The data element I10_BIRTH identifies whether a diagnosis indicating the birth of a newborn is reported on the discharge record. Evidence of a birth is based on all ICD-10-CM diagnosis codes that begin with Z38 indicating liveborn infants according to place of birth and type of delivery. Single, twin, and multiple infants born in the hospital, born outside the hospital, and those with an unspecified place of birth are included.

For data year 2018, there was no indicator on the HCUP data files that identifies deliveries, births, and neonatal and/or maternal diagnoses and procedures.

From quarter four of 2015 through 2017, the data element I10_NEOMAT was used to identify discharges with neonatal and/or maternal diagnoses and procedures. The information on coding is available in the report on HCUP Quality Control Procedures posted on all HCUP database documentation web pages.

For data prior to the fourth quarter of 2015, the neonatal and/or maternal diagnosis and/or procedure codes are stored in the data element NEOMAT to indicate the use of the ICD-9-CM coding system.