ICD-10 Code for Nephritis

Also indexed as (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)

The ICD-10-CM code for nephritis is N05.9 — Unspecified nephritic syndrome with unspecified morphologic changes. This is the code the Alphabetic Index gives for nephritis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

BillableUnspecified

N05.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which nephritis code should you use?

The Alphabetic Index lists 79 codes under Nephritis, nephritic. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

acute	N00.9	Acute nephritic syndrome with unspecified morphologic changes
amyloid	E85.4	Organ-limited amyloidosis
antitubular basement membraneNEC	N12	Tubulo-interstitial nephritis, not specified as acute or chronic
atrophic	N03.9	Chronic nephritic syndrome with unspecified morphologic changes
Balkan	N15.0	Balkan nephropathy
chronic	N03.9	Chronic nephritic syndrome with unspecified morphologic changes
cirrhotic	N26.9	Renal sclerosis, unspecified
complicating pregnancy	O26.83	Pregnancy related renal disease	not billable
croupous	N00.9	Acute nephritic syndrome with unspecified morphologic changes
diffuse sclerosing	N05.8	Unspecified nephritic syndrome with other morphologic changes
gonococcal	A54.21	Gonococcal infection of kidney and ureter
immune complexNEC	N05.8	Unspecified nephritic syndrome with other morphologic changes
lead	N14.3	Nephropathy induced by heavy metals
membranoproliferative	N05.5	Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
minimal change	N05.0	Unspecified nephritic syndrome with minor glomerular abnormality
necrotic, necrotizing NEC	N05.8	Unspecified nephritic syndrome with other morphologic changes
polycystic	Q61.3	Polycystic kidney, unspecified
poststreptococcal	N05.9	Unspecified nephritic syndrome with unspecified morphologic changes
proliferative NEC	N05.8	Unspecified nephritic syndrome with other morphologic changes
rapidly progressive	N01.9	Rapidly progressive nephritic syndrome with unspecified morphologic changes
salt losing or wasting NEC	N28.89	Other specified disorders of kidney and ureter
saturnine	N14.3	Nephropathy induced by heavy metals
sclerosing, diffuse	N05.8	Unspecified nephritic syndrome with other morphologic changes
specified pathology NEC	N05.8	Unspecified nephritic syndrome with other morphologic changes
subacute	N01.9	Rapidly progressive nephritic syndrome with unspecified morphologic changes
syphilitic	A52.75	Syphilis of kidney and ureter
tuberculous	A18.11	Tuberculosis of kidney and ureter
tubulo-interstitial	N12	Tubulo-interstitial nephritis, not specified as acute or chronic
war	N00.9	Acute nephritic syndrome with unspecified morphologic changes

Nephritis with

dense deposit disease	N05.6	Unspecified nephritic syndrome with dense deposit disease
focal and segmental glomerular lesions	N05.1	Unspecified nephritic syndrome with focal and segmental glomerular lesions
foot process disease	N04.9	Nephrotic syndrome with unspecified morphologic changes
minor glomerular abnormality	N05.0	Unspecified nephritic syndrome with minor glomerular abnormality
specified morphological changes NEC	N05.8	Unspecified nephritic syndrome with other morphologic changes
C3 › glomerulonephritis	N05.A	Unspecified nephritic syndrome with C3 glomerulonephritis
C3 › glomerulopathy	N05.A	Unspecified nephritic syndrome with C3 glomerulonephritis
diffuse › crescentic glomerulonephritis	N05.7	Unspecified nephritic syndrome with diffuse crescentic glomerulonephritis
diffuse › endocapillary proliferative glomerulonephritis	N05.4	Unspecified nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
diffuse › membranous glomerulonephritis	N05.2	Unspecified nephritic syndrome with diffuse membranous glomerulonephritis
diffuse › mesangial proliferative glomerulonephritis	N05.3	Unspecified nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
diffuse › mesangiocapillary glomerulonephritis	N05.5	Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
glomerular lesion › diffuse sclerosing	N05.8	Unspecified nephritic syndrome with other morphologic changes
glomerular lesion › idiopathic immune membranoproliferative glomerulonephritis	N04.B1	Nephrotic syndrome with idiopathic immune complex membranoproliferative glomerulonephritis (IC-MPGN)
glomerular lesion › secondary immune complex membranoproliferative glomerulonephritis	N04.B2	Nephrotic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)
lesion of › glomerulonephritis, proliferative	N05.8	Unspecified nephritic syndrome with other morphologic changes
lesion of › renal necrosis	N05.9	Unspecified nephritic syndrome with unspecified morphologic changes
C3 › glomerulopathy › with dense deposit disease	N05.6	Unspecified nephritic syndrome with dense deposit disease

Nephritis antiglomerular basement membraneantibody NEC

in Goodpasture's syndrome

M31.0

Hypersensitivity angiitis

Nephritis due to

subacute bacterial endocarditis	I33.0	Acute and subacute infective endocarditis
systemic lupus erythematosus	M32.14	Glomerular disease in systemic lupus erythematosus
typhoid fever	A01.09	Typhoid fever with other complications

Nephritis membranoproliferative

type 2

N05.6

Unspecified nephritic syndrome with dense deposit disease

Nephritis polycystic

adult type	Q61.2	Polycystic kidney, adult type
childhood type NEC	Q61.19	Other polycystic kidney, infantile type
infantile type NEC	Q61.19	Other polycystic kidney, infantile type
autosomal › dominant	Q61.2	Polycystic kidney, adult type
autosomal › recessive NEC	Q61.19	Other polycystic kidney, infantile type

