2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Oral Cavity, Salivary Glands, And Jaws 520-529 > Other Diseases And Conditions Of The Teeth And Supporting Structures 525.* > 2006 ICD-9-CM Diagnosis 525.21 Minimal atrophy of the mandible View the most recent version of ICD-9-CM 525.21 525.21 is a specific code that can be used to specify a diagnosis 525.21 contains 3 index entries View the ICD-9-CM Volume 1 525.* hierarchy  Index entries containing 525.21: Atrophy, atrophic alveolar process or ridge (edentulous) 525.20 mandible 525.20 minimal 525.21 edentulous alveolar ridge 525.20 mandible 525.20 minimal 525.21 Ridge, alveolus - see also condition edentulous atrophy 525.20 mandible 525.20 minimal 525.21