ICD-10-CM > M00-M99 > M86-M90 > M88 > M88.8 > M88.81 M88.81 Osteitis deformans of shoulder Non-Billable/Non-Specific Codes M88.811Osteitis deformans of right shoulderM88.812Osteitis deformans of left shoulderM88.819Osteitis deformans of unspecified shoulder