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DIA-2 Data Details

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DIA-2 Reduce the proportion of preventable hospitalizations in adults aged 65 years and older with diagnosed Alzheimer’s disease and other dementias

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
Medicare Administrative Data
Changed Since the Healthy People 2020 Launch: 
Baseline (Year): 
25.3 (2006–08)
Target-Setting Method: 
10 percent improvement

Persons aged 65 years and over diagnosed with Alzheimer’s disease and other dementias (as specified in the Denominator) with preventable ambulatory care sensitive hospitalizations


Persons aged 65 years and over diagnosed with Alzheimer’s disease and other dementias (ICD-9-CM codes 331.0, 331.1, 331.11, 331.19, 331.2, 331.7, 290.10, 290.11, 290.12, 290.13, 290.20, 290.21, 290.3, 290.40, 290.41, 290.42, 290.43, 294.0, 294.1, 294.10, 294.11, 294.8, 797 in any field on the claim)

Comparable Healthy People 2010 Objective: 
Not applicable
Data Collection Frequency: 
Methodology Notes: 

    Ambulatory care-sensitive conditions are conditions for which good outpatient care can potentially prevent the need for hospitalization or for which early intervention can prevent complications or more severe disease. Potentially preventable hospitalizations were defined consistent with those used by the Agency for Healthcare Research and Quality (AHRQ, Version 4.4). They include diabetes, short-term complications; diabetes, long-term complications; chronic obstructive pulmonary disease; hypertension; congestive heart failure; dehydration; bacterial pneumonia; urinary tract infections; angina without procedure; uncontrolled diabetes; adults asthma; and lower extremity amputations among patients with diabetes.

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch: 
This objective was moved from developmental to measurable status in 2014.