Allergy Delabeling in Antibiotic Stewardship - Intervention

Inclusion Criteria: * all patients with a hematologic malignancy (including Hodgkin and non-Hodgkin lymphoma, leukemia, and myeloma) admitted to an inpatient oncology service * reported history of a beta-lactam (BL) allergy (i.e., penicillin, cephalosporin, and/or carbapenem) Exclusion Criteria: * patients with a history of severe cutaneous adverse reaction * patients with a history of Stevens-Johnson syndrome * patients with a history of toxic epidermal necrolysis * patients with a history of drug-induced exfoliative dermatitis * patients with a history of drug reaction with eosinophilia and systemic symptoms * patients with a history of acute generalized exanthematous pustulosis