Aneurysmal bone cyst, right shoulder

This code identifies a benign, lytic bone lesion characterized by blood-filled spaces, specifically located in the right shoulder region. It represents a non-neoplastic, expansile process that can cause pain, swelling, and pathological fractures. The condition typically affects children and young adults.

Apply this code when documentation confirms the diagnosis of an aneurysmal bone cyst affecting the right shoulder. This diagnosis is often established through imaging studies (X-ray, MRI) showing characteristic features and may be confirmed by biopsy. Use this code for initial diagnosis, follow-up, and treatment of this specific lesion.

• Ensure laterality is clearly documented as "right shoulder" to support this specific code.
• Differentiate from other benign bone tumors or cysts, such as unicameral bone cysts, which have distinct ICD-10-CM codes.
• If a pathological fracture is present due to the cyst, code the fracture first, followed by this code as an underlying cause.