Isolated proteinuria with specified morphological lesion (N06) ICD-10-CM
The N06 code range covers isolated proteinuria with specified morphological lesion with 16 ICD-10-CM diagnosis codes. 14 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- Proteinuria not associated with specific morphologic lesions R80.0
Codes in the N06 Range 16 codes · 14 billable
- N06 Isolated proteinuria with specified morphological lesionNon-billable
- N06.0 Isolated proteinuria with minor glomerular abnormality
- N06.1 Isolated proteinuria with focal and segmental glomerular lesions
- N06.2 Isolated proteinuria with diffuse membranous glomerulonephritisNon-billable
- N06.20 Isolated proteinuria with diffuse membranous glomerulonephritis, unspecified
- N06.21 Primary membranous nephropathy with isolated proteinuria
- N06.22 Secondary membranous nephropathy with isolated proteinuria
- N06.29 Other isolated proteinuria with diffuse membranous glomerulonephritis
- N06.3 Isolated proteinuria with diffuse mesangial proliferative glomerulonephritis
- N06.4 Isolated proteinuria with diffuse endocapillary proliferative glomerulonephritis
- N06.5 Isolated proteinuria with diffuse mesangiocapillary glomerulonephritis
- N06.6 Isolated proteinuria with dense deposit disease
- N06.7 Isolated proteinuria with diffuse crescentic glomerulonephritis
- N06.8 Isolated proteinuria with other morphologic lesion
- N06.9 Isolated proteinuria with unspecified morphologic lesion
- N06.A Isolated proteinuria with C3 glomerulonephritis
About the N06 Code Range
Isolated proteinuria means protein in the urine. These codes distinguish abnormalities in the kidney’s glomeruli, its filtering structures.
N06 is organized by the type of glomerular abnormality, including minor, focal and segmental, and diffuse lesions. It also distinguishes dense deposit disease, C3 glomerulonephritis, and other or unspecified lesions.
Within diffuse membranous glomerulonephritis, N06.2 separates primary disease, secondary disease, unspecified disease, and other forms.
Questions About This Page
How many billable codes are in the N06 range?
Of the 16 codes in this range, 14 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the N06 range classify?
The range classifies isolated proteinuria with specified morphological lesion. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
