ICD-10-CM > N00-N99 > N17-N19 > N18 N18 Chronic kidney disease (CKD) Non-Billable/Non-Specific Code First any associated:diabetic chronic kidney disease (E08.22, E09.22, E10.22, E11.22, E13.22)hypertensive chronic kidney disease (I12.-, I13.-) Use Additional code, if applicable, to identify:associated cachexia (E88.A)kidney transplant status (Z94.0) Codes N18.1Chronic kidney disease, stage 1N18.2Chronic kidney disease, stage 2 (mild)N18.3Chronic kidney disease, stage 3 (moderate)N18.30Chronic kidney disease, stage 3 unspecifiedN18.31Chronic kidney disease, stage 3aN18.32Chronic kidney disease, stage 3bN18.4Chronic kidney disease, stage 4 (severe)N18.5Chronic kidney disease, stage 5N18.6End stage renal diseaseN18.9Chronic kidney disease, unspecified