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 level in the blood plasma is a risk factor and predictor of Alzheimerâs Disease. Therefore if you scored low in the Cognitive Function Test, it is advisable to follow this up with a homocysteine test. In South Africa this is available from a number of laboratories such as Lancet Labs and Ampath.