All ICD10 Codes

N03

Non-Billable
ChapterN00–N99
Rankcategory
Official Description

Chronic nephritic syndrome

Use a more specific code (11 billable)
N03.0Chronic nephritic syndrome with minor glomerular abnormalityN03.1Chronic nephritic syndrome with focal and segmental glomerular lesionsN03.2Chronic nephritic syndrome with diffuse membranous glomerulonephritisN03.3Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritisN03.4Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritisN03.5Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritisN03.6Chronic nephritic syndrome with dense deposit diseaseN03.7Chronic nephritic syndrome with diffuse crescentic glomerulonephritisN03.8Chronic nephritic syndrome with other morphologic changesN03.9Chronic nephritic syndrome with unspecified morphologic changesN03.AChronic nephritic syndrome with C3 glomerulonephritis
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

CH14 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

N00-N08 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • hypertensive chronic kidney disease (I12.-)
Code Also
  • any associated kidney failure (N17-N19).

Instructional Notes

Includes
  • chronic glomerular disease
  • chronic glomerulonephritis
  • chronic nephritis
Excludes1(Not coded here. Use a different code.)
  • chronic tubulo-interstitial nephritis (N11.-)
  • diffuse sclerosing glomerulonephritis (N05.8-)
  • nephritic syndrome NOS (N05.-)

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N00-N08Glomerular diseases (N00-N08)
N03Chronic nephritic syndromeNot billable
N03.0Chronic nephritic syndrome with minor glomerular abnormalityBillable
N03.1Chronic nephritic syndrome with focal and segmental glomerular lesionsBillable
N03.2Chronic nephritic syndrome with diffuse membranous glomerulonephritisBillable
N03.3Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritisBillable
N03.4Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritisBillable
N03.5Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritisBillable
N03.6Chronic nephritic syndrome with dense deposit diseaseBillable
N03.7Chronic nephritic syndrome with diffuse crescentic glomerulonephritisBillable
N03.8Chronic nephritic syndrome with other morphologic changesBillable
N03.9Chronic nephritic syndrome with unspecified morphologic changesBillable
N03.AChronic nephritic syndrome with C3 glomerulonephritisBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N03:

blockN00-N08
Glomerular diseases (N00-N08)
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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