In the guidelines for code 90839, it specifies to use this code for "first 30-74 minutes of psychotherapy for crisis on a given date". However, the code description states: 90839--Psychotherapy for crisis, first 60 minutes". The add-on code of +90840---each additional 30 minutes. I gave a quiz, and the question was: List the code for Psychotherapy for crisis, total time 70 minutes? Which is correct; the guidelines, or the code description, or am I missing something? I teach coding, and my students caught this discrepancy when trying to answer a question on a quiz.