Documentation of medical reason(s) for patient having a hemoglobin level < 10 g/dl (e.g., patients who have non-renal etiologies of anemia [e.g., sickle cell anemia or other hemoglobinopathies, hypersplenism, primary bone marrow disease, anemia related to chemotherapy for diagnosis of malignancy, postoperative bleeding, active bloodstream or peritoneal infection], other medical reasons)