Patient presents with complaints consistent with narcolepsy without cataplexy.  The patient reports excessive daytime sleepiness (EDS), disturbed nocturnal sleep, and significant impairment in daily functioning due to sleepiness.  Symptoms include persistent drowsiness, difficulty maintaining wakefulness, and unintended sleep episodes.  The patient denies experiencing cataplexy, sleep paralysis, or hypnagogic hallucinations.  The Epworth Sleepiness Scale (ESS) score is elevated at [insert score].  Multiple Sleep Latency Test (MSLT) reveals a mean sleep latency of [insert value] minutes with [insert number] sleep onset REM periods (SOREMPs), confirming the diagnosis of narcolepsy.  Nocturnal polysomnography (PSG) shows [describe relevant findings, e.g., shortened sleep latency, fragmented sleep architecture, etc.].  Differential diagnoses considered include idiopathic hypersomnia, obstructive sleep apnea, and other sleep disorders.  The patient's medical history is significant for [list relevant medical history].  Current medications include [list current medications].  No known drug allergies.  Plan includes patient education regarding narcolepsy management, including sleep hygiene practices.  Pharmacological interventions will be considered, with potential options including wake-promoting agents such as modafinil or armodafinil.  Follow-up sleep study scheduled in [timeframe] to assess treatment efficacy.  ICD-10 code G47.01 (narcolepsy without cataplexy) is assigned.  Referrals to a sleep specialist andor a support group for individuals with narcolepsy are recommended.