Is a symptom of congestive heart failure coughing blood?

Coughing up blood (hemoptosis) is usually not associated with CHF. More than likely, people will cough up blood if they are really coughing hard and are taking too much blood See also:
Where does the blood go that has to be replace due to chemo treatments? thinner medication. Blood can also come from the lungs, but it is usually darker in color (like rust). Also, you may also be right that the blood could be coming from the nose. A nosebleed can drip down the back of someone's throat, which they then cough up, making them to think they are coughing up blood. However, you would usually also see blood coming out of the nose as well.

Since this is a new symptom, I would let your dad's health care provider know your concerns today. He should be examined if he is coughing up blood, as this can be the sign of something serious.

Ask Doctor for Sputum test and Ct-scan on your lung. X-ray would not able to see the underlying problem of this. Best Wishes,