using previous note to code different visit

Patient came in to facility again with same dx to get an injection that she couldn't get the day before because she didn't have anyone to drive her home. Doctor states in HPI see notes dated 10/2/12. Can I use that note to code ROS and exam or do I just code the injection?

Oct 10th, 2012 - nmaguire 2,606

re: using previous note to code different visit

Just code the injection