Feedback & Technical Problems

To comment or provide feedback on the online OIICS Coding Trees or the downloadable OIICS application send an e-mail to Suzanne Marsh.

Specific questions on OIICS coding issues, rules, and suggested corrections or revisions should be submitted via e-mail to

Page last reviewed: September 23, 2019
Content source: National Institute for Occupational Safety and Health (NIOSH) Division of Safety Research