DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

N06 Isolated proteinuria with specified morphological lesion

  • Header · not billable

N06 is not billable. The category heads 14 billable codes in FY2027, grouped under 11 subdivisions.

Index → code

  • Nephropathymembranous (diffuse) → N06.20
  • Nephropathymembranous (diffuse)primary → N06.21
  • Nephropathymembranous (diffuse)secondary → N06.22

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N00-N08 Glomerular diseases (N00-N08)
  3. N06 Isolated proteinuria with specified morphological lesion
Billable codes
14
Subdivisions
11
CC / MCC codes
8 / 0
HCC V28 codes
0
New FY2027
0
Index entries
17

Codes in N06

  1. N06.0
    Isolated proteinuria with minor glomerular abnormality
    Billable
    Inclusion terms 1

    Inclusion terms

    • Isolated proteinuria with minimal change lesion
  2. N06.1
    Isolated proteinuria with focal and segmental glomerular lesions
    Billable
    Inclusion terms 3

    Inclusion terms

    • Isolated proteinuria with focal and segmental hyalinosis
    • Isolated proteinuria with focal and segmental sclerosis
    • Isolated proteinuria with focal glomerulonephritis
  3. N06.2
    Isolated proteinuria with diffuse membranous glomerulonephritis
    Header
  4. N06.20
    Isolated proteinuria with diffuse membranous glomerulonephritis, unspecified
    BillableCC
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Membranous nephropathy, NOS

    Excludes1

    • membranous nephropathy NOS with nephrotic syndrome (N04.20) N04.20
  5. N06.21
    Primary membranous nephropathy with isolated proteinuria
    BillableCC
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Idiopathic membranous nephropathy (with isolated proteinuria)
    • Primary membranous nephropathy, NOS

    Excludes1

    • primary membranous nephropathy with nephrotic syndrome (N04.21) N04.21
  6. N06.22
    Secondary membranous nephropathy with isolated proteinuria
    BillableCC
    Inclusion terms 1, Excludes1 1, Code first 1, Use additional code 1

    Inclusion terms

    • Secondary membranous nephropathy, NOS

    Excludes1

    • secondary membranous nephropathy with nephrotic syndrome (N04.22) N04.22

    Code first

    • , if applicable, other disease or disorder or poisoning causing membranous nephropathy

    Use additional code

    • code, if applicable, for adverse effect of drug causing membranous nephropathy
  7. N06.29
    Other isolated proteinuria with diffuse membranous glomerulonephritis
    BillableCC
  8. N06.3
    Isolated proteinuria with diffuse mesangial proliferative glomerulonephritis
    BillableCC
  9. N06.4
    Isolated proteinuria with diffuse endocapillary proliferative glomerulonephritis
    BillableCC
  10. N06.5
    Isolated proteinuria with diffuse mesangiocapillary glomerulonephritis
    BillableCC
    Inclusion terms 1, Excludes1 2

    Inclusion terms

    • Isolated proteinuria with membranoproliferative glomerulonephritis, types 1 and 3, or NOS

    Excludes1

    • Isolated proteinuria with C3 glomerulonephritis (N06.A) N06.A
    • Isolated proteinuria with C3 glomerulopathy (N06.A) N06.A
  11. N06.6
    Isolated proteinuria with dense deposit disease
    Billable
    Inclusion terms 2

    Inclusion terms

    • Isolated proteinuria with C3 glomerulopathy with dense deposit disease
    • Isolated proteinuria with membranoproliferative glomerulonephritis, type 2
  12. N06.7
    Isolated proteinuria with diffuse crescentic glomerulonephritis
    Billable
    Inclusion terms 1

    Inclusion terms

    • Isolated proteinuria with extracapillary glomerulonephritis
  13. N06.8
    Isolated proteinuria with other morphologic lesion
    Billable
    Inclusion terms 1

    Inclusion terms

    • Isolated proteinuria with proliferative glomerulonephritis NOS
  14. N06.9
    Isolated proteinuria with unspecified morphologic lesion
    Billable
  15. N06.A
    Isolated proteinuria with C3 glomerulonephritis
    BillableCC
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Isolated proteinuria with C3 glomerulopathy

    Excludes1

    • Isolated proteinuria (with C3 glomerulopathy) with dense deposit disease (N06.6) N06.6

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 N06

Excludes1

  • Proteinuria not associated with specific morphologic lesions (R80.0) R80.0

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

  • Nephropathymembranous (diffuse) → N06.20
  • Nephropathymembranous (diffuse)primary → N06.21
  • Nephropathymembranous (diffuse)secondary → N06.22
  • Proteinuriaisolatedwith glomerular lesion → N06.9
  • Proteinuriaisolatedwith glomerular lesionminimal change → N06.0
  • Proteinuriaisolatedwith glomerular lesionfocal and segmental hyalinosis or sclerosis → N06.1
  • Proteinuriaisolatedwith glomerular lesionmembranous (diffuse) → N06.20
  • Proteinuriaisolatedwith glomerular lesionmesangial proliferative (diffuse) → N06.3
  • Proteinuriaisolatedwith glomerular lesiondense deposit disease → N06.6
  • Proteinuriaisolatedwith glomerular lesionspecified pathology NEC → N06.8
  • Proteinuriaisolatedwith glomerular lesionmembranous (diffuse)with diffuse membranous glomerulonephritis → N06.29
  • Proteinuriaisolatedwith glomerular lesiondiffuseendocapillary proliferative glomerulonephritis → N06.4
  • Proteinuriaisolatedwith glomerular lesiondiffusemesangiocapillary glomerulonephritis → N06.5
  • Proteinuriaisolatedwith glomerular lesiondiffusecrescentic glomerulonephritis → N06.7
  • Proteinuriaisolatedwith glomerular lesionC3glomerulonephritis → N06.A
  • Proteinuriaisolatedwith glomerular lesionC3glomerulopathy → N06.A
  • Proteinuriaisolatedwith glomerular lesionC3glomerulopathywith dense deposit disease → N06.6

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy