Source:http://linkedlifedata.com/resource/umls/id/C0009488
MSH: The presence of co-existing or additional diseases with reference to an initial diagnosis or with reference to the index condition that is the subject of study. Comorbidity may affect the ability of affected individuals to function and also their survival; it may be used as a prognostic indicator for length of hospital stay, cost factors, and outcome or survival.,NCI: The condition of having two or more diseases at the same time.,CSP: a concomitant but unrelated disease or pathologic process; usually used in epidemiology to indicate the coexistence of two or more disease processes.,NCI: The coexistence of two or more disease processes.