DHS 120.30(4)(a)9.9. Date of patient’s first symptom of current illness, injury or pregnancy. DHS 120.30(4)(b)(b) For information submitted by health care providers who are not hospitals or ambulatory surgery centers, patient-identifiable data means all of the following elements: DHS 120.30(4)(b)2.2. Whether the patient’s condition is related to employment, and the occurrence and place of an auto accident or other accident. DHS 120.30(4)(b)3.3. Date of first symptom of current illness, of current injury or of current pregnancy. DHS 120.30(4)(b)5.5. Dates that the patient has been unable to work in his or her current occupation. DHS 120.30(5)(5) Additional methods for ensuring confidentiality of data. DHS 120.30(5)(a)(a) In this subsection, “small number” means any number that is not large enough to be statistically significant, as determined by the department.