ICD-10-CM Code N18.9

Chronic kidney disease, unspecified

Version 2020 Billable Code

Valid for Submission

N18.9 is a billable code used to specify a medical diagnosis of chronic kidney disease, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code N18.9 might also be used to specify conditions or terms like acute-on-chronic renal failure, anemia in chronic kidney disease, anemia of chronic disease, anemia of chronic renal failure, anemia of renal disease, anemia secondary to renal failure, etc

ICD-10:N18.9
Short Description:Chronic kidney disease, unspecified
Long Description:Chronic kidney disease, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code N18.9:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Chronic renal disease
  • Chronic renal failure NOS
  • Chronic renal insufficiency
  • Chronic uremia NOS
  • Diffuse sclerosing glomerulonephritis NOS

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code N18.9 are found in the index:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acute-on-chronic renal failure
  • Anemia in chronic kidney disease
  • Anemia of chronic disease
  • Anemia of chronic renal failure
  • Anemia of renal disease
  • Anemia secondary to renal failure
  • Anemia, pre-end stage renal disease on erythropoietin protocol
  • Arteriolar nephritis
  • Arteriolar nephrosclerosis
  • Benign arteriolar nephrosclerosis
  • Benign hypertensive heart AND renal disease
  • Benign hypertensive heart disease
  • Benign hypertensive heart disease
  • Benign hypertensive heart disease and chronic renal disease
  • Benign hypertensive renal disease
  • Cardiorenal syndrome
  • Cardiovascular renal disease
  • Chronic hypertensive uremia
  • Chronic kidney disease
  • Chronic kidney disease due to benign hypertension
  • Chronic kidney disease due to hypertension
  • Chronic kidney disease due to systemic infection
  • Chronic kidney disease due to traumatic loss of kidney
  • Chronic kidney disease due to type 1 diabetes mellitus
  • Chronic kidney disease due to type 1 diabetes mellitus
  • Chronic kidney disease due to type 2 diabetes mellitus
  • Chronic kidney disease following donor nephrectomy
  • Chronic kidney disease following excision of renal neoplasm
  • Chronic kidney disease mineral and bone disorder
  • Chronic renal failure
  • Chronic renal failure
  • Chronic renal insufficiency
  • Deficiency of alkaline phosphatase
  • Drug resistance
  • Erythropoietin resistance in anemia of chronic kidney disease
  • Hypertension complicating pregnancy, childbirth and the puerperium
  • Hypertension in chronic kidney disease due to type 1 diabetes mellitus
  • Hypertension in chronic kidney disease due to type 2 diabetes mellitus
  • Hypertension secondary to renal disease complicating AND/OR reason for care during puerperium
  • Hypertension secondary to renal disease in obstetric context
  • Hypertensive heart and chronic kidney disease
  • Hypertensive heart and chronic kidney disease
  • Hypertensive heart and chronic kidney disease
  • Hypertensive heart AND chronic kidney disease on dialysis
  • Hypertensive heart AND chronic kidney disease with congestive heart failure
  • Hypertensive heart AND renal disease
  • Hypertensive heart AND renal disease complicating AND/OR reason for care during childbirth
  • Hypertensive heart AND renal disease complicating AND/OR reason for care during pregnancy
  • Hypertensive heart AND renal disease in obstetric context
  • Hypertensive heart AND renal disease in obstetric context
  • Hypertensive heart AND renal disease in obstetric context
  • Hypertensive heart and renal disease with heart failure
  • Hypertensive heart and renal disease with heart failure
  • Hypertensive heart disease complicating AND/OR reason for care during childbirth
  • Hypertensive heart disease in obstetric context
  • Hypertensive heart disease in obstetric context
  • Hypertensive heart disease in obstetric context
  • Hypertensive nephrosclerosis
  • Hypertensive renal disease
  • Hypertensive renal disease complicating AND/OR reason for care during childbirth
  • Hypertensive renal disease complicating AND/OR reason for care during pregnancy
  • Hypertensive renal disease in obstetric context
  • Hypertensive renal disease in obstetric context
  • Light chain nephropathy
  • Low alkaline phosphatase due to chronic kidney disease
  • Malignant arteriolar nephrosclerosis
  • Malignant hypertensive heart AND renal disease
  • Malignant hypertensive heart disease
  • Nephrosclerosis
  • Neuropathy in renal failure
  • Parenchymal renal hypertension
  • Pericarditis due to metabolic disease
  • Pericarditis secondary to uremia
  • Pre-existing hypertensive chronic kidney disease in mother complicating pregnancy
  • Pre-existing hypertensive heart and chronic kidney disease in mother complicating childbirth
  • Pre-existing hypertensive heart and chronic kidney disease in mother complicating pregnancy
  • Pre-existing hypertensive heart and renal disease complicating pregnancy, childbirth and the puerperium
  • Pre-existing hypertensive heart disease in mother complicating pregnancy
  • Recurrent post-transplant renal disease
  • Renal hypertension
  • Renal hypertension complicating pregnancy, childbirth and the puerperium
  • Renal hypertension complicating pregnancy, childbirth and the puerperium - delivered with postnatal complication
  • Renal hypertension complicating pregnancy, childbirth and the puerperium with postnatal complication
  • Renal insufficiency
  • Renal involvement in malignant disease
  • Sclerosing glomerulonephritis
  • Toxic polyneuropathy
  • Uremic neuropathy
  • Uremic polyneuropathy

Clinical Information

  • CHRONIC KIDNEY DISEASE MINERAL AND BONE DISORDER-. decalcification of bone or abnormal bone development due to chronic kidney diseases in which 125 dihydroxyvitamin d3 synthesis by the kidneys is impaired leading to reduced negative feedback on parathyroid hormone. the resulting secondary hyperparathyroidism eventually leads to bone disorders.
  • RENAL INSUFFICIENCY CHRONIC-. conditions in which the kidneys perform below the normal level for more than three months. chronic kidney insufficiency is classified by five stages according to the decline in glomerular filtration rate and the degree of kidney damage as measured by the level of proteinuria. the most severe form is the end stage renal disease chronic kidney failure. kidney foundation: kidney disease outcome quality initiative 2002

Convert N18.9 to ICD-9

  • 585.9 - Chronic kidney dis NOS

Code Classification

  • Diseases of the genitourinary system (N00–N99)
    • Acute kidney failure and chronic kidney disease (N17-N19)
      • Chronic kidney disease (N18) (CKD)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Chronic Kidney Disease

You have two kidneys, each about the size of your fist. Their main job is to filter your blood. They remove wastes and extra water, which become urine. They also keep the body's chemicals balanced, 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.

The kidney damage occurs slowly over many years. Many people don't have any symptoms until their kidney disease is very advanced. Blood and urine tests are the only way to know if you have kidney disease.

Treatments cannot cure kidney disease, but they may slow kidney disease. They include medicines to lower blood pressure, control blood sugar, and lower cholesterol. CKD may still get worse over time. Sometimes it can lead to kidney failure. If your kidneys fail, you will need dialysis or a kidney transplantation.

You can take steps to keep your kidneys healthier longer:

  • Choose foods with less salt (sodium)
  • Control your blood pressure; your health care provider can tell you what your blood pressure should be
  • Keep your blood sugar in the target range, if you have diabetes
  • Limit the amount of alcohol you drink
  • Choose foods that are healthy for your heart: fruits, vegetables, whole grains, and low-fat dairy foods
  • Lose weight if you are overweight
  • Be physically active
  • Don't smoke

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


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