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.
In fact, an elevated level is considered an independent risk factor for heart disease. High homocysteine is associated with low levels of vitamin B6, B12, and folate and renal disease. Research has shown, however, that reducing your homocysteine levels with vitamins does not reduce the risk of heart disease.