Nephritis poststreptococcal

acute	N00.9	Acute nephritic syndrome with unspecified morphologic changes
chronic	N03.9	Chronic nephritic syndrome with unspecified morphologic changes
rapidly progressive	N01.9	Rapidly progressive nephritic syndrome with unspecified morphologic changes

Nephritis syphilitic

congenital	A50.59	Other late congenital syphilis, symptomatic
early	A51.44	Secondary syphilitic nephritis

Nephritis tubulo-interstitial

acute	N10	Acute pyelonephritis
chronic	N11.9	Chronic tubulo-interstitial nephritis, unspecified
Sjögren's syndrome	M35.04	Sjogren syndrome with tubulo-interstitial nephropathy
chronic › nonobstructive	N11.8	Other chronic tubulo-interstitial nephritis
chronic › obstructive	N11.1	Chronic obstructive pyelonephritis
chronic › specified NEC	N11.8	Other chronic tubulo-interstitial nephritis
due to › brucellosis	A23.9	Brucellosis, unspecified
due to › cryoglobulinemia	D89.1	Cryoglobulinemia
due to › glycogen storage disease	E74.00	Glycogen storage disease, unspecified
chronic › nonobstructive › reflux-associated	N11.0	Nonobstructive reflux-associated chronic pyelonephritis

Nephritis acute

with › dense deposit disease	N00.6	Acute nephritic syndrome with dense deposit disease
with › focal and segmental glomerular lesions	N00.1	Acute nephritic syndrome with focal and segmental glomerular lesions
with › idiopathic immune membranoproliferative glomerulonephritis	N00.B1	Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)
with › secondary immune complex membranoproliferative glomerulonephritis	N00.B2	Acute nephritic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)
with › minor glomerular abnormality	N00.0	Acute nephritic syndrome with minor glomerular abnormality
with › specified morphological changes NEC	N00.8	Acute nephritic syndrome with other morphologic changes
with › C3 › glomerulonephritis	N00.A	Acute nephritic syndrome with C3 glomerulonephritis
with › C3 › glomerulopathy	N00.A	Acute nephritic syndrome with C3 glomerulonephritis
with › diffuse › crescentic glomerulonephritis	N00.7	Acute nephritic syndrome with diffuse crescentic glomerulonephritis
with › diffuse › endocapillary proliferative glomerulonephritis	N00.4	Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
with › diffuse › membranous glomerulonephritis	N00.2	Acute nephritic syndrome with diffuse membranous glomerulonephritis
with › diffuse › mesangial proliferative glomerulonephritis	N00.3	Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
with › diffuse › mesangiocapillary glomerulonephritis	N00.5	Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
with › C3 › glomerulopathy › with dense deposit disease	N00.6	Acute nephritic syndrome with dense deposit disease

Nephritis chronic

with › dense deposit disease	N03.6	Chronic nephritic syndrome with dense deposit disease
with › focal and segmental glomerular lesions	N03.1	Chronic nephritic syndrome with focal and segmental glomerular lesions
with › minor glomerular abnormality	N03.0	Chronic nephritic syndrome with minor glomerular abnormality
with › specified morphological changes NEC	N03.8	Chronic nephritic syndrome with other morphologic changes
with › C3 › glomerulonephritis	N03.A	Chronic nephritic syndrome with C3 glomerulonephritis
with › C3 › glomerulopathy	N03.A	Chronic nephritic syndrome with C3 glomerulonephritis
with › diffuse › crescentic glomerulonephritis	N03.7	Chronic nephritic syndrome with diffuse crescentic glomerulonephritis
with › diffuse › endocapillary proliferative glomerulonephritis	N03.4	Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
with › diffuse › membranous glomerulonephritis	N03.2	Chronic nephritic syndrome with diffuse membranous glomerulonephritis
with › diffuse › mesangial proliferative glomerulonephritis	N03.3	Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
with › diffuse › mesangiocapillary glomerulonephritis	N03.5	Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
with › C3 › glomerulopathy › with dense deposit disease	N03.6	Chronic nephritic syndrome with dense deposit disease

Nephritis rapidly progressive

with › dense deposit disease	N01.6	Rapidly progressive nephritic syndrome with dense deposit disease
with › focal and segmental glomerular lesions	N01.1	Rapidly progressive nephritic syndrome with focal and segmental glomerular lesions
with › minor glomerular abnormality	N01.0	Rapidly progressive nephritic syndrome with minor glomerular abnormality
with › specified morphological changes NEC	N01.8	Rapidly progressive nephritic syndrome with other morphologic changes
with › C3 › glomerulonephritis	N01.A	Rapidly progressive nephritic syndrome with C3 glomerulonephritis
with › C3 › glomerulopathy	N01.A	Rapidly progressive nephritic syndrome with C3 glomerulonephritis
with › diffuse › crescentic glomerulonephritis	N01.7	Rapidly progressive nephritic syndrome with diffuse crescentic glomerulonephritis
with › diffuse › endocapillary proliferative glomerulonephritis	N01.4	Rapidly progressive nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
with › diffuse › membranous glomerulonephritis	N01.2	Rapidly progressive nephritic syndrome with diffuse membranous glomerulonephritis
with › diffuse › mesangial proliferative glomerulonephritis	N01.3	Rapidly progressive nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
with › diffuse › mesangiocapillary glomerulonephritis	N01.5	Rapidly progressive nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
with › C3 › glomerulopathy › with dense deposit disease	N01.6	Rapidly progressive nephritic syndrome with dense deposit disease

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources