Acute on chr slipped upper femoral epiphy, unstbl, r hip

This code signifies an acute worsening of a pre-existing chronic slipped upper femoral epiphysis (SCFE) affecting the right hip, where the femoral head is unstable and not caused by trauma. This condition involves the growth plate (physis) of the femur, leading to displacement of the femoral head relative to the femoral neck.

Apply this code when documentation clearly indicates an acute exacerbation of a chronic, non-traumatic SCFE in the right hip, specifically noting instability. This typically occurs in adolescents during growth spurts, presenting with sudden onset of pain and limping in a patient with a history of chronic hip pain. Documentation should specify "acute on chronic" and "unstable."

• Differentiate from stable SCFE; instability is a key component for this specific code.
• Ensure laterality (right hip) is clearly documented.
• Verify the "acute on chronic" nature and non-traumatic origin; if traumatic, a different code would be appropriate.