M90.541

HCC Category Mapping

What This Code Means

Death of bone tissue in the right hand caused by another disease or condition affecting the body.

Coding Tips

• •Hand includes carpal bones, metacarpals, and phalanges; document which specific bones are affected when possible
• •Always code the underlying disease first, then this manifestation code

Clinical Significance

This code represents secondary osteonecrosis specifically affecting the right hand, indicating bone death caused by an underlying classified disease. The condition requires ongoing medical management and significantly impacts risk adjustment modeling due to associated functional limitations and complex care needs.

Documentation Requirements

• ✓Identification of the underlying disease causing secondary osteonecrosis
• ✓Specific documentation of right hand as affected anatomical site
• ✓Radiological evidence of bone necrosis (MRI, bone scan, CT imaging)
• ✓Clinical correlation establishing disease-to-osteonecrosis relationship
• ✓Current treatment modalities and management approach
• ✓Functional assessment and impact on activities of daily living
• ✓Provider statement confirming secondary nature of osteonecrosis
• ✓Documentation excluding traumatic or primary causes

Commonly Confused Codes