Patient presents with complaints of dry mouth, medically termed xerostomia.  Symptoms include persistent oral dryness, difficulty swallowing, altered taste sensation, and a burning sensation in the mouth.  The patient reports waking up at night with a dry mouth and needing to sip water frequently.  On examination, the oral mucosa appears dry and sticky with reduced salivary flow.  The patient denies any recent changes in medications.  Differential diagnoses considered include Sjogren's syndrome, medication-induced xerostomia, and dehydration.  Assessment suggests xerostomia likely secondary to [etiology, e.g., medication side effect, dehydration, radiation therapy].  Plan includes patient education on oral hygiene practices, including saliva substitutes and sugar-free candies to stimulate saliva production.  The patient was advised to increase fluid intake and avoid alcohol and caffeine.  A follow-up appointment is scheduled to assess symptom improvement and consider further investigations if necessary.  ICD-10 code K11.7 is assigned.  Medical billing codes will reflect evaluation and management services provided.