AKI ICD-10-CM Codes

AKI ICD-10-CM Codes

Explore the ICD-10-CM codes for AKI in 2023. Learn about billable codes, clinical descriptions, synonyms, and more in this comprehensive guide.

By Telita Montales on Jul 15, 2025.

Fact Checked by RJ Gumban.

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What ICD-10 Codes are Used for Acute Kidney Injury (AKI)?

Acute Kidney Injury (AKI), commonly known as acute renal failure, refers to the abrupt loss of kidney function. Accurate ICD-10-CM codes are essential for medical billing and documentation. Below are 7 commonly used codes for AKI:

N17.0 - Acute kidney failure with tubular necrosis: AKI caused by tubular necrosis, often due to ischemia or nephrotoxic agents.

N17.1 - Acute kidney failure with acute cortical necrosis: AKI caused by acute cortical necrosis, typically arising from severe ischemia or vascular disorders.

N17.2 - Acute kidney failure with medullary necrosis: AKI caused by medullary necrosis, often resulting from sickle cell disease or ischemic injury.

N17.8 - Other acute kidney failure: This code covers cases of AKI not classified under the previously mentioned codes.

N17.9 - Acute kidney failure, unspecified: Used when specific details about the cause of AKI are not available or documented.

N99.0 - Postprocedural (acute) (transient) renal failure: AKI occurring as a complication of a medical procedure.

R34.0 - Anuria: Denotes complete absence of urine output, which can be a symptom of AKI.

Which AKI ICD codes are Billable?

The following ICD-10-CM codes for Acute Kidney Injury (AKI) are billable:

N17.0 - Yes, billable: Reimbursement is available for cases of AKI with tubular necrosis when documented appropriately.

N17.1 - Yes, billable: Cases of AKI with acute cortical necrosis are eligible for reimbursement upon accurate coding.

‍N17.2 - Yes, billable: Reimbursement is applicable for AKI cases with medullary necrosis, provided the documentation is precise.

N17.8 - Yes, billable: Other specific types of AKI can be billed with this code when supported by medical records.

N17.9 - Yes, billable: AKI cases lacking detailed information can still be billed under this unspecified code.

N99.0 - Yes, billable: AKI arising as a postprocedural complication is eligible for reimbursement.

R34.0 - No, not billable: Code R34.0 represents anuria, a symptom of AKI, but it is not eligible for billing.

Clinical Information

  • Acute kidney injury (AKI), also known as acute renal failure, is a sudden and rapid decline in kidney function.
  • Common causes include dehydration, kidney infections, urinary tract obstruction, medications, and conditions affecting blood flow to the kidneys.
  • Symptoms may include decreased urine output, swelling, fatigue, confusion, and nausea.
  • Diagnosis is based on blood and urine tests to assess kidney function and determine the underlying cause.
  • AKI can be categorized into three stages: prerenal, intrinsic renal, and postrenal, based on the location of the problem.
  • Treatment aims to address the underlying cause, support kidney function, and manage complications.
  • In severe cases, temporary dialysis may be required to assist kidney function until recovery occurs.
  • AKI requires close monitoring and timely intervention to prevent further kidney damage.
  • Prognosis depends on the cause, severity, and promptness of treatment.
  • Preventive measures include managing risk factors, staying hydrated, and using medications cautiously under medical supervision.

Synonyms Include

  • Acute Renal Failure
  • Rapid Kidney Dysfunction
  • Abrupt Renal Impairment
  • Acute Kidney Damage
  • Acute Renal Insufficiency
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