A 16-year-old female is being admitted by her family physician with a 2-week history of fatigue and fever. It has been progressively getting worse. She is suffering from dehydration. The physician performs a comprehensive history to look for explanations for her fatigue, including recent activity level and recent sleep habits. A detailed examination is performed and she is diagnosed with mononucleosis and admitted for treatment. What are the ICD-10-CM and ICD-9-CM Codes?