Modifiers The following fourth-character subdivisions classify morphological changes and are for use with categories N00-N07. Subdivisions .0-.8 should not normally be used unless these have been specifically identified (e.g. by renal biopsy or autopsy). The three-character categories relate to clinical syndromes. Code Title .0 Minor glomerular abnormality Minimal change lesion .1 Focal and segmental glomerular lesions Focal and segmental:hyalinosis | sclerosis | Focal glomerulonephritis .2 Diffuse membranous glomerulonephritis .3 Diffuse mesangial proliferative glomerulonephritis .4 Diffuse endocapillary proliferative glomerulonephritis .5 Diffuse mesangiocapillary glomerulonephritis Membranoproliferative glomerulonephritis, types 1 and 3,
...[+++] or NOS .6 Dense deposit disease Membranoproliferative glomerulonephritis, type 2 .7 Diffuse crescentic glomerulonephritis Extracapillary glomerulonephritis .8 Other Proliferative glomerulonephritis NOS .9 Unspecified | Minimal change lesion | Focal and segmental:hyalinosis | sclerosis | Focal glomerulonephritis | Membranoproliferative glomerulonephritis, types 1 and 3, or NOS | Membranoproliferative glomerulonephritis, type 2 | Extracapillary glomerulonephritis | Proliferative glomerulonephritis NOS
