ludic 
Overview
ludic is a package which performs probabilistic record linkage methods
that relies on the use of diagnosis codes only, in the absence of direct
identifiers. On top of the CRAN help
files, the following article
explains what ludic is about:
Hejblum BP, Weber G, Liao KP, Palmer N, Churchill S, Szolovits P, Murphy S, Kohane I, Cai T (2019). Probabilistic Record Linkage of De-Identified Research Datasets Using Diagnosis Codes. Scientific Data, 6:180298. <doi: 10.1038/sdata.2018.298>.
Installation
The easiest way to get ludic is to install it from
CRAN:
install.packages("ludic")or alternatively you can get the development version from GitHub:
#install.packages("devtools")
devtools::install_github("borishejblum/ludic")– Boris Hejblum