextension and posterolateral rotation of the knee 8.

Can PLC injuries cause knee pain?

Patients with isolated or combined PLC injuries may complain of pain over the posterolateral aspect of the knee, varus instability with normal walking, twisting, cutting, pivoting, and turning when climbing stairs, which may or may not be accompanied with swelling 13. LaPrade reports from his experience that patients with isolated PLC injuries do not complain of instability going down stairs or hills, but patients with concurrent PCL tears do 13.

What is the posterolateral corner of the knee?

Posterolateral corner injury of the knee can occur in isolation or with other internal derangements of the knee, particularly cruciate ligament injuries. The importance of injuries to the posterolateral ligamentous complex lies in the possible long-term joint instability and cruciate graft failure if these are not identified and treated.

Which structures are part of the posterolateral ligamentous complex?

Other structures stated to be in the posterolateral ligamentous complex include the short and long heads tendons of the biceps femoris muscle, arcuate ligament, meniscopopliteal fascicles, and fabellofibular ligament.

What is a PLC injury?

Posterolateral corner (PLC) injury is thought to account for approximately 16% of acute injuries of the knee 4,5. It is often seen in sports-related injuries and mostly related to direct anteromedial tibial impact trauma, but is also caused by hyperextension and external rotation injuries, non-contact varus stress injuries, and anterior or posterior dislocations of the knee. An unstable posterolateral corner injury is present in up to 60% of patients with posterior cruciate ligament rupture .

What is a PMC injury?

A posteromedial corner (PMC) injury is a traumatic knee injury that usually presents as a component of a multi-ligamentous knee injury and can can lead to chronic valgus knee instability.

What percentage of knee injuries are associated with PMC?

Associated conditions. high prevalence of associated knee injuries (88%) PMC injuries are most commonly found in association with other ligamentous knee injuries. almost all patients surgically treated for combined ACL and MCL injuries have POL tears or complete PMC ruptures.

What is anteromedial rotatory instability?

anteromedial rotatory instability (AMRI) results from an injury that includes both the medial collateral ligament (MCL) and the posterior oblique ligament (POL). pathoanatomy. POL is the most commonly injured structure.

What is the most commonly injured structure?

POL is the most commonly injured structure. may include sprains, partial tears, and complete tears and are best visualized on axial and coronal MR images. 3 major injury patterns reported. POL injury and associated injury to the capsular arm of the semimembranosus.

Where is the reconstruction tunnel for the central arm of the POL?

next, a reconstruction tunnel for the central arm of the POL is then placed just anterior to the direct arm attachment of the semimembranosus tendon.

Can a valgus force cause an MCL injury?

patients will typically describe a valgus force to the affected knee, most commonly occurring during athletic activity. a pure valgus force often causes an isolated MCL injury. combined external rotation and valgus forces are likely to result in injury to the POL and other components of the PMC.