Patient presents with complaints consistent with a urinary tract infection (UTI) in pregnancy.  Symptoms include dysuria, urinary frequency, urgency, and lower abdominal discomfort.  Patient denies fever, chills, flank pain, nausea, or vomiting.  On physical examination, the patient is afebrile and vital signs are stable.  Costovertebral angle tenderness is absent.  Urinalysis reveals positive leukocyte esterase and nitrites, indicative of a UTI.  Considering the gestational age and presenting symptoms, a diagnosis of urinary tract infection in pregnancy is made.  Differential diagnoses considered include asymptomatic bacteriuria, pyelonephritis, and interstitial cystitis.  Plan includes urine culture and sensitivity testing to guide antibiotic therapy.  Patient education provided regarding increased fluid intake, proper hygiene practices, and the importance of completing the prescribed antibiotic course.  Risks and benefits of antibiotic treatment in pregnancy were discussed.  Patient prescribed nitrofurantoin macrocrystals, a pregnancy-safe antibiotic, for seven days.  Follow-up urine culture will be obtained post-treatment to confirm eradication of infection.  Patient advised to return or contact the office if symptoms worsen or do not improve within 48-72 hours.  This diagnosis is consistent with ICD-10 code O23.0 and may require additional CPT codes for the urinalysis, urine culture, and office visit depending on complexity.  Appropriate medical billing codes will be applied based on provided services and documented patient encounter.