Patient presents with symptoms consistent with maxillary sinusitis.  Chief complaints include facial pain and pressure localized to the maxillary sinus area, nasal congestion, purulent nasal discharge, and headache.  Onset of symptoms began approximately [duration] ago and is reported as [acute, subacute, chronic].  Patient reports [aggravating factors, e.g., bending over] and [alleviating factors, e.g., warm compresses].  Associated symptoms may include [list associated symptoms, e.g., fever, cough, fatigue, toothache, halitosis].  Physical examination reveals [objective findings, e.g., tenderness to palpation over the maxillary sinuses, erythematous nasal mucosa, purulent drainage].  Differential diagnoses considered include allergic rhinitis, viral upper respiratory infection, and dental infection.  Based on patient history, physical exam findings, and [diagnostic tests, e.g., transillumination, CT scan], the diagnosis of maxillary sinusitis is confirmed.  Treatment plan includes [pharmacological interventions, e.g., saline nasal irrigation, decongestants, analgesics, antibiotics if indicated] and [non-pharmacological interventions, e.g., humidification, hydration].  Patient education provided on disease process, medication administration, potential complications, and follow-up care.  Follow-up scheduled in [timeframe] to assess treatment response and symptom resolution.  ICD-10 code J01.00 (Acute maxillary sinusitis) or J32.0 (Chronic maxillary sinusitis) assigned.