M11.052 Hydroxyapatite deposition disease, left hip

Name of the Condition

• Hydroxyapatite deposition disease, left hip

Summary

Hydroxyapatite deposition disease (HADD) of the left hip is a condition characterized by the deposition of calcium phosphate crystals (hydroxyapatite) in soft tissues around the left hip joint, leading to inflammation and pain. It typically affects periarticular structures such as tendons, ligaments, or bursae and may present with acute symptoms. The condition can cause significant discomfort and functional impairment, though it often resolves spontaneously over time.

Causes

HADD is caused by the deposition of hydroxyapatite crystals in soft tissues around the left hip. The exact trigger for crystal formation is not fully understood, but it may occur spontaneously or in association with trauma, overuse, or metabolic conditions. The crystals can provoke an inflammatory response, contributing to symptoms.

Risk Factors

• Repetitive hip motion or overuse.
• Trauma to the left hip joint.
• Metabolic disorders (e.g., diabetes, hyperparathyroidism).
• Advanced age.
• Chronic kidney disease.

Symptoms

• Sudden, severe pain in the left hip.
• Swelling and tenderness around the left hip.
• Limited range of motion.
• Warmth or redness over the left hip.
• Pain that worsens with movement or weight-bearing.

Diagnosis

Diagnosis is based on clinical presentation, including sudden onset of pain and tenderness in the left hip. Imaging (e.g., X-rays, ultrasound) may show calcific deposits. Joint aspiration is rarely performed but can reveal crystal deposits if needed.

Treatment Options

• Rest and activity modification to reduce stress on the left hip.
• Nonsteroidal anti-inflammatory drugs (NSAIDs) to manage pain and inflammation.
• Physical therapy to improve range of motion and strength.
• Corticosteroid injections for severe or persistent symptoms.
• In rare cases, surgical intervention may be considered for calcific deposits causing chronic issues.

Prognosis and Follow-Up

Most cases of HADD resolve spontaneously within weeks to months with conservative management. Follow-up may involve monitoring symptoms and functional improvement. Recurrence is possible, especially with repeated trauma or underlying metabolic conditions.

Complications

• Chronic pain or stiffness in the left hip.
• Reduced mobility or functional impairment.
• Recurrent episodes of inflammation.
• Potential for calcific deposits to persist, requiring further intervention.

Lifestyle & Prevention

• Avoid repetitive or high-impact activities that stress the left hip.
• Maintain a healthy weight to reduce joint load.
• Manage underlying metabolic conditions (e.g., diabetes) to minimize risk.
• Use proper form during exercise or physical activities to prevent trauma.

When to Seek Professional Help

Seek medical attention if you experience sudden, severe pain in the left hip, swelling, or inability to bear weight. Persistent symptoms despite conservative measures or signs of infection (e.g., fever, redness) also warrant evaluation.

Tips for Medical Coders

Document the specific site (left hip) and clinical details supporting the diagnosis. Ensure the code M11.052 is used when the condition is localized to the left hip. Include any imaging or clinical findings that confirm hydroxyapatite deposition to support medical necessity.