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N03 Chronic nephritic syndrome

ICD-10-CM category N03 sits in Chapter 14 (Diseases of the genitourinary system, N00-N99). It contains 11 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Billable codes in N03

CodeDescription
N03.0Chronic nephritic syndrome with minor glomerular abnormality
N03.1Chronic nephritic syndrome with focal and segmental glomerular lesions
N03.2Chronic nephritic syndrome with diffuse membranous glomerulonephritis
N03.3Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
N03.4Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
N03.5Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
N03.6Chronic nephritic syndrome with dense deposit disease
N03.7Chronic nephritic syndrome with diffuse crescentic glomerulonephritis
N03.8Chronic nephritic syndrome with other morphologic changes
N03.9Chronic nephritic syndrome with unspecified morphologic changes
N03.AChronic nephritic syndrome with C3 glomerulonephritis

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