M90.512

HCC Category Mapping

What This Code Means

Death of bone tissue in the left shoulder caused by another disease.

Coding Tips

• •This code requires documentation of the underlying etiology; code the primary disease separately
• •Confirm left shoulder is the affected side; do not assume laterality without explicit documentation

Clinical Significance

Secondary osteonecrosis of the left shoulder represents bone death in a major upper extremity joint caused by underlying disease, significantly impacting patient function and quality of life. This condition requires comprehensive management addressing both the causative disease and skeletal complications.

Documentation Requirements

• ✓Primary disease causing osteonecrosis clearly documented and coded first
• ✓Left shoulder specifically identified as the affected anatomical site
• ✓Clinical evidence supporting diagnosis of bone tissue death
• ✓Diagnostic imaging confirming presence of osteonecrosis
• ✓Assessment of shoulder function and range of motion
• ✓Comprehensive treatment plan addressing underlying disease and bone necrosis
• ✓Documentation of disease progression or staging

Commonly Confused Codes