Accuracy of coding for possible warfarin complications in hospital discharge abstracts
Figure 8 Mean Inpatient Days, by Sex for Disabled Dually and Non-Dually Eligible Medicare Beneficiaries: California, 2001 Dually Eligible Non-Dually Eligible Beneficiaries Beneficiaries Female 1,929 1,218 Male 1,857 1,199 SOURCES: Centers for Medicare & Medicaid Services: Data from the Denominator File and Enrollment Database, 2001 and the California Office of Statewide Health Planning and Development Patient Discharge Abstract
We also used hospital discharge abstracts
to calculate the proportion of each physician's discharges for which the principal payer was Medicaid.
The PPC System has the limitations inherent in any system that uses discharge abstract
codes, since the accuracy and completeness of coding can vary across hospitals, and may vary from one diagnosis to another within a hospital (Iezzoni, 1997).
For California we obtained the raw discharge abstract
and birth certificate files and excluded records indicating out-of-State residency, multiple gestation, birthweight under 500 grams, delivery at home or in a hospital with less than 10 deliveries annually, unknown payer, mother's age under 14 years or over 42 years or fetal death (ICD-9-CM code 656.
The objectives of this study were to (1) perform a systematic review of hospital-based studies to identify validated ICD-9-, ICD-9-CM-, or ICD-10based AMI case definitions; (2) identify what case definitions have been used in the literature; (3) validate previously validated case definitions in dually coded ICD-9-CM and ICD-10 data through medical chart review; and (4) apply validated AMI case definitions to Canadian hospital discharge abstract
data to assess the impact of various case definitions on estimates of AMI admissions and in-hospital mortality.
Hospital discharge abstract
data for 1985 were obtained from each participating hospital.
Recoded ICD-9-CM Hospital Discharge Abstract
Data (Simulating Real- World Coding)
One year of case-level patient data from discharge abstracts
was collected from each hospital.
c) Modified Charlson comorbidity indices developed by mapping Clinical Classifications Software (CCS) diagnosis and procedure groups available on each HCUP discharge abstract
into Charlson index groups.
Researchers wishing to conduct analysis on large samples of hospitals have turned to less expensive and more readily available administrative data, primarily patient discharge abstracts
, to construct measures of hospital quality (Agency for Healthcare Research and Quality 2000; Ball et al.
The data are from hospital-submitted discharge abstracts
, avoiding the inconsistent reporting of claims by HMOs.