M91.40
Coxa magna, unspecified hip
Clinical Classification Guidelines
Medical Intelligence & Overview
Coxa magna, classified under ICD-10 code M91.40, refers to an abnormal enlargement of the hip joint often caused by underlying conditions affecting the hip growth or development. It typically involves an increase in the size of the femoral head or acetabulum, which can lead to joint dysfunction and discomfort. While sometimes associated with specific disorders, the term 'unspecified' indicates that the precise cause or type has not been clearly diagnosed or classified in this particular case.
Causes & Symptoms
Clinical Causes: Developmental hip dysplasia leading to abnormal joint growth Previous hip infections causing joint damage and enlargement Trauma or injury resulting in joint swelling or deformity Presence of tumors or cysts affecting the hip joint Congenital or hereditary conditions impacting cartilage or bone growth Osteoarthritis leading to joint enlargement due to cartilage and bone changes
Key Symptoms: Pain or discomfort in the hip region Limited range of motion or stiffness in the hip joint Visible swelling or enlargement around the hip Difficulty walking or limping Tenderness when touching the affected area Feeling of instability or weakness in the hip
Diagnostic & Treatment
Diagnosis Path: Physical assessment to evaluate joint size, stability, and range of motion X-rays to assess the size and shape of the femoral head and acetabulum Magnetic Resonance Imaging (MRI) for detailed view of soft tissues and cartilage CT scans in some cases for intricate bone structure analysis Laboratory tests if infection or inflammatory causes are suspected
Treatment Protocols: Physical therapy to improve joint mobility and strengthen surrounding muscles Medications such as pain relievers or anti-inflammatory drugs for symptom relief Activity modifications to reduce stress on the hip joint Bracing or supportive devices in certain cases to stabilize the joint Surgical interventions, like joint debridement or hip replacement, in advanced cases Addressing underlying causes such as infection or developmental abnormalities
Clinical Advice & FAQs
Billing Guidance
Is M91.40 a billable ICD-10 code?
Yes, M91.40 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M91.40?
Clinical documentation must specify the nature of Coxa magna, unspecified hip and any associated comorbidities for accurate reporting.
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