M94.2
Chondromalacia
Clinical Classification Guidelines
Excludes Type 1
- chondromalacia patellae (M22.4)
Medical Intelligence & Overview
Chondromalacia refers to the softening and deterioration of the cartilage on the underside of the kneecap (patella). This condition can lead to knee pain, swelling, and difficulty moving the joint. It is often caused by overuse, injury, or structural abnormalities that put extra stress on the cartilage. While chondromalacia can affect people of all ages, it is particularly common among athletes and active individuals who perform frequent knee activities.
Causes & Symptoms
Clinical Causes: Repetitive knee bending and straightening activities, such as running, jumping, or squatting Trauma or injury to the kneecap, leading to cartilage damage Structural abnormalities in the leg, such as misalignment of the kneecap or uneven leg length Overuse or excessive physical activity without adequate rest Muscle imbalances around the knee, particularly weak quadriceps muscles Degenerative changes associated with aging Previous knee injuries or surgeries
Key Symptoms: A dull, aching pain in the front of the knee, especially around the kneecap Pain worsening with activities that strain the knee, such as climbing stairs, squatting, or kneeling A sensation of grinding or crepitus during knee movement Swelling or tenderness beneath the kneecap Visible or palpable roughness of the cartilage in advanced cases Limited range of motion or difficulty fully extending or bending the knee
Diagnostic & Treatment
Diagnosis Path: Diagnosis typically involves a combination of clinical evaluation and imaging studies. A healthcare provider will review the patient's medical history and symptoms, perform a physical examination focusing on knee movement and tenderness, and may order imaging tests such as MRI or X-rays. MRI scans are particularly useful for visualizing the cartilage and assessing the extent of the cartilage damage. In some cases, a diagnostic arthroscopy might be performed, offering a direct view inside the knee joint.
Treatment Protocols: Rest and activity modification to reduce stress on the knee Ice application to decrease swelling and pain Non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief Physical therapy focused on strengthening the quadriceps and hip muscles, as well as improving knee stability Use of orthotics or knee braces to support proper alignment Weight management to decrease load on the knee joint In some cases, corticosteroid injections may be administered for inflammation control Surgical intervention, such as cartilage smoothing or repair procedures, may be considered if conservative measures fail
Clinical Advice & FAQs
Billing Guidance
Is M94.2 a billable ICD-10 code?
Yes, M94.2 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M94.2?
Clinical documentation must specify the nature of Chondromalacia and any associated comorbidities for accurate reporting.
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