ACS Condition	Hospitalizationsa by ICD-9-CM Codes (OSHPD Principal Diagnosis)	Disease Prevalence (CHIS Self-Report)
Congestive heart failure (PQI #8)	428, 402.01, 402.11, 402.91, 518.4 Age groups: 18-64, 65-74, and ≥75 y	Adults who reported ever having been diagnosed with congestive heart failure by a doctor.
Hypertension (PQI #7)	401.0, 401.9, 402.00, 402.1, 402.9 Age groups: 18-44, 45-64, 65-74, and ≥75 y	Adults who reported ever having been diagnosed with high blood pressure or hypertension by a doctor.

Abbreviations: OSHPD, Office of Statewide Health Planning and Development; CHIS, California Health Interview Survey; ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification.

^a California hospitals include general acute care hospitals, acute psychiatric hospitals, chemical dependency recovery hospitals, and psychiatric health facilities. Excludes transfer from a hospital (different facility), a skilled nursing facility or intermediate care facility, or another health care facility; and MDC 14 (pregnancy). Only 1 hospital record was used for patients who had multiple hospital admissions for the same principle diagnosis per year.