A 47-year-old man with chronic kidney disease comes to the c…

A 47-year-old man with chronic kidney disease comes to the clinic for a 3-month follow up appointment. At his last visit, his eGFR was 32mL/min/1.73m2.  Today his eGFR is 50 mL/min/1.73m2.  What is the classification of his chronic kidney disease at this visit?