Replication codes for the paper "Heatwaves and Hospitalization Risk Among US Medicare Beneficiaries: Cause-Specific, Spatial and Temporal Subgroup Analyses" by Falco J. Bargagli-Stoffi, Hannah Heiliger, Lauren Mock, Daniela Garcia, Nicole C. Deziel, Michelle L. Bell, Daniel Mork, Scott Delaney, and Danielle Braun.