ICD-10-CM > M00-M99 > M15-M19 > M19 > M19.2 > M19.21 M19.21 Secondary osteoarthritis, shoulder Non-Billable/Non-Specific Codes M19.211Secondary osteoarthritis, right shoulderM19.212Secondary osteoarthritis, left shoulderM19.219Secondary osteoarthritis, unspecified shoulder