Testosterone and Vitamin D

What diagnosis will get these two paid when they are done for precautionary reasons.

What is "precautionary"?

For Vitamin D I use almost every diagnosis and get no denials- V70.0, 401.1, 250.00, etc. It apparently is the most ordered test in the country now!

For testosterone, you need a symptom- fatigue, impotence, sleep disorder associated with low testosterone levels for billing.