Specifications Manual for Joint Commission National Quality Measures (v2021B2)
Posted: 9/29/2021
Home » Birthdate

Release Notes:
Data Element
Version 2021B2

Collected For: All Records
Definition:The month, day, and year the patient was born.


  • Patient's age (in years) is calculated by Admission Date minus Birthdate. The algorithm to calculate age must use the month and day portion of admission date and birthdate to yield the most accurate age.
  • For HBIPS discharge measures, i.e., HBIPS-1, 5, patient's age (in years) is calculated by Discharge Date minus Birthdate. For event measures, i.e., HBIPS-2, 3, patient's age at time of event (in years) is calculated by Event Date minus Birthdate. The algorithm to calculate age must use the month and day portion of birthdate, and discharge date or event, as appropriate to yield the most accurate age.
Question:What is the patient's date of birth?
Length:10 — MM-DD-YYYY (includes dashes)
Allowable Values:

MM = Month (01-12)
DD = Day (01-31)
YYYY = Year (1880-Current Year)
Notes for Abstraction:Because this data element is critical in determining the population for all measures, the abstractor should NOT assume that the claim information for the birthdate is correct. If the abstractor determines through chart review that the date is incorrect, she/he should correct and override the downloaded value. If the abstractor is unable to determine the correct birthdate through chart review, she/he should default to the date of birth on the claim information.
Suggested Data Sources:
  • Emergency department record
  • Face sheet
  • Registration form
  • UB-04
Additional Notes:
Guidelines for Abstraction:
Inclusion Exclusion
  • None
  • None

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Specifications Manual for Joint Commission National Quality Measures (v2021B2)
Discharges 10-1-21 through 12-31-21 (4Q21)


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