Spanish to English Medical Medical (general) HISTOPATHOLOGY

I'm just looking for confirmation here: This is a Bolivian histopathological report from a private laboratory. There was a surgery in a hospital, and specimens were sent to Anatomic Pathology in the same hospital. But then the referring physician sent the specimens, in paraffin blocks, to this private laboratory as well. In the private laboratory's report heading, along with information on the patient and the referring physician, there is "FECHA I: and a date, and on the same line, "FECHA E" and another date, 16 days later. I am assuming the I and E stand for "INGRESO" and "EMISION", and refer to the dates the specimens were received and the report issued. Am I correct? Thanks very much!