We used the Medicare claims records from the Medicare Provider Analysis and Review (MEDPAR) file to select only emergency admissions, and to identify previous cause of hospital admissions, based on primary and secondary diagnosis codes of all hospitalizations for any causes up to one year prior to the initial condition-specific hospitalization.
Percentage of patients hospitalized for stroke was identified based on ICD-9-CM (primary code indicative of ischemic and/or hemorrhagic stroke) and CPT/UB-92 (uniform billing) codes (indicative of hospitalization or outpatient visits) from medical claims.
Adding an in-depth examination of cost-drivers using procedure logs, diagnostic codes, and frequency of hospitalizations could improve the prediction model and provide an effective intervention protocols to target specific patient characteristics.
Incidences were also higher in ZIP codes with higher rates of hospitalizations for hyperglycemic complications.
In 5% of hospitalizations, coded procedures occurred on more than one day.
The column totals in Table 3 illustrate the proportion of hospitalizations coded with each of the modified-NYU severity ratings.
The incidence of ESRD attributed to diabetes was higher in ZIP codes with higher proportions of hospitalizations with no insurance (r = 0.45; P < 0.0001) or Medicaid (r = 0.69; P < 0.0001) and in ZIP codes with higher rates of hospitalizations for hyperglycemic complications (r = 0.27; P < 0.0001).
The incidence was lower in ZIP codes with higher proportions of hospitalizations with managed care insurance (r = −0.37; P < 0.0001) and was lower in primary care provider shortage areas and rural locations.
Secondly, even when disease categories are labelled in the same way, Ansari et al. [ 23] exclude a significant proportion of hospitalisations as compared to Weissman et al., due to a more restricted list of ICD codes, through the exclusion of hospitalizations with surgical procedures.
The Swedish Inpatient Register contains information on all hospitalizations in Sweden, including each patient's individual personal identification number, dates of hospitalizations, discharge code, and E-codes (external causes) according to the International Classification of Diseases (ICD-9: 1990 to 1996, ICD-10: 1997 to 2005) [ 22].
