ICD-10-CM 2027
ICD-10 code for nephropathy
From the official ICD-10-CM alphabetic index entry “Nephropathy”. Page updated September 29, 2026.
About coding nephropathy
The ICD-10-CM code for nephropathy is N28.9 (Disorder of kidney and ureter, unspecified). The official index lists 66 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N28.9.
Within N28, choose N28.9 (Disorder of kidney and ureter, unspecified) only when documentation doesn't support a more specific option: ischemia and infarction of kidney (N28.0), cyst of kidney, acquired (N28.1) and other specified disorders of kidney and ureter (N28.8).
Don't report N28.9 together with the conditions in its Excludes1 note: chronic renal insufficiency (N18.9) and unspecified nephritic syndrome (N05.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific nephropathy codes (official index)
- with
- edema
- glomerular lesion
- amyloid, hereditary E85.0 — Non-neuropathic heredofamilial amyloidosis
- analgesic N14.0 — Analgesic nephropathy
- with medullary necrosis, acute N17.2 — Acute kidney failure with medullary necrosis
- Balkan (endemic) N15.0 — Balkan nephropathy
- chemical
- contrast-induced N14.11 — Contrast-induced nephropathy
- contrast medium, radiography N14.11 — Contrast-induced nephropathy
- diabetic
- drug-induced N14.2 — Nephropathy induced by unspecified drug, medicament or biological substance
- contrast-induced N14.11 — Contrast-induced nephropathy
- specified NEC N14.19 — Nephropathy induced by other drugs, medicaments and biological substances
- focal and segmental hyalinosis or sclerosis N02.1 — Recurrent and persistent hematuria with focal and segmental glomerular lesions
- heavy metal-induced N14.3 — Nephropathy induced by heavy metals
- hereditary NEC N07.9 — Hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions
- with
- APOL1-mediated kidney disease (AMKD) N07.B — Hereditary nephropathy, not elsewhere classified with APOL1-mediated kidney disease [AMKD]
- C3
- glomerulonephritis N07.A — Hereditary nephropathy, not elsewhere classified with C3 glomerulonephritis
- glomerulopathy N07.A — Hereditary nephropathy, not elsewhere classified with C3 glomerulonephritis
- with dense deposit disease N07.6 — Hereditary nephropathy, not elsewhere classified with dense deposit disease
- dense deposit disease N07.6 — Hereditary nephropathy, not elsewhere classified with dense deposit disease
- diffuse
- crescentic glomerulonephritis N07.7 — Hereditary nephropathy, not elsewhere classified with diffuse crescentic glomerulonephritis
- endocapillary proliferative glomerulonephritis N07.4 — Hereditary nephropathy, not elsewhere classified with diffuse endocapillary proliferative glomerulonephritis
- membranous glomerulonephritis N07.2 — Hereditary nephropathy, not elsewhere classified with diffuse membranous glomerulonephritis
- mesangial proliferative glomerulonephritis N07.3 — Hereditary nephropathy, not elsewhere classified with diffuse mesangial proliferative glomerulonephritis
- mesangiocapillary glomerulonephritis N07.5 — Hereditary nephropathy, not elsewhere classified with diffuse mesangiocapillary glomerulonephritis
- focal and segmental glomerular lesions N07.1 — Hereditary nephropathy, not elsewhere classified with focal and segmental glomerular lesions
- minor glomerular abnormality N07.0 — Hereditary nephropathy, not elsewhere classified with minor glomerular abnormality
- specified morphological changes NEC N07.8 — Hereditary nephropathy, not elsewhere classified with other morphologic lesions
- hypercalcemic N25.89 — Other disorders resulting from impaired renal tubular function
- hypertensive
- hypokalemic (vacuolar) N25.89 — Other disorders resulting from impaired renal tubular function
- IgA N02.B — Recurrent and persistent immunoglobulin A nephropathy
- with
- focal and segmental hyalinosis or sclerosis N02.B2 — Recurrent and persistent immunoglobulin A nephropathy with focal and segmental glomerular lesion
- glomerular lesion N02.B1 — Recurrent and persistent immunoglobulin A nephropathy with glomerular lesion
- focal and segmental N02.B2 — Recurrent and persistent immunoglobulin A nephropathy with focal and segmental glomerular lesion
- glomerulonephritis
- membranoproliferative (diffuse) N02.B3 — Recurrent and persistent immunoglobulin A nephropathy with diffuse membranoproliferative glomerulonephritis
- membranous (diffuse) N02.B4 — Recurrent and persistent immunoglobulin A nephropathy with diffuse membranous glomerulonephritis
- mesangial proliferative (diffuse) N02.B5 — Recurrent and persistent immunoglobulin A nephropathy with diffuse mesangial proliferative glomerulonephritis
- mesangiocapillary (diffuse) N02.B6 — Recurrent and persistent immunoglobulin A nephropathy with diffuse mesangiocapillary glomerulonephritis
- proliferative NEC N02.B9 — Other recurrent and persistent immunoglobulin A nephropathy
- specified pathology NEC N02.B9 — Other recurrent and persistent immunoglobulin A nephropathy
- lead N14.3 — Nephropathy induced by heavy metals
- membranoproliferative (diffuse) N02.5 — Recurrent and persistent hematuria with diffuse mesangiocapillary glomerulonephritis
- membranous (diffuse) N06.20 — Isolated proteinuria with diffuse membranous glomerulonephritis, unspecified
- with
- nephrotic syndrome N04.20 — Nephrotic syndrome with diffuse membranous glomerulonephritis, unspecified
- primary N04.21 — Primary membranous nephropathy with nephrotic syndrome
- secondary N04.22 — Secondary membranous nephropathy with nephrotic syndrome
- idiopathic, with nephrotic syndrome N04.21 — Primary membranous nephropathy with nephrotic syndrome
- primary N06.21 — Primary membranous nephropathy with isolated proteinuria
- with nephrotic syndrome N04.21 — Primary membranous nephropathy with nephrotic syndrome
- secondary N06.22 — Secondary membranous nephropathy with isolated proteinuria
- with nephrotic syndrome N04.22 — Secondary membranous nephropathy with nephrotic syndrome
- mesangial (IgA/IgG)
- proliferative (diffuse) N02.3 — Recurrent and persistent hematuria with diffuse mesangial proliferative glomerulonephritis
- mesangiocapillary (diffuse) N02.5 — Recurrent and persistent hematuria with diffuse mesangiocapillary glomerulonephritis
- obstructive N13.8 — Other obstructive and reflux uropathy
- phenacetin N17.2 — Acute kidney failure with medullary necrosis
- phosphate-losing N25.0 — Renal osteodystrophy
- potassium depletion N25.89 — Other disorders resulting from impaired renal tubular function
- pregnancy-related O26.83 — Pregnancy related renal disease
- proliferative NEC N05.8 — Unspecified nephritic syndrome with other morphologic changes
- protein-losing N25.89 — Other disorders resulting from impaired renal tubular function
- saturnine N14.3 — Nephropathy induced by heavy metals
- sickle-cell D57 — Sickle-cell disorders
- toxic NEC N14.4 — Toxic nephropathy, not elsewhere classified
- due to
- drugs N14.2 — Nephropathy induced by unspecified drug, medicament or biological substance
- analgesic N14.0 — Analgesic nephropathy
- specified NEC N14.19 — Nephropathy induced by other drugs, medicaments and biological substances
- heavy metals N14.3 — Nephropathy induced by heavy metals
- vasomotor N17.0 — Acute kidney failure with tubular necrosis
- water-losing N25.89 — Other disorders resulting from impaired renal tubular function
Don't confuse with (Excludes1 for N28.9)
Common questions about nephropathy ICD-10 codes
What is the ICD-10 code for nephropathy?
- N28.9 — Disorder of kidney and ureter, unspecified. More specific codes apply when the documentation supports them: E85.0, N14.0, N17.2, N15.0 and others below.
What is the ICD-10 code for analgesic nephropathy?
- N14.0 — Analgesic nephropathy.
What is the ICD-10 code for balkan nephropathy?
- N15.0 — Balkan nephropathy.
What is the ICD-10 code for contrast-induced nephropathy?
- N14.11 — Contrast-induced nephropathy.
What is the ICD-10 code for drug-induced nephropathy?
- N14.2 — Nephropathy induced by unspecified drug, medicament or biological substance.
What is the ICD-10 code for heavy metal-induced nephropathy?
- N14.3 — Nephropathy induced by heavy metals.
What is the ICD-10 code for hereditary nec nephropathy?
- N07.9 — Hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions.
Is N28.9 billable?
- Yes. N28.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N28.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N28.9 as a principal diagnosis.
Is N28.9 a CC or MCC?
- No. N28.9 is neither a CC nor an MCC under MS-DRG v44.0.