Q65.00 Congenital dislocation of unspecified hip, unilateral

Name of the Condition

• Congenital Dislocation of Unspecified Hip, Unilateral

Summary

Congenital dislocation of the hip, unilateral, refers to a condition present at birth where the femoral head is not properly seated within the acetabulum of one hip joint. This can lead to joint instability and potential long-term functional impairment if not addressed early.

Causes

The exact cause of this condition is not fully understood, but it is thought to involve a combination of genetic predisposition and intrauterine factors, such as abnormal fetal positioning or limited space in the womb.

Risk Factors

• Female gender
• Breech birth position
• Family history of hip dysplasia
• Firstborn status
• Oligohydramnios (low amniotic fluid)

Symptoms

• Asymmetrical skin folds around the thigh or buttock
• Limited range of motion in the affected hip
• Leg length discrepancy
• Clicking or popping sensation during hip movement
• Limp or altered gait in older infants

Diagnosis

Diagnosis typically involves a physical examination using maneuvers like the Barlow or Ortolani test to assess hip stability. Imaging studies, such as ultrasound or X-rays, may be used to confirm the dislocation and evaluate joint alignment.

Treatment Options

• Pavlik harness for infants to maintain hip positioning
• Closed reduction (manual realignment) under anesthesia
• Surgical intervention (e.g., open reduction) for severe or persistent cases
• Post-treatment monitoring with imaging to ensure proper healing

Prognosis and Follow-Up

With early diagnosis and appropriate treatment, most children achieve normal hip function. Long-term follow-up is necessary to monitor for recurrence or late complications, such as avascular necrosis or degenerative joint disease.

Complications

• Avascular necrosis of the femoral head
• Chronic hip instability
• Development of arthritis in adulthood
• Persistent leg length discrepancy

Lifestyle & Prevention

• Routine newborn hip screening during pediatric visits
• Avoiding restrictive swaddling that limits hip movement
• Maintaining a healthy pregnancy to reduce intrauterine risk factors

When to Seek Professional Help

Seek medical evaluation if you observe asymmetry in hip movement, uneven skin folds, or a limp in an infant. Early intervention improves outcomes.

Tips for Medical Coders

Document the laterality (unilateral) and specify that the hip dislocation is congenital and unspecified. Ensure clinical notes support the absence of additional details (e.g., partial dislocation or subluxation) to justify the code selection.