2027 ICD-10-CM Diagnosis Code N26.9Renal sclerosis, unspecified
ICD-10-CM Codes›N00–N99›N25-N29›N26
- Billable — Valid for Submission
- Chronic Condition
N26.9 is a billable ICD-10-CM diagnosis code for renal sclerosis, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 698 through 700. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nephritis; nephrosis; renal sclerosis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chronic drug-induced renal disease
- Chronic lithium nephrotoxicity
- Congenital nephrotic syndrome
- Diffuse mesangial sclerosis
- Diffuse mesangial sclerosis with ocular abnormalities
- Disorder of kidney co-occurrent with human immunodeficiency virus infection
- Familial mesangial sclerosis
- Focal segmental glomerulosclerosis
- Focal segmental glomerulosclerosis caused by lithium
- Focal segmental glomerulosclerosis caused by substance
- Focal segmental glomerulosclerosis co-occurrent with human immunodeficiency virus infection
- Focal segmental glomerulosclerosis due to sickle cell disease
- Focal segmental glomerulosclerosis with infectious disease
- Glomerular disease due to diffuse mesangial sclerosis
- Glomerular disease due to hematological disease
- Glomerular fibrosis
- Glomerulosclerosis
- Idiopathic nodular glomerulosclerosis
- Ischemia of kidney
- Ischemic glomerulopathy
- Ischemic nephropathy
- Lithium nephropathy
- Renal fibrosis
- Renal interstitial fibrosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N26.9: its own notes plus those printed at N26, block N25-N29, and Chapter 14. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
kidney N26.9
Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) N05.9
cirrhotic N26.9
Nephrosclerosis (arteriolar) (arteriosclerotic) (chronic) (hyaline) See Also: Hypertension, kidney;
senile N26.9
renal N26.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Kidney Diseases
You have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N26.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N26.9Overview
What is the ICD-10 code for renal sclerosis, unspecified?
The ICD-10-CM code for renal sclerosis, unspecified is N26.9 (sometimes written as N269). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N26.9 (Unspecified contracted kidney) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report renal sclerosis, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N26.9 group to?
When renal sclerosis, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 699, 698, 700, with relative weights from 0.6740 to 1.6400 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N26.9 be reported with a code from I12?
Not as a rule. The Excludes1 note at N26, which applies to N26.9, lists "contracted kidney due to hypertension (I12.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of N26.9?
Under the General Equivalence Mappings, renal sclerosis, unspecified converts to ICD-9-CM 587 (renal sclerosis NOS). The mapping is approximate, so confirm the match fits the documentation.
