ICD-10-CM 2027 diagnosis code

N04Nephrotic syndrome

Not billable — use a more specific code

N04 is a header code, so it can't be reported by itself. Choose one of the 12 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N04

N04 is the ICD-10-CM diagnosis code for nephrotic syndrome. It belongs to block N00-N08 (glomerular diseases) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 12 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: N04.0 (with minor glomerular abnormality), N04.1 (with focal and segmental glomerular lesions), N04.2 (with diffuse membranous glomerulonephritis), N04.3 (with diffuse mesangial proliferative glomerulonephritis), N04.4 (with diffuse endocapillary proliferative glomerulonephritis), N04.5 (with diffuse mesangiocapillary glomerulonephritis), N04.6 (with dense deposit disease), N04.7 (with diffuse crescentic glomerulonephritis) and 4 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under N04

Coding notes

IncludesFurther defines the content of the category

congenital nephrotic syndrome
lipoid nephrosis

Notes that apply from higher levels

Instructions written at a parent level also apply to N04.

Broader instructions also apply from N00-N08 Glomerular diseases and Chapter 14: Diseases of the genitourinary system.

Codes whose notes reference N04

Q63Excludes1

Code history

2016
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2021
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2023
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about N04

Is N04 billable?: No. N04 is a header code. Report one of its more specific subcodes instead.