Patient presents with concerns regarding pituitary microadenoma, a benign pituitary tumor.  Symptoms reported include headaches, visual disturbances such as blurry vision or visual field defects, and menstrual irregularities or galactorrhea in female patients.  Hormonal imbalances, including hyperprolactinemia, may be present.  Diagnostic workup includes magnetic resonance imaging MRI of the pituitary gland demonstrating a lesion less than 10 mm in diameter, confirming the diagnosis of pituitary microadenoma.  Differential diagnoses considered include other pituitary lesions, such as macroadenomas or Rathke's cleft cysts, and non-pituitary causes of hormonal imbalances.  Treatment plan includes watchful waiting with serial MRI scans and hormonal level monitoring,  pharmacological management with dopamine agonists such as cabergoline or bromocriptine for prolactinomas, and consideration of transsphenoidal surgery if symptomatic or significant tumor growth is observed.  Patient education provided regarding pituitary tumor symptoms, treatment options, and potential complications.  Follow-up appointments scheduled for regular monitoring and assessment of treatment response.  ICD-10 code D35.2, benign neoplasm of pituitary gland, is assigned.  CPT codes for relevant procedures, such as MRI brain with and without contrast 70551, and hormonal assays will be documented upon completion.