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N04.5 ICD-10-CA code: Nephrotic syndrome, diffuse mesangiocapillary glomerulonephritis

N04.5 is the ICD-10-CA code for “Nephrotic syndrome, diffuse mesangiocapillary glomerulonephritis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

N04.5

Nephrotic syndrome, diffuse mesangiocapillary glomerulonephritis

Short description: Nephrotic syndr diff mesngcp glomneph

ICD-10-CA · Canada · Also written N045

Index terms

Entries in CIHI’s alphabetical index that lead to N04.5. Searching the index by the condition the note names is how coders reach this code.

  • Nephrosis, nephrotic (congenital) (Epstein's) (syndrome), with glomerular lesion, hypocomplementemic

Notes for N04.5

As CIHI prints them, with any note N04.5 takes from the headings above it.

Includes

  • Membranoproliferative glomerulonephritis, types 1 and 3, or NOS
  • Congenital nephrotic syndromelipoid nephrosisFrom N04 Nephrotic syndrome

Use additional code

Add a code for this detail when the note documents it.

Excludes

Conditions classified elsewhere.

  • Hypertensive renal disease (I12)From N00-N08 Glomerular diseases
  • Certain conditions originating in the perinatal period (P00-P96)certain infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 14: Diseases of the genitourinary system (N00-N99)

Note

  • See note under chapter heading (N00-N08) for fourth character subdivisionsFrom N04 Nephrotic syndrome
  • 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..0 Minor glomerular abnormalityMinimal change lesion.1 Focal and segmental glomerular lesionsGlomerulonephritis, Hyalinosis, Sclerosis — focal and segmental.2 Diffuse membranous glomerulonephritis.3 Diffuse mesangial proliferative glomerulonephritis.4 Diffuse endocapillary proliferative glomerulonephritis.5 Diffuse mesangiocapillary glomerulonephritisMembranoproliferative glomerulonephritis, types 1 and 3, or NOS.6 Dense deposit diseaseMembranoproliferative glomerulonephritis, type 2.7 Diffuse crescentic glomerulonephritisExtracapillary glomerulonephritis.8 OtherProliferative glomerulonephritis NOS.9 UnspecifiedFrom N00-N08 Glomerular diseases

Where N04.5 sits

  1. 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
  2. 2Block N00-N08Glomerular diseases
  3. 3Category N04Nephrotic syndrome
  4. 4Valid code N04.5Nephrotic syndrome, diffuse mesangiocapillary glomerulonephritis

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See N04.5 in the CIHI source

Frequently asked questions

What does ICD-10-CA code N04.5 mean?

N04.5 is the ICD-10-CA code for “Nephrotic syndrome, diffuse mesangiocapillary glomerulonephritis” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is N04.5 in ICD-10-CA?

N04.5 sits under N04 Nephrotic syndrome, within N00-N08 Glomerular diseases, within Chapter 14: Diseases of the genitourinary system (N00-N99).

What coding notes apply to N04.5?

ICD-10-CA lists Includes, Note, Use additional code, Excludes notes for N04.5, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside N04.5

N04.0Nephrotic syndrome, minor glomerular abnormalityN04.1Nephrotic syndrome, focal and segmental glomerular lesionsN04.2Nephrotic syndrome, diffuse membranous glomerulonephritisN04.3Nephrotic syndrome, diffuse mesangial proliferative glomerulonephritisN04.4Nephrotic syndrome, diffuse endocapillary proliferative glomerulonephritisN04.6Nephrotic syndrome, dense deposit diseaseN04.7Nephrotic syndrome, diffuse crescentic glomerulonephritisN04.8Nephrotic syndrome, otherN04.9Nephrotic syndrome, unspecified