Osteonecrosis in diseases classd elswhr, right shoulder

This code signifies the death of bone tissue in the right shoulder due to an interruption of blood supply, occurring as a manifestation of another underlying disease process. This condition leads to bone collapse and subsequent joint destruction, often causing pain and limited range of motion.

Apply this code when documentation specifies osteonecrosis of the right shoulder and explicitly links it to an underlying systemic disease (e.g., lupus, sickle cell anemia, chronic corticosteroid use). The physician's notes should clearly state the affected side and the associated primary condition.

• Always sequence the underlying disease code first, as M90.511 is a manifestation code.
• Ensure laterality (right shoulder) is clearly documented; differentiate from left (M90.512) or unspecified (M90.519).
• Do not use this code for idiopathic osteonecrosis; refer to M87.- codes for primary osteonecrosis.