ICD-10-CM > N00-N99 > N25-N29 > N28 > N28.9 N28.9 Disorder of kidney and ureter, unspecified Billable/Specific Copy Code Copy Description Applicable To Nephropathy NOSRenal disease (acute) NOSRenal insufficiency (acute) Type 1 Excludes chronic renal insufficiency (N18.9)unspecified nephritic syndrome (N05.-)