ICD-10-CM > M00-M99 > M86-M90 > M90 > M90.5 > M90.54 M90.54 Osteonecrosis in diseases classified elsewhere, hand Non-Billable/Non-Specific Codes M90.541Osteonecrosis in diseases classified elsewhere, right handM90.542Osteonecrosis in diseases classified elsewhere, left handM90.549Osteonecrosis in diseases classified elsewhere, unspecified hand