Admissions for any-listed diagnosis of perforations or abscesses of the appendix per 1,000 admissions with any-listed appendicitis, ages 18 years and older. Excludes obstetric admissions and transfers from other institutions.
[NOTE: The software provides the rate per hospital admission. However, common practice reports the measure as per 1,000 admissions. The user must multiply the rate obtained from the software by 1,000 to report cases per 1,000 admissions.]
Measure Specs
General Information
Numerator
Discharges, among cases meeting the inclusion and exclusion rules for the denominator, with any-listed ICD-10-CM diagnosis codes for perforations or abscesses of appendix.
Denominator
Discharges, for patients ages 18 years and older, with any-listed ICD-10-CM diagnosis codes for appendicitis.Discharges are assigned to the denominator based on the metropolitan area† or county of the patient residence, not the metropolitan area or county of the hospital where the discharge occurred.
†The term “metropolitan area” (MA) was adopted by the U.S. Census in 1990 and referred collectively to metropolitan statistical areas (MSAs), consolidated metropolitan statistical areas (CMSAs), and primary metropolitan statistical areas (PMSAs). In addition, “area” could refer to either 1) FIPS county, 2) modified FIPS county, 3) 1999 OMB Metropolitan Statistical Area, or 4) 2003 OMB Metropolitan Statistical Area. Micropolitan Statistical Areas are not used in the QI software.
Exclusions
Exclude cases:
• transfer from a hospital (different facility)
• transfer from a Skilled Nursing Facility (SNF) or Intermediate Care Facility (ICF)
• transfer from another health care facility
• MDC 14 (pregnancy, childbirth, and puerperium)
• with missing gender (SEX=missing), age (AGE=missing), quarter (DQTR=missing), year (YEAR=missing), principal diagnosis (DX1=missing), or county (PSTCO=missing)
Measure Record
Point of Contact
The AHRQ QI software is publicly available; no copyright disclaimers
Public Comments