Osteonecrosis in diseases classd elswhr, unsp shoulder

This code signifies the death of bone tissue in an unspecified shoulder joint due to an underlying medical condition. This osteonecrosis is a secondary manifestation of another disease, rather than a primary idiopathic condition. It indicates a compromised blood supply to the bone, leading to its eventual collapse.

Use this code when documentation clearly states osteonecrosis of the shoulder, and explicitly links it to another systemic disease (e.g., lupus, sickle cell anemia, long-term corticosteroid use) that is classified elsewhere. This code is appropriate when the specific side (left or right) of the affected shoulder is not documented.

• Always sequence the underlying disease first, as this code represents a manifestation.
• Ensure documentation specifies "unspecified shoulder" or lacks laterality for accurate coding.
• Avoid using this code for idiopathic osteonecrosis; instead, refer to the M87 category for primary osteonecrosis.