2019 ICD-10-CM Diagnosis Code N18.9

Chronic kidney disease, unspecified

    2016 2017 2018 2019 Billable/Specific Code
  • N18.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM N18.9 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of N18.9 - other international versions of ICD-10 N18.9 may differ.
Applicable To
  • Chronic renal disease
  • Chronic renal failure NOS
  • Chronic renal insufficiency
  • Chronic uremia NOS
  • Diffuse sclerosing glomerulonephritis NOS
The following code(s) above N18.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N18.9:
  • N00-N99
    2019 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • 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)
    Diseases of the genitourinary system
  • N17-N19
    2019 ICD-10-CM Range N17-N19

    Acute kidney failure and chronic kidney disease

    Type 2 Excludes
    • 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 (O90.4)
    • 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 (O90.4)
    • renal failure postprocedural (N99.0)
    Acute kidney failure and chronic kidney disease
  • N18
    ICD-10-CM Diagnosis Code N18

    Chronic kidney disease (CKD)

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Code First
    Use Additional
    • code to identify kidney transplant status, if applicable, (Z94.0)
    Chronic kidney disease (CKD)
Approximate Synonyms
  • Acute with chronic renal failure
  • Acute-on-chronic renal failure
  • Anemia due to chronic kidney disease
  • Anemia in chronic kidney dis
  • Anemia in kidney disease
  • Anemia of chronic renal failure
  • Arteriolar nephrosclerosis (kidney disease)
  • Benign arteriolar nephrosclerosis
  • Benign hypertensive heart and chronic renal disease
  • Benign hypertensive heart and chronic renal disease with congestive heart failure
  • Benign hypertensive heart and ckd
  • Benign hypertensive heart disease and chronic renal disease
  • Chronic kidney disease
  • Chronic kidney disease due to benign hypertension
  • Chronic kidney disease due to drug induced diabetes mellitus
  • Chronic kidney disease due to hypertension
  • Chronic kidney disease due to secondary diabetes mellitus
  • Chronic kidney disease due to type 1 diabetes mellitus
  • Chronic kidney disease due to type 2 diabetes mellitus
  • Chronic progressive renal failure
  • Chronic renal failure
  • Chronic renal failure syndrome
  • Chronic renal impairment
  • Chronic renal impairment associated with type 2 diabetes mellitus
  • Diabetes type 1 with chronic kidney disease
  • Diabetes type 2 with chronic kidney disease
  • Diabetes type 2 with kidney disease
  • Drug induced diabetes with diabetic kidney disease
  • Erythropoietin resistance in anemia of chronic kidney disease
  • Hypertension due to kidney disease in pregnancy
  • Hypertension due to to kidney disease in pregnancy
  • Hypertension in chronic kidney disease due to type 1 diabetes mellitus
  • Hypertension in chronic kidney disease due to type 2 diabetes mellitus
  • Hypertensive chronic kidney disease
  • Hypertensive heart and chronic kidney disease
  • Hypertensive heart and chronic kidney disease with congestive heart failure
  • Hypertensive heart and kidney disease
  • Hypertensive heart and kidney disease with chf
  • Hypertensive heart/kidney dis w/ congestive heart fail
  • Hypertensive kidney disease, chronic
  • Hypertensive renal disease complicating and/or reason for care during puerperium
  • Iron deficiency anemia in ckd after erythropoietin
  • Malignant arteriolar nephrosclerosis
  • Malignant htn ckd, stage 1 (gfr>= 90)
  • Malignant htn ckd, stage 2 (gfr60-89)
  • Malignant htn ckd, stage 3 (gfr30-59)
  • Malignant htn ckd, stage 4 (gfr15-29)
  • Malignant hypertensive chronic kidney disease
  • Malignant hypertensive chronic kidney disease stage 1
  • Malignant hypertensive chronic kidney disease stage 2
  • Malignant hypertensive chronic kidney disease stage 3
  • Malignant hypertensive chronic kidney disease stage 4
  • Malignant hypertensive ckd (kidney disease)
  • Malignant hypertensive heart and chronic renal disease with congestive heart failure
  • Preexisting hypertension from chronic kidney disease, after childbirth
  • Preexisting hypertensive chronic kidney disease in childbirth
  • Preexisting hypertensive chronic kidney disease in pregnancy
  • Preexisting hypertensive heart and chronic kidney disease in childbirth
  • Preexisting hypertensive heart and chronic kidney disease in postpartum
  • Preexisting hypertensive heart and chronic kidney disease in pregnancy
  • Preexisting hypertensive heart and chronic kidney disease, postpartum (after childbirth)
  • Renal insufficiency, chronic progressive
  • Secondary diabetes with chronic kidney disease
Clinical Information
  • A disorder characterized by gradual and usually permanent loss of kidney function resulting in renal failure.
  • A neoplastic or non-neoplastic condition affecting the kidney. Representative examples of non-neoplastic conditions include glomerulonephritis and nephrotic syndrome. Representative examples of neoplastic conditions include benign processes (e.g., renal lipoma and renal fibroma) and malignant processes (e.g., renal cell carcinoma and renal lymphoma).
  • A term referring to any disease affecting the kidneys.
  • An irreversible and usually progressive reduction in renal function in which both kidneys have been damaged by a variety of diseases to the extent that they are unable to adequately remove the metabolic products from the blood and regulate the body's electrolyte composition and acid-base balance. (from msh98)
  • Chronic, irreversible renal failure.
  • Gradual and usually permanent loss of kidney function resulting in renal failure. Causes include diabetes, hypertension, and glomerulonephritis.
  • Impairment of health or a condition of abnormal functioning of the kidney.
  • Impairment of the renal function due to chronic kidney damage.
  • Irreversible and usually progressive reduction in renal function in which both kidneys have been damaged by a variety of diseases to the extent that they are unable to adequately remove the metabolic products from the blood and regulate the body's electrolyte composition and acid-base balance.
  • Pathological processes of the kidney or its component tissues.
  • The end-stage of chronic renal insufficiency. It is characterized by the severe irreversible kidney damage (as measured by the level of proteinuria) and the reduction in glomerular filtration rate to less than 15 ml per min (kidney foundation: kidney disease outcome quality initiative, 2002). These patients generally require hemodialysis or kidney transplantation.
  • You have two kidneys, each about the size of your fist. Their main job is to filter wastes and excess water out of your blood to make urine. They also keep the body's chemical balance, help control blood pressure, and make hormones.chronic kidney disease (ckd) means that your kidneys are damaged and can't filter blood as they should. This damage can cause wastes to build up in your body. It can also cause other problems that can harm your health. Diabetes and high blood pressure are the most common causes of ckd.treatment may include medicines to lower blood pressure, control blood glucose, and lower blood cholesterol. Ckd can get worse over time. Ckd may lead to kidney failure. The only treatment options for kidney failure are dialysis or a kidney transplantation.you can take steps to keep your kidneys healthier longer:
    • choose foods with less salt (sodium)
    • keep your blood pressure below 130/80
    • keep your blood glucose in the target range, if you have diabetes
  • Your kidneys are two bean-shaped organs, each about the size of your fists. They are located near the middle of your back, just below the rib cage. Inside each kidney about a million tiny structures called nephrons filter blood. They remove waste products and extra water, which become urine. The urine flows through tubes called ureters to your bladder, which stores the urine until you go to the bathroom. Most kidney diseases attack the nephrons. This damage may leave kidneys unable to remove wastes. Causes can include genetic problems, injuries, or medicines. You are at greater risk for kidney disease if you have diabetes, high blood pressure, or a close family member with kidney disease. chronic kidney disease damages the nephrons slowly over several years. Other kidney problems include:
    • cancer
    • cysts
    • stones
    • infections
    your doctor can run tests to find out if you have kidney disease. If your kidneys fail completely, a kidney transplant or dialysis can replace the work your kidneys normally do.
ICD-10-CM N18.9 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 008 Simultaneous pancreas and kidney transplant
  • 673 Other kidney and urinary tract procedures with mcc
  • 674 Other kidney and urinary tract procedures with cc
  • 675 Other kidney and urinary tract procedures without cc/mcc
  • 682 Renal failure with mcc
  • 683 Renal failure with cc
  • 684 Renal failure without cc/mcc

Convert N18.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to N18.9:
  • Type 1 Excludes: N19
    , N28.9
    ICD-10-CM Diagnosis Code N19

    Unspecified kidney failure

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Uremia NOS
    Type 1 Excludes
    • acute kidney failure (N17.-)
    • chronic kidney disease (N18.-)
    • chronic uremia (N18.9)
    • extrarenal uremia (R39.2)
    • prerenal uremia (R39.2)
    • renal insufficiency (acute) (N28.9)
    • uremia of newborn (P96.0)
    ICD-10-CM Diagnosis Code N28.9

    Disorder of kidney and ureter, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Nephropathy NOS
    • Renal disease (acute) NOS
    • Renal insufficiency (acute)
    Type 1 Excludes
    • chronic renal insufficiency (N18.9)
    • unspecified nephritic syndrome (N05.-)
  • Use Additional: I13.10
    , I12.9
    ICD-10-CM Diagnosis Code I13.10

    Hypertensive heart and chronic kidney disease without heart failure, with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Hypertensive heart disease and hypertensive chronic kidney disease NOS
    Use Additional
    ICD-10-CM Diagnosis Code I12.9

    Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Hypertensive chronic kidney disease NOS
    • Hypertensive renal disease NOS
    Use Additional

Diagnosis Index entries containing back-references to N18.9:
  • Apoplexia, apoplexy, apoplectic
    • uremic N18.9
  • Disease, diseased - see also Syndrome
    • kidney (functional) (pelvis) N28.9
      ICD-10-CM Diagnosis Code N28.9

      Disorder of kidney and ureter, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Nephropathy NOS
      • Renal disease (acute) NOS
      • Renal insufficiency (acute)
      Type 1 Excludes
      • chronic renal insufficiency (N18.9)
      • unspecified nephritic syndrome (N05.-)
    • renal (functional) (pelvis) N28.9
      - see also Disease, kidney
      ICD-10-CM Diagnosis Code N28.9

      Disorder of kidney and ureter, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Nephropathy NOS
      • Renal disease (acute) NOS
      • Renal insufficiency (acute)
      Type 1 Excludes
      • chronic renal insufficiency (N18.9)
      • unspecified nephritic syndrome (N05.-)
      • chronic N18.9 - see also Disease, kidney, chronic
  • Failure, failed
    • renal N19
      ICD-10-CM Diagnosis Code N19

      Unspecified kidney failure

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Uremia NOS
      Type 1 Excludes
      • acute kidney failure (N17.-)
      • chronic kidney disease (N18.-)
      • chronic uremia (N18.9)
      • extrarenal uremia (R39.2)
      • prerenal uremia (R39.2)
      • renal insufficiency (acute) (N28.9)
      • uremia of newborn (P96.0)
  • Glomerulonephritis N05.9
    - see also Nephritis
    ICD-10-CM Diagnosis Code N05.9

    Unspecified nephritic syndrome with unspecified morphologic changes

      2016 2017 2018 2019 Billable/Specific Code
    • diffuse
      • sclerosing N18.9
    • sclerosing, diffuse N18.9
  • Insufficiency, insufficient
    • kidney N28.9
      ICD-10-CM Diagnosis Code N28.9

      Disorder of kidney and ureter, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Nephropathy NOS
      • Renal disease (acute) NOS
      • Renal insufficiency (acute)
      Type 1 Excludes
      • chronic renal insufficiency (N18.9)
      • unspecified nephritic syndrome (N05.-)
      • chronic N18.9
    • renal (acute) N28.9
      ICD-10-CM Diagnosis Code N28.9

      Disorder of kidney and ureter, unspecified

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Nephropathy NOS
      • Renal disease (acute) NOS
      • Renal insufficiency (acute)
      Type 1 Excludes
      • chronic renal insufficiency (N18.9)
      • unspecified nephritic syndrome (N05.-)
      • chronic N18.9
  • Neuropathy, neuropathic G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Neuropathy NOS
    • uremic N18.9
  • Paralysis, paralytic (complete) (incomplete) G83.9
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    • uremic N18.9
  • Pericarditis (with decompensation) (with effusion) I31.9
    ICD-10-CM Diagnosis Code I31.9

    Disease of pericardium, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Pericarditis (chronic) NOS
    • uremic N18.9
  • Polyneuropathy (peripheral) G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Neuropathy NOS
    • transthyretin-related (ATTR) E85.1
      ICD-10-CM Diagnosis Code E85.1

      Neuropathic heredofamilial amyloidosis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Amyloid polyneuropathy (Portuguese)
      • Transthyretin-related (ATTR) familial amyloid polyneuropathy
      • uremia N18.9
  • Retinitis - see also Inflammation, chorioretinal
    • albuminurica N18.9
    • renal N18.9
  • Syndrome - see also Disease
    • uremia, chronic N18.9 - see also Disease, kidney, chronic
  • Uremia, uremic N19
    ICD-10-CM Diagnosis Code N19

    Unspecified kidney failure

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Uremia NOS
    Type 1 Excludes
    • acute kidney failure (N17.-)
    • chronic kidney disease (N18.-)
    • chronic uremia (N18.9)
    • extrarenal uremia (R39.2)
    • prerenal uremia (R39.2)
    • renal insufficiency (acute) (N28.9)
    • uremia of newborn (P96.0)
    • with
      • polyneuropathy N18.9
    • chronic NOS N18.9 - see also Disease, kidney, chronic

ICD-10-CM Codes Adjacent To N18.9
N17.2 Acute kidney failure with medullary necrosis
N17.8 Other acute kidney failure
N17.9 Acute kidney failure, unspecified
N18 Chronic kidney disease (CKD)
N18.1 Chronic kidney disease, stage 1
N18.2 Chronic kidney disease, stage 2 (mild)
N18.3 Chronic kidney disease, stage 3 (moderate)
N18.4 Chronic kidney disease, stage 4 (severe)
N18.5 Chronic kidney disease, stage 5
N18.6 End stage renal disease
N18.9 Chronic kidney disease, unspecified
N19 Unspecified kidney failure
N20 Calculus of kidney and ureter
N20.0 Calculus of kidney
N20.1 Calculus of ureter
N20.2 Calculus of kidney with calculus of ureter
N20.9 Urinary calculus, unspecified
N21 Calculus of lower urinary tract
N21.0 Calculus in bladder
N21.1 Calculus in urethra
N21.8 Other lower urinary tract calculus

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.