I do coding for a radiology center. When we get the order from the doctor for an OB ultrasound for "check fetal growth" (and the radiologist's report says everything is normal) I use code V28.3. Some insurances are denying it for not medically necessary; however, they will pay for V28.81. I thought V28.81 was to check the baby's gender. Isn't "check fetal growth" just routine? Should I be using V28.81? Thanks!!