ICD-10-CM Code N18.4

Chronic kidney disease, stage 4 (severe)

Version 2020 Billable Code

Valid for Submission

N18.4 is a billable code used to specify a medical diagnosis of chronic kidney disease, stage 4 (severe). The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code N18.4 might also be used to specify conditions or terms like anemia in chronic kidney disease stage 4, benign hypertensive heart disease, benign hypertensive heart disease and chronic renal disease, benign hypertensive heart disease and chronic renal disease stage 4, chronic kidney disease due to benign hypertension, chronic kidney disease due to type 1 diabetes mellitus, etc

ICD-10:N18.4
Short Description:Chronic kidney disease, stage 4 (severe)
Long Description:Chronic kidney disease, stage 4 (severe)

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 N18.4 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:

  • Anemia in chronic kidney disease stage 4
  • Benign hypertensive heart disease
  • Benign hypertensive heart disease and chronic renal disease
  • Benign hypertensive heart disease and chronic renal disease stage 4
  • Chronic kidney disease due to benign hypertension
  • Chronic kidney disease due to type 1 diabetes mellitus
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4
  • Chronic kidney disease stage 4 due to benign hypertension
  • Chronic kidney disease stage 4 due to hypertension
  • Chronic kidney disease stage 4 due to type 1 diabetes mellitus
  • Chronic kidney disease stage 4 due to type 2 diabetes mellitus
  • Chronic kidney disease stage 4 due to type 2 diabetes mellitus
  • Hypertension in chronic kidney disease due to type 2 diabetes mellitus
  • Hypertension in chronic kidney disease stage 4 due to type 2 diabetes mellitus
  • Hypertensive heart and chronic kidney disease
  • Hypertensive heart AND chronic kidney disease stage 4
  • Malignant hypertensive chronic kidney disease
  • Malignant hypertensive chronic kidney disease stage 4
  • Malignant hypertensive heart disease
  • Malignant hypertensive heart disease and chronic renal disease stage 4

Convert N18.4 to ICD-9

  • 585.4 - Chr kidney dis stage IV

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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