6. Incubation period--Incubations as short as 10 and 18 hours have been observed in volunteer studies and outbreaks, respectively. 7. Period of communicability--Duration of excretion of EIEC strains. 8. Susceptibility and resistance--Little is known about susceptibility and immunity to EIEC. 9...
(h) Encounters for testing for HIV If a patient is being seen to determine his/her HIV status, use code V73.89, Screening for other specified viral disease. Use code V69.8, Other problems related to lifestyle, as a secondary code if an asymptomatic patient is in a known high risk group...