Deformity of unspecified orbit due to bone disease

This code signifies an abnormal shape or structure of the bony cavity surrounding the eye, specifically when the underlying cause is a disease affecting the bone itself. It indicates a structural alteration of the orbit, not due to trauma or congenital factors, but rather a pathological process within the bone.

Use this code when documentation clearly states a deformity of the orbit resulting from a bone disease, such as fibrous dysplasia, Paget's disease, or osteomyelitis, and the specific orbit (right or left) is not specified. This code is appropriate when the physician explicitly links the orbital deformity to a systemic or localized bone pathology.

• Ensure the documentation specifies "bone disease" as the etiology; avoid using for deformities due to trauma or congenital anomalies.
• Always attempt to query for laterality (right or left orbit) to use a more specific code if possible.
• Code the underlying bone disease first, followed by this code as a manifestation.