Osteitis deformans of vertebrae

This code describes Paget's disease specifically affecting the vertebral column. It is a chronic bone disorder characterized by excessive bone breakdown and disorganized new bone formation, leading to enlarged, misshapen, and weakened vertebrae. This can result in vertebral compression fractures, spinal stenosis, and neurological deficits.

Assign this code when documentation explicitly states a diagnosis of Paget's disease (osteitis deformans) localized to the vertebrae. This diagnosis is typically supported by imaging studies (X-rays, bone scans) showing characteristic bone changes, elevated alkaline phosphatase levels, and clinical symptoms such as back pain or neurological compromise.

• Ensure the documentation specifies vertebral involvement; if the disease is generalized or affects other sites, a more specific code for Paget's disease of other sites or multiple sites should be used.
• Code any associated complications, such as pathological fractures (M84.58-) or spinal stenosis (M48.06, M48.07), in addition to the primary diagnosis.
• Do not confuse with other forms of osteitis or osteomyelitis; this code is specific to Paget's disease.