What is the Nomenclature and Description for Rating Guideline Recommendations?
Within each recommendation, the strength of recommendation is indicated as Level 1, Level 2, or Not Graded, and the quality of the supporting evidence is shown as A, B, C, or D. Reference Keys CKD Stage Description GFR (ml/min per 1.73 m2 ) 1 Kidney damage with normal or increased GFR Z90 2 Kidney damage with mild decreased GFR 60 89 3 Moderate decreased GFR 30 59 4 Severe decreased GFR 15 29 Kidney failure o15 (or dialysis) CKD, chronic kidney disease; GFR, glomerular filtration rate. CKD 1 5T notation applies to kidney transplant recipients. a 5D if dialysis (HD or PD).