osteonecrosis avascular necrosis AVN ICD10:M87.0 ICD10:M87.1 ICD10:M87.2 ICD10:M87.3 ICD10:M87.8 ICD10:M87.9 MONDO:0018373 NCIT:C34841 Necrotic changes in the bone tissue due to interruption of blood supply. Most often affecting the epiphysis of the long bones, the necrotic changes result in the collapse and the destruction of the bone structure. Orphanet:399164 SCTID:397758007 avascular necrosis of bone