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.
What is Homocysteine. Homocysteine is an amino acid, which is now considered a risk factor in several disease states. Elevated levels of homocysteine have been linked to increased risk of disease development and death from common conditions. Measured from the blood, homocysteine levels are a highly accurate way to determine health now and predict future predispositions to illnesses later on in life.