Searching for an improved clinical comorbidity index for use with ICD-9-CM administrative data

A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation

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Adapting a clinical comorbidity index for use with ICD-9-CM administrative databases

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Clinical Epidemiology: A Basic Science for Clinical Medicine.

Annals of Internal Medicine · 1991 · 3.5K citations

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Presentation adapting a clinical comorbidity index for use with ICD-9-CM administrative data: Differing perspectives

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Health Professions, Health Sciences, Clinical Classification Systems +13

The importance of classifying initial co-morbidity in evaluating the outcome of diabetes mellitus

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Medicine, Endocrinology, Internal Medicine +10