• Osteo-onychodysplasia, hereditary 756.89
  • Osteoarthritica spondylitis (spine) (see also Spondylosis) 721.90
  • Osteoarthritis (see also Osteoarthrosis) 715.9
  • Osteoarthropathy (see also Osteoarthrosis) 715.9
  • Osteoarthrosis (degenerative) (hypertrophic) (rheumatoid) 715.9
  • Osteoblastoma (M9200/0) - see Neoplasm, bone, benign
  • Osteochondritis (see also Osteochondrosis) 732.9
  • Osteochondrodermodysplasia 756.59
  • Osteochondrodystrophy 277.5
  • Osteochondrolysis 732.7
  • Osteochondroma (M9210/0) - see also Neoplasm, bone, benign
  • Osteochondromatosis (M9210/1) 238.0
  • Osteochondromyxosarcoma (M9180/3) - see Neoplasm, bone, malignant
  • Osteochondropathy NEC 732.9
  • Osteochondrosarcoma (M9180/3) - see Neoplasm, bone, malignant
  • Osteochondrosis 732.9
  • Osteoclastoma (M9250/1) 238.0
  • Osteocopic pain 733.90
  • Osteodynia 733.90
  • Osteodystrophy
  • Osteofibroma (M9262/0) - see Neoplasm, bone, benign
  • Osteofibrosarcoma (M9182/3) - see Neoplasm, bone, malignant