2027 ICD-10-CM Diagnosis Code N19Unspecified kidney failure
ICD-10-CM Codes›N00–N99›N17-N19›N19
- Billable — Valid for Submission
- Chronic Condition
N19 is a billable ICD-10-CM diagnosis code for unspecified kidney failure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 673 through 675, 682 through 684. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute and unspecified renal failure.
N19 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the ESRD (V21) category 140 for payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
N19 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Absent renal function
- Acquired platelet function disorder
- Action myoclonus renal failure syndrome
- Acute pericarditis secondary to uremia
- Acute symptomatic epileptic seizure due to metabolic disorder
- Acute symptomatic epileptic seizure due to uremia
- Anemia of renal disease
- Anemia secondary to renal failure
- Benign hypertensive renal disease
- Benign hypertensive renal disease with renal failure
- Blood urate above reference range
- Calcific arteriolopathy due to uremia
- Calciphylaxis
- Chronic progressive renal failure
- Chronic renal failure
- Dementia due to renal failure
- Dent's disease
- Dependence on prolonged intermittent renal replacement therapy due to renal failure
- Dependence on renal dialysis
- Disorder of kidney co-occurrent with human immunodeficiency virus infection
- Glomerular disease due to action myoclonus renal failure syndrome
- Hyperphosphatemia
- Hyperuricemia
- Hyperuricemia, anemia, renal failure syndrome
- Hyperuricemia, pulmonary hypertension, renal failure, alkalosis syndrome
- Myoclonic disorder due to uremia
- Neuropathy in renal failure
- Non-functioning kidney
- Pericarditis due to metabolic disease
- Pericarditis secondary to uremia
- Platelet dysfunction associated with uremia
- Renal failure associated with renal vascular disease
- Renal failure syndrome
- Renal failure syndrome co-occurrent with human immunodeficiency virus infection
- Renal failure-associated hyperphosphatemia
- Restless leg syndrome due to uremia
- Restless legs syndrome
- Secondary restless legs syndrome
- Sleep related movement disorder
- Urate nephropathy
- Uremia
- Uremia due to inadequate renal perfusion
- Uremia in pregnancy without hypertension
- Uremic coma
- Uremic encephalopathy
- Uremic gastritis
- X-linked recessive nephrolithiasis with renal failure
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N19: its own notes plus those printed at block N17-N19 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Uremia NOS
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.
- congenital renal failure (P96.0)
- drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14.-)
- extrarenal uremia (R39.2)
- hemolytic-uremic syndrome (D59.3-)
- hepatorenal syndrome (K76.7)
- postpartum hepatorenal syndrome (O90.41)
- posttraumatic renal failure (T79.5)
- prerenal uremia (R39.2)
- renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)
- renal failure following labor and delivery (O90.41)
- renal failure postprocedural (N99.0)
- 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
Instructional notes printed at other codes that name N19, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming N19: they are not reported together with it, unless the two conditions are unrelated.
- R39.2 Extrarenal uremiauremia NOS (N19)
Code Also 1
These codes say N19 may also be needed to fully describe the condition. The note gives no sequencing direction.
- Block N00-N08 Glomerular diseases
Index to Diseases and InjuriesGuidance
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Uremia
a clinical syndrome associated with the retention of renal waste products or uremic toxins in the blood. it is usually the result of renal insufficiency. most uremic toxins are end products of protein or nitrogen catabolism, such as urea or creatinine. severe uremia can lead to multiple organ dysfunctions with a constellation of symptoms.
Patient EducationClinical
Kidney Failure
Healthy kidneys clean your blood by removing excess fluid, minerals, and wastes. They also make hormones that keep your bones strong and your blood healthy. But if the kidneys are damaged, they don't work properly. Harmful wastes can build up in your body. Your blood pressure may rise.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N19 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N19Overview
What is the ICD-10 code for unspecified kidney failure?
The ICD-10-CM code for unspecified kidney failure is N19. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N19 (Unspecified kidney failure) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified kidney failure on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N19 group to?
When unspecified kidney failure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 674, 682, 673, 684, 683, 675, with relative weights from 0.6004 to 4.2523 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N19 be reported with a code from N17?
Not as a rule. The Excludes1 note on N19 lists "acute kidney failure (N17.-)". 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 N19?
Under the General Equivalence Mappings, unspecified kidney failure converts to ICD-9-CM 586 (renal failure NOS). The mapping is a direct match.
Does N19 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: N19 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the ESRD (V21) category 140 (Unspecified Renal Failure).
