Congruent Encounters Based on Charted Diagnosis, International Classification of Diseases, Tenth Revision (ICD10) Code, and Mandatory Indication. Congruence of charted diagnosis to ICD10 and mandatory indication among pre- and post-implementation groups. Congruence in pre-implementation group reflects congruence between ICD10 code and charted diagnosis. Congruence in the post-implementation group reflects congruence between ICD10 code and mandatory antibiotic electronic order indication. GAS, group A streptococcus pharyngitis, AOM, acute otitis media, SSTI, skin and soft tissue infection, UTI, urinary tract infection, PNA, pneumonia. Other = diagnoses with <10 encounters in the pre-implementation group.