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 addition, medications (metformin, fenofibrate) and/or vitamin supplements (vitamin B6, 12 and folic acid) were not allowed, so that homocysteine values could not be influenced. Mean plasma homocysteine levels were found to be significantly higher in the group 1 compared to the group 2 (18. Indeed, of the 13 most common site-specific forms of cancer in the prospective study, only lung cancer--the fourth most common--was associated with an elevated homocysteine level, Dr.