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2025 ICD-10-CM code M91.22

Coxa plana, left hip. This condition involves avascular necrosis of the femoral head, primarily affecting children and adolescents.

Use an external cause code (if applicable) following M91.22 to identify the cause of the condition.

Medical necessity is established by the presence of signs and symptoms of coxa plana, confirmed by imaging studies. Treatment aims to relieve pain, restore hip function, and prevent long-term complications.

Diagnosis involves physical examination, review of symptoms (dull aching pain in the hip, especially with pressure), and X-ray confirmation. Treatment typically includes rest, casting to restrict movement, and rarely, surgery to remove bone fragments.

In simple words: Coxa plana is a hip problem in kids and teens. It happens when part of the hip bone doesn't get enough blood, causing it to temporarily die and then regrow, sometimes with a different shape. This can cause pain and stiffness in the hip.

Coxa plana, also known as Legg-Calvé-Perthes disease, is a hip disorder that affects children and adolescents. It occurs when the blood supply to the femoral head (the ball-shaped part of the thighbone that fits into the hip socket) is temporarily interrupted. This interruption leads to avascular necrosis, or bone death, followed by regeneration and potential deformity.

Example 1: A 7-year-old boy presents with persistent hip pain and a limp. X-rays reveal avascular necrosis of the left femoral head, consistent with coxa plana., A 10-year-old girl experiences pain in her left hip after playing sports. After examination and imaging, she is diagnosed with coxa plana and treated with rest and casting., A teenager reports intermittent left hip pain and stiffness, worsening with activity. Diagnostic imaging reveals coxa plana, and conservative management is initiated.

Documentation should include patient history, physical exam findings, imaging results (X-rays), and treatment plan.

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