Modifier 25 should be appended to the office or other. outpatient service code to indicate that a significant, separately. identifiable E/M service was provided by the same physician. on the same day as the preventive medicine service.
The level of homocysteine in the blood can be measured with a simple blood test that is often, but not always, done after fasting. Homocysteine levels of 12 mmol/L are considered normal and levels below 10 mmol/L are considered desirable.
Homocysteine: An amino acid that is normally present in blood. Homocystinuria: A severe form of hyperhomocysteinemia. Hypercoagulable state: A condition in which a person has an increased tendency to form blood clots. Also called thrombophilia. Hyperhomocysteinemia: A form of acquired thrombophilia resulting from a high level of homocysteine in the blood. Hypothyroidism: A medical condition caused by deficient thyroid activity.