To cite package ‘icd.data’ in publications use:

Jack O. Wasey (2018). icd.data: International Classifcation of Diseases (ICD) Data. R package version 1.0, https://CRAN.R-project.org/package=icd.data.

Corresponding BibTeX entry:

  @Manual{,
    title = {icd.data: International Classifcation of Diseases (ICD)
      Data},
    author = {{Jack O. Wasey}},
    year = {2018},
    note = {R package version 1.0},
    url = {https://CRAN.R-project.org/package=icd.data},
  }