In the ICd-10 guidelines it states to assume a causal relationship between chronic kidney disease and hypertension. However, while coding a patient's chart at work I was informed to assume this was incorrect unless the provider documents that there is a relationship between hypertension and chronic kidney disease; such as key words that state due to or with. I was informed to code hypertension as just I10 because there was no documentation stating a relationship between hypertension and chronic kidney disease?? I work in a nursing home-long term care facility and just wanted to verify. Thanks.