To cite package ‘icdpicr2’ in publications use:

  Clark D, Black A (2026). _icdpicr2: Categorize Injury Diagnosis
  Codes_. R package version 2.1.1,
  <https://github.com/clark-david/icdpicr2>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {icdpicr2: Categorize Injury Diagnosis Codes},
    author = {David Clark and Adam Black},
    year = {2026},
    note = {R package version 2.1.1},
    url = {https://github.com/clark-david/icdpicr2},
  }