M91.10
Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], unspecified leg
Clinical Classification Guidelines
Medical Intelligence & Overview
Juvenile osteochondrosis of the head of the femur, also known as Legg-Calvé-Perthes disease, is a childhood condition involving temporary loss of blood flow to the head of the thigh bone (femur). This interruption causes the bone to die and then slowly regenerate. The disease primarily affects children, especially boys aged 4 to 10, and typically influences one leg. Although the exact cause remains unknown, it can lead to varying degrees of hip joint deformity if not diagnosed and managed early. This explanation covers the basics of the condition, its causes, symptoms, how it's diagnosed, and common treatment approaches.
Causes & Symptoms
Clinical Causes: Unknown factors presumed to impair blood flow to the femoral head Genetic predispositions possibly increasing vulnerability Trauma or injury to the hip area Environmental factors such as exposure to certain toxins or infections
Key Symptoms: Limping or a noticeable or persistent limp when walking Hip, groin, thigh, or knee pain that may worsen with activity Limited range of motion in the hip joint Weakness in the affected leg Muscle spasms around the hip In some cases, shortening of the affected leg over time
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a medical history review, physical examination, and imaging tests. X-rays of the pelvis and hips are primary tools used to visualize the ossification and development of the femoral head. MRI or bone scans may be recommended to assess the extent of bone damage and blood supply to the femoral head. The doctor may also evaluate joint stability, muscle strength, and range of motion to determine the severity of the condition.
Treatment Protocols: Rest and activity limitations to reduce stress on the hip Use of pain relievers or anti-inflammatory medications Physical therapy to maintain joint mobility and muscle strength Orthopedic devices such as braces or splints to keep the femoral head within the hip socket Surgical intervention in severe cases, which may involve reshaping the femoral head or hip reconstruction Regular monitoring through imaging to observe changes in the femoral head
Clinical Advice & FAQs
Billing Guidance
Is M91.10 a billable ICD-10 code?
Yes, M91.10 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M91.10?
Clinical documentation must specify the nature of Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], unspecified leg and any associated comorbidities for accurate reporting.
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