ICD-10-CM Code N99.0

Postprocedural (acute) (chronic) kidney failure

Version 2020 Billable Code

Valid for Submission

N99.0 is a billable code used to specify a medical diagnosis of postprocedural (acute) (chronic) kidney failure. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code N99.0 might also be used to specify conditions or terms like acute postoperative renal failure, acute renal cortical necrosis, acute renal failure due to procedure, acute tubular necrosis, anuria as a complication of care, oliguria as a complication of care, etc

Short Description:Postprocedural (acute) (chronic) kidney failure
Long Description:Postprocedural (acute) (chronic) kidney failure

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 N99.0:

Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code to type of kidney disease

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 N99.0 are found in the index:


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

  • Acute postoperative renal failure
  • Acute renal cortical necrosis
  • Acute renal failure due to procedure
  • Acute tubular necrosis
  • Anuria as a complication of care
  • Oliguria as a complication of care
  • Oliguria OR anuria due to procedure
  • Postoperative acute tubular necrosis
  • Postoperative renal failure
  • Renal complication of procedure
  • Renal failure as a complication of care
  • Urinary complications of care
  • Urinary complications of care
  • Urinary complications of care

Diagnostic Related Groups

The ICD-10 code N99.0 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert N99.0 to ICD-9

  • 997.5 - Surg compl-urinary tract (Approximate Flag)

Code Classification

  • Diseases of the genitourinary system (N00–N99)
    • Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified (N99)
      • Intraop and postproc comp and disorders of GU sys, NEC (N99)

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

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. Your body may retain excess fluid and not make enough red blood cells. This is called kidney failure.

If your kidneys fail, you need treatment to replace the work they normally do. The treatment options are dialysis or a kidney transplant. Each treatment has benefits and drawbacks. No matter which treatment you choose, you'll need to make some changes in your life, including how you eat and plan your activities. But with the help of health care providers, family, and friends, most people with kidney failure can lead full and active lives.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

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