What is the ICD-10 code for acute renal insufficiency?

Acute renal insufficiency is typically coded as R94.4 for abnormal kidney function tests unless criteria for acute kidney injury (AKI) are met, in which case N17.9 may be used.

When should R94.4 be used instead of N17.9?

Use R94.4 when lab results show mild renal dysfunction without meeting AKI criteria, such as a creatinine increase of less than 1.5x baseline.

ICD-10 Coding for Acute Renal Insufficiency(R94.4, E86.0, N17.9)

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Learn about ICD-10 coding for acute renal insufficiency, including code R94.4 for abnormal kidney function and when to use N17.9 for acute kidney injury.

Also known as:

Acute Kidney InsufficiencyRenal Insufficiency

Related ICD-10 Code Ranges

Complete code families applicable to Acute Renal Insufficiency

R00-R99Primary Range

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
R94.4	Abnormal kidney function tests	Use when lab results indicate mild renal dysfunction without meeting AKI criteria.	Creatinine increase <1.5x baseline No oliguria
N17.9	Acute kidney failure, unspecified	Use when AKI criteria are met, indicating significant renal impairment.	Creatinine increase ≥1.5x baseline Oliguria <0.5 mL/kg/hr for 6 hours

Primary ICD-10-CM Codes

Abnormal results of kidney function studies

R94.4Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Acute kidney failure, unspecifiedN17.9

Abnormal kidney function testsR94.4

Documentation & Coding Risks

Avoid these common issues when documenting Acute Renal Insufficiency.

Lack of specific lab documentation

Impact

Clinical: May lead to misdiagnosis or inappropriate treatment., Regulatory: Increases risk of audit findings., Financial: Potential for incorrect billing and reimbursement.

Mitigation

Ensure lab results are included in documentation, Clarify clinical context and treatment response

Confusing acute renal insufficiency with acute kidney injury

Impact

Reimbursement: Incorrect coding may lead to inappropriate DRG assignment., Compliance: Misclassification can result in audit issues., Data Quality: Affects accuracy of clinical data and outcomes tracking.

Mitigation

Verify lab values and clinical context to ensure correct code selection.

Documentation accuracy

Impact

Inaccurate documentation can lead to coding errors and audit findings.

Mitigation

Implement thorough documentation practices and regular audits.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with R94.4.

Primary Code

R94.4

Abnormal results of kidney function studies

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ICD-10 Coding for Acute Renal Insufficiency(R94.4, E86.0, N17.9)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for acute renal insufficiency?

When should R94.4 be used instead of N17.9?

Related condition guides