2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Infectious And Parasitic Diseases 001-139 > Other Infectious And Parasitic Diseases 130-136 > 2008 ICD-9-CM Diagnosis 133 Acariasis  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 Therefore, this code may be out of date.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 133 can be accessed here. Infestations with arthropods of the subclass ACARI, superorder Acariformes. 133 is a non-specific code that cannot be used to specify a diagnosis ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog.