2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Musculoskeletal System And Connective Tissue 710-739 > Osteopathies, Chondropathies, And Acquired Musculoskeletal Deformities 730-739 > Other Disorders Of Bone And Cartilage 733.* > 2008 ICD-9-CM Diagnosis 733.22 Aneurysmal bone cyst  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 733.22 can be accessed here. Solitary lesions of bone that typically cause a bulging of the overlying cortex bearing some resemblance to the saccular protrusion of the aortic wall in aortic aneurysm, hence the name. (Dorland, 27th ed) 733.22 is a specific code that can be used to specify a diagnosis 733.22 contains 1 index entry View the ICD-9-CM Volume 1 733.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 733.22: Cyst (mucus) (retention) (serous) (simple) bone (local) 733.20 aneurysmal 733.22