Missing definition for OGMS:0000098 'hospitalization'

Hello! My team is using OGMS:0000098 'hospitalization' in an NIH CDE project, and we need a definition for it (the definition is currently "TODO"). We'd like to propose defining it as "A health care process in which a person is admitted to a hospital for treatment." I'm happy to make a PR for this if OGMS is amenable.