M87.146

HCC Category Mapping

What This Code Means

Death of bone tissue in the fingers caused by medication side effects when the specific hand is not documented or cannot be determined.

Coding Tips

• •Use only when laterality is truly unspecified; attempt to clarify with provider documentation before defaulting to this code
• •Ensure the medication responsible for the osteonecrosis is documented in the patient's medication history

Clinical Significance

Drug-induced osteonecrosis of unspecified fingers represents medication-related bone death when the affected hand cannot be determined from documentation. This condition still requires specialized hand care and may significantly impact fine motor function regardless of laterality specification.

Documentation Requirements

• ✓Documentation confirming finger involvement in osteonecrosis
• ✓Specific causative medication or drug class identification
• ✓Imaging studies demonstrating finger bone necrosis
• ✓Functional assessment of fine motor skills and grip function
• ✓Explanation for why finger laterality cannot be determined
• ✓Drug exposure history with temporal relationship to symptoms
• ✓Treatment approach addressing functional preservation
• ✓Provider confirmation of drug-induced etiology

Commonly Confused Codes