Osteitis deformans in neoplastic diseases, unsp shoulder

This code signifies Paget's disease of bone occurring in the context of a neoplastic process, specifically affecting an unspecified shoulder. It describes a chronic bone disorder characterized by abnormal bone remodeling, leading to enlarged and weakened bones, when a co-existing malignancy is present.

Utilize this code when documentation clearly indicates a diagnosis of osteitis deformans (Paget's disease) in a patient who also has a neoplastic disease, and the affected anatomical site is the shoulder, without further specification of laterality. Supporting documentation should include diagnostic imaging (e.g., X-rays, bone scans) confirming Paget's disease and a confirmed diagnosis of a neoplastic condition.

• Ensure the documentation specifies the shoulder as the affected site; if another site is documented, a more specific code should be chosen.
• This code requires the co-existence of both Paget's disease and a neoplastic process; do not use if only one condition is present.
• Sequence the neoplastic disease code first if it is the primary reason for the encounter, followed by this code.