I work for an ophthalmologist and I have a patient who presented for "routine" exam, but has family history of glaucoma. (VISIT WAS JULY 2015 SO ICD-9!) Patient has enlarged cup to disc ratio and as such is considered "glaucoma suspect". What is the best way to code this exam so that Aetna will pay as preventive screening? I'm not sure V72.0 is appropriate since patient has a documentable medical diagnosis.