Osteitis deformans in neoplastic diseases, right shoulder

This code signifies Paget's disease of bone (osteitis deformans) occurring as a manifestation or complication of a neoplastic process. Specifically, it identifies the involvement of the right shoulder. This condition involves abnormal bone remodeling, leading to weakened and enlarged bones.

Apply this code when documentation clearly links Paget's disease of the right shoulder to an underlying malignancy. This includes scenarios where the neoplasm is directly causing or contributing to the osteitis deformans, or when Paget's disease is a paraneoplastic syndrome. Supporting documentation should include pathology reports, imaging studies, and physician notes detailing both the neoplastic disease and the osteitis deformans.

• Always sequence the underlying neoplasm code first, followed by this code.
• Ensure documentation specifies "right shoulder" and the causal link to a neoplastic disease. Do not use for idiopathic Paget's disease.
• Differentiate from other bone metastases or primary bone tumors; this code is specific to osteitis deformans.