A classification of the observed sex of a PERSON, relating to the biological, physiological and physical characteristics that differentiate men and women, determined by endocrine influences.

PERSON PHENOTYPIC SEX is observed by a PERSON (such as a CARE PROFESSIONAL), and is not self-stated.

PERSON GENDER will be replaced with PERSON STATED GENDER or PERSON PHENOTYPIC SEX, which is the most recent approved national information standard to describe the required definition.