NCIt Code of Subset Subset Preferred Term NCIt Code NCIt Preferred Term NCIt Definition INC Preferred Term INC Synonym INC Definition C162989 INC Demographic and Maternal Terminology C93517 Birth Order Indicates the sequence of a biologic entity's birth in the family group. Birth Order from Multiple Birth Indicates the sequence of birth of fetuses in a single pregnancy. C162989 INC Demographic and Maternal Terminology C81296 Birth Time The hour, minute, and/or second at which birth occurs. Birth Time The hour, minute, and/or second at which the whole baby is delivered. C162989 INC Demographic and Maternal Terminology C25150 Age How long something has existed; elapsed time since birth. Chronological Age Time elapsed after birth. C162989 INC Demographic and Maternal Terminology C114089 Corrected Age Chronological age reduced by the number of weeks born before 40 weeks of gestation; most appropriately used to describe children up to 3 years of age who were born preterm. Corrected Age Chronological age reduced by the number of weeks born before 40 weeks of gestation. C162989 INC Demographic and Maternal Terminology C68615 Birth Date The calendar date on which a person was born. Date of Birth The calendar date on which the whole baby is delivered. C162989 INC Demographic and Maternal Terminology C162990 Date of Neonatal Intensive Care Unit Admission Date of admission to a neonatal intensive care unit. Date of Neonatal Intensive Care Unit Admission Date of admission to a neonatal intensive care unit. C162989 INC Demographic and Maternal Terminology C101221 Birth Head Circumference The measurement around a neonate's head at birth. Head Circumference at Birth The occipitofrontal circumference of a neonate's head at birth. Measurement to the nearest 0.1 cm should be taken at the broadest part of the forehead above the eyebrow and above the ears, most prominent part of the back of the head on the day of birth or the day after birth. C162989 INC Demographic and Maternal Terminology C106551 Number of Pregnancies A measurement of the total number of pregnancy events experienced by the female subject. Maternal Gravity A measurement of the total number of pregnancy events experienced by the female subject. C162989 INC Demographic and Maternal Terminology C16955 Parity The number of pregnancies reaching 20 weeks and 0 days of gestation or beyond, regardless of the number of fetuses or outcomes. Maternal Parity The number of pregnancies reaching 20 weeks and 0 days of gestation or beyond, regardless of the number of fetuses or outcomes. C162989 INC Demographic and Maternal Terminology C81271 Multiple Birth Multiple fetuses birthed live or dead in a single pregnancy regardless of gestational age, and regardless of whether the fetuses were birthed on different dates. Multiple Birth Multiple fetuses birthed live or dead in a single pregnancy regardless of gestational age, and regardless of whether the fetuses were birthed on different dates. C162989 INC Demographic and Maternal Terminology C114090 Postmenstrual Age Best estimate of the first day of last menstrual period to birth plus time elapsed from day of birth. Postmenstrual Age Best estimate of the first day of last menstrual period to birth plus time elapsed from day of birth.