Search criteria for defining ASD in the EHR. ICD-9 code 299.0/ICD-10 code F84.0 (autism); ICD-9 code 299.00 (autistic disorder, current or active state); ICD-9 code 299.01 (autistic disorder, residual state); ICD-9 code 299 (pervasive developmental disorders); ICD-9 code 299.8/ICD-10 code F84.8 (other pervasive developmental disorders); ICD-9 code 299.80 (other specified pervasive developmental disorder, current or active state); ICD-9 code 299.81 (other specified pervasive developmental disorder, residual state); ICD-9 code 299.90/ICD-10 code F84.9 (Pervasive developmental disorder, unspecified); ICD-9 code 299.91 (unspecified pervasive developmental disorder, residual state); ICD-10 code F84.5 (Asperger’s Syndrome)