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.
As the homocysteine level rises above this level the risk of cardiovascular disease will increase. The higher these levels the greater your risk of having a heart attack or stroke. Most labs report a normal homocysteine should be in the range of 5 to 12 or even 15 micromols/L.