What is co-morbid condition?
co-morbid condition is Conditions that exist at the same time as the primary condition in the same patient (e.g. hypertension is a co-morbidity of many conditions, such as diabetes, ischemic heart disease, end-stage renal disease, etc.). Two or more conditions may interact in such a way as to prolong a stay in hospital or hinder successful rehabilitation.
source: A GLOSSARY OF TERMS FOR COMMUNITY HEALTH CARE AND SERVICES FOR OLDER PERSONS. World Health Organization, 2004.