Patient is a 19-year-old sophomore at the local university. She has just recently recovered from a bout with meningitis. She is seen at the outpatient clinic at McGraw Hospital. She is complaining of extreme thirst and polyuria, muscle weakness, and headache. On physical exam, she is moderately dehydrated as evidenced by dry mucous membranes. Labs confirmed the dehydration; she is markedly

hypernatremic. Fearing she may have had a relapse of the meningitis, the physician ordered an MRI of the brain. Based on the results of the tests, the physician ordered a water deprivation test be done in the office.

Patient was subsequently diagnosed with diabetes insipidus. DDAVP was prescribed. The patient was educated about her condition and how to manage the symptoms. She was asked to return to the outpatient clinic in two weeks to monitor her progress.

Dx: Diabetes insipidus
What will be an ideal response?

Answer: Diabetes insipidus—E23.3