Final answer:
Individually identifiable health information includes data that can identify a patient. Name and diagnosis, telephone number, and date of birth are all considered individually identifiable, whereas height and weight by themselves are not.
Step-by-step explanation:
Considering the situation described, individually identifiable health information refers to data that can potentially be used to identify a specific individual or patient. According to the U.S. Department of Health and Human Services (HHS), this includes a wide range of personal identifiers.
In the options provided, c. Name and diagnosis would be considered individually identifiable health information because both pieces of information combined can easily identify a patient. Likewise, a. Telephone number and d. Date of birth are also considered identifiable information because they can be used on their own to identify an individual. However, b. Height and weight, in isolation, are not typically considered individually identifiable unless they are combined with other personal identifiers.