ICD-10-CM > N00-N99 > N00-N08 > N00 > N00.A N00.A Acute nephritic syndrome with C3 glomerulonephritis Billable/Specific Copy Code Copy Description Applicable To Acute nephritic syndrome with C3 glomerulopathy, NOS Type 1 Excludes Acute nephritic syndrome (with C3 glomerulopathy) with dense deposit disease (N00.6)