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Useful Resources


Claims-Based Frailty Index estimates a deficit-accumulation frailty index using International Classification of Diseases diagnosis codes, Current Procedural Terminology codes, and Healthcare Common Procedure Coding System codes in the prior 12 months in administrative claims data.  It is available for SAS, Stata, R, Python, and Java at:



BIDMC Senior Health Calculator applies the standard deficit-accumulation approach to routinely collected items of a comprehensive geriatric assessment to calculate the frailty index.  It is available at: