What is the ICD-10 code for acute on chronic kidney injury?

The ICD-10 code for acute on chronic kidney injury typically involves N17.9 for acute kidney failure and an appropriate N18.x code for the chronic kidney disease stage.

How do you document acute on chronic kidney injury?

Document acute on chronic kidney injury by specifying baseline and current creatinine levels, urine output, and clearly stating 'acute on chronic' in the medical record.

ICD-10 Coding for Acute on Chronic Kidney Injury(N17.9, E11.22, I12.9)

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Learn about the ICD-10 coding for acute on chronic kidney injury, including documentation requirements and common coding pitfalls.

Also known as:

Acute on Chronic Renal FailureAcute on Chronic Kidney Disease

Related ICD-10 Code Ranges

Complete code families applicable to Acute on Chronic Kidney Injury

N00-N99Primary Range

Diseases of the genitourinary system

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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
N17.9	Acute kidney failure, unspecified	Use when acute kidney injury is present without further specification.	Serum creatinine increase ≥0.3 mg/dL within 48 hours Urine output <0.5 mL/kg/h for 6 hours
N18.4	Chronic kidney disease, stage 4 (severe)	Use to specify stage 4 CKD when documented.	GFR 15