Osteitis deformans of skull

This code represents Paget's disease of bone specifically affecting the skull. It is a chronic bone disorder characterized by abnormal bone remodeling, leading to enlarged, misshapen, and weakened bone tissue in the cranial vault. This can result in symptoms such as headache, hearing loss, and neurological complications due to compression of cranial nerves.

Use this code when documentation explicitly states a diagnosis of Paget's disease (osteitis deformans) with specific involvement of the skull. Supporting documentation would include imaging reports (e.g., X-rays, CT scans, bone scans) confirming characteristic bone changes in the cranium, and physician notes detailing the diagnosis and affected site.

• Ensure the documentation clearly specifies skull involvement; do not assume if only "Paget's disease" is mentioned.
• Distinguish from other localized bone disorders or benign skull lesions.
• Consider sequencing with codes for associated symptoms or complications, such as hearing loss (H90.-) or specific neurological deficits, if documented as directly related.