Stopping Sight Distance. Sight distance is the length of roadway ahead that is visible to the driver. The available sight distance on a roadway should be sufficiently long to enable a vehicle traveling at or a near the design speed to stop before reaching a stationary object in its path.
Revenue codes are 3-digit numbers that are used on hospital bills to tell the insurance companies either where the patient was when they received treatment, or what type of item a patient might have received as a patient.
In this case, revenue code 450 is the only code that could be used for this CPT code, thus making this one easy to code. A more complex example to use would be something like CPT 12001, which is a simple laceration repair of a wound on the scalp, trunk of the body, or the extremities such as hands and feet.