M23.331
Other meniscus derangements, other medial meniscus, right knee
Clinical Classification Guidelines
Medical Intelligence & Overview
Meniscus derangement refers to an injury or abnormality involving the meniscus cartilage in the knee joint. Specifically, ICD-10 code M23.331 indicates a condition affecting the medial meniscus of the right knee. The menisci are two C-shaped pieces of cartilage that act as shock absorbers between the thigh bone (femur) and shinbone (tibia). When the meniscus becomes deranged, it can cause pain, swelling, and difficulty with movement, impacting daily activities and overall knee function.
Causes & Symptoms
Clinical Causes: Traumatic injury during sports or physical activity, especially twisting movements or sudden impacts Degenerative changes due to aging, leading to weakening of cartilage Repetitive stress on the knee joint from occupational activities or sports Previous knee injuries or surgeries that weaken meniscus integrity Sudden twisting or pivoting motions while bearing weight
Key Symptoms: Knee pain, especially along the inner (medial) side of the knee Swelling and stiffness in the affected knee Limited range of motion or difficulty fully straightening or bending the knee A sensation of locking or catching when moving the knee Instability or a feeling that the knee is giving way Tenderness upon touching the joint
Diagnostic & Treatment
Diagnosis Path: Diagnosis typically involves a combination of clinical evaluation and imaging tests. A healthcare professional will review the patient's medical history and examine the knee for signs of swelling, tenderness, and range of motion. Magnetic Resonance Imaging (MRI) is the most effective imaging modality to visualize soft tissue structures, including the menisci, and confirm the presence of derangement or tear.
Treatment Protocols: Rest and Activity Modification: Limiting activities that exacerbate symptoms to allow healing Ice Application: Applying ice packs to reduce swelling and pain Compression and Elevation: Using compression bandages and elevating the leg to minimize swelling Physical Therapy: Exercises to strengthen the muscles around the knee and improve stability Medications: Non-steroidal anti-inflammatory drugs (NSAIDs) to ease pain and inflammation Injections: Corticosteroid injections in some cases to reduce inflammation Surgical Intervention: Arthroscopic surgery may be recommended to repair or remove the damaged meniscus if symptoms persist or are severe
Clinical Advice & FAQs
Billing Guidance
Is M23.331 a billable ICD-10 code?
Yes, M23.331 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M23.331?
Clinical documentation must specify the nature of Other meniscus derangements, other medial meniscus, right knee and any associated comorbidities for accurate reporting.
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