DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

N05 Unspecified nephritic syndrome

  • Header · not billable

N05 is not billable. The category heads 11 billable codes in FY2027: the 11 codes directly below it.

Index → code

  • Klebs' disease → N05.-
  • Glomerulonephritis → N05.9
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) → N05.9

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N00-N08 Glomerular diseases (N00-N08)
  3. N05 Unspecified nephritic syndrome
Billable codes
11
Subdivisions
11
CC / MCC codes
5 / 0
HCC V28 codes
0
New FY2027
0
Index entries
64

Codes in N05

  1. N05.0
    Unspecified nephritic syndrome with minor glomerular abnormality
    Billable
    Inclusion terms 1

    Inclusion terms

    • Unspecified nephritic syndrome with minimal change lesion
  2. N05.1
    Unspecified nephritic syndrome with focal and segmental glomerular lesions
    Billable
    Inclusion terms 3

    Inclusion terms

    • Unspecified nephritic syndrome with focal and segmental hyalinosis
    • Unspecified nephritic syndrome with focal and segmental sclerosis
    • Unspecified nephritic syndrome with focal glomerulonephritis
  3. N05.2
    Unspecified nephritic syndrome with diffuse membranous glomerulonephritis
    BillableCC
  4. N05.3
    Unspecified nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
    BillableCC
  5. N05.4
    Unspecified nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
    BillableCC
  6. N05.5
    Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
    BillableCC
    Inclusion terms 1, Excludes1 2

    Inclusion terms

    • Unspecified nephritic syndrome with membranoproliferative glomerulonephritis, types 1 and 3, or NOS

    Excludes1

    • Unspecified nephritic syndrome with C3 glomerulonephritis (N05.A) N05.A
    • Unspecified nephritic syndrome with C3 glomerulopathy (N05.A) N05.A
  7. N05.6
    Unspecified nephritic syndrome with dense deposit disease
    Billable
    Inclusion terms 2

    Inclusion terms

    • Unspecified nephritic syndrome with C3 glomerulopathy with dense deposit disease
    • Unspecified nephritic syndrome with membranoproliferative glomerulonephritis, type 2
  8. N05.7
    Unspecified nephritic syndrome with diffuse crescentic glomerulonephritis
    Billable
    Inclusion terms 1

    Inclusion terms

    • Unspecified nephritic syndrome with extracapillary glomerulonephritis
  9. N05.8
    Unspecified nephritic syndrome with other morphologic changes
    Billable
    Inclusion terms 1

    Inclusion terms

    • Unspecified nephritic syndrome with proliferative glomerulonephritis NOS
  10. N05.9
    Unspecified nephritic syndrome with unspecified morphologic changes
    Billable
  11. N05.A
    Unspecified nephritic syndrome with C3 glomerulonephritis
    BillableCC
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Unspecified nephritic syndrome with C3 glomerulopathy

    Excludes1

    • Unspecified nephritic syndrome (with C3 glomerulopathy) with dense deposit disease (N05.6) N05.6

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At N05

Includes

  • glomerular disease NOS
  • glomerulonephritis NOS
  • nephritis NOS
  • nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8

Excludes1

  • nephropathy NOS with no stated morphological lesion (N28.9) N28.9
  • renal disease NOS with no stated morphological lesion (N28.9) N28.9
  • tubulo-interstitial nephritis NOS (N12) N12

Notes that also apply

Block N00-N08 instructions (Excludes1 1, Code also 1): printed on the block page.

Chapter 14 instructions (Excludes2 8): printed on the chapter 14 page.

Index entries

  • Klebs' disease → N05.-
  • Glomerulonephritis → N05.9
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) → N05.9
  • Disease, diseasedKlebs' → N05.-
  • Abnormal, abnormality, abnormalitiesglomerular, minor → N05.0
  • Change(s) (in) (of)minimal (glomerular) → N05.0
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)minimal change → N05.0
  • Glomerulonephritisfocal (and segmental) → N05.1
  • Hyalinosisfocal and segmental (glomerular) → N05.1
  • Sclerosis, scleroticfocal and segmental (glomerular) → N05.1
  • Glomerulonephritismembranous (diffuse) NEC → N05.2
  • Glomerulonephritisendocapillary proliferative (diffuse) NEC → N05.4
  • Glomerulonephritismembranoproliferative (diffuse)(type 1 or 3) → N05.5
  • Glomerulonephritismesangiocapillary (diffuse) NEC → N05.5
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)membranoproliferative (diffuse) (type 1 or 3) → N05.5
  • Disease, diseaseddense deposit → N05.6
  • Glomerulonephritisdense deposit → N05.6
  • Glomerulonephritiscrescentic (diffuse) NEC → N05.7
  • Glomerulonephritisextracapillary NEC → N05.7
  • Glomerulonephritisimmune complex (circulating) NEC → N05.8
  • Glomerulonephritisnecrotic, necrotizing NEC → N05.8
  • Glomerulonephritisproliferative NEC → N05.8
  • Glomerulonephritisspecified pathology NEC → N05.8
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)diffuse sclerosing → N05.8
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)immune complex (circulating) NEC → N05.8
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)necrotic, necrotizing NEC → N05.8
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)proliferative NEC → N05.8
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)sclerosing, diffuse → N05.8
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)specified pathology NEC → N05.8
  • Nephropathyproliferative NEC → N05.8
  • Disorder (of)glomerular (in) → N05.9
  • Glomerulonephritispoststreptococcal NEC → N05.9
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)poststreptococcal → N05.9
  • Disease, diseasedglomerularminimal change → N05.0
  • Glomerulonephritiswithminimal change → N05.0
  • Glomerulonephritiswithminor glomerular abnormality → N05.0
  • Lesion(s) (nontraumatic)glomerularminimal change → N05.0
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)withminor glomerular abnormality → N05.0
  • Lesion(s) (nontraumatic)glomerularfocal and segmental → N05.1
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)withfocal and segmental glomerular lesions → N05.1

24 more, longer entries are not listed; the search box finds them by word.

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