M93.001 Unspecified slipped upper femoral epiphysis (nontraumatic), right hip

Name of the Condition

• Unspecified slipped upper femoral epiphysis (nontraumatic), right hip

Summary

Slipped upper femoral epiphysis (SUFE) is a condition where the femoral head (ball of the hip joint) shifts relative to the femoral neck due to a fracture through the growth plate. This nontraumatic displacement typically occurs in adolescents during periods of rapid growth. The right hip is specifically affected in this case, and the condition is unspecified, meaning details about the severity or chronicity are not provided.

Causes

The exact cause of SUFE is not fully understood, but it is thought to involve mechanical stress on the growth plate combined with hormonal changes during puberty. Reduced bone density or structural weakness in the growth plate may contribute. Nontraumatic cases are not linked to acute injury but may result from cumulative stress over time.

Risk Factors

• Age (typically adolescents, especially 10–16 years)
• Male gender (higher prevalence)
• Obesity or rapid weight gain
• Endocrine disorders (e.g., hypothyroidism, growth hormone abnormalities)
• Prior SUFE in the contralateral hip

Symptoms

• Hip or knee pain (referred pain is common)
• Limp or altered gait
• Limited range of motion in the hip, especially internal rotation
• Mild swelling or tenderness in the hip or groin area
• Inability to bear weight on the affected leg

Diagnosis

Diagnosis involves a physical examination to assess hip mobility, pain, and gait. Imaging is critical: X-rays of the pelvis and hips (AP and frog-leg views) confirm the displacement. MRI may be used if early or subtle cases are suspected. Clinical history, including growth patterns and symptoms, supports the diagnosis.

Treatment Options

• Surgical stabilization: Pinning the femoral head to the neck is the standard treatment to prevent further slippage.
• Activity restriction: Weight-bearing limitations until stabilization is achieved.
• Monitoring: Regular follow-up imaging to assess healing and detect complications.
• Physical therapy: Post-surgical rehabilitation to restore strength and mobility.

Prognosis and Follow-Up

With timely surgical intervention, most patients recover well and avoid long-term disability. Follow-up includes periodic imaging to check for avascular necrosis (bone death) or chondrolysis (cartilage damage). Chronic cases may require ongoing monitoring for hip joint degeneration.

Complications

• Avascular necrosis of the femoral head
• Chondrolysis (cartilage loss)
• Premature osteoarthritis of the hip
• Gait abnormalities or leg-length discrepancy

Lifestyle & Prevention

• Maintain a healthy weight to reduce hip stress.
• Avoid high-impact activities until cleared by a provider.
• Monitor growth-related changes in adolescents with risk factors.
• Early evaluation for hip pain in at-risk individuals.

When to Seek Professional Help

Seek care if hip or knee pain persists, especially with a limp, limited mobility, or inability to bear weight. Prompt evaluation is critical to prevent progression and complications.

Tips for Medical Coders

Document the affected side (right hip) and specify "nontraumatic" to distinguish from traumatic cases. Include details on severity (e.g., acute vs. chronic) if available, as this may impact coding specificity. Ensure clinical notes align with the diagnosis to support accurate code assignment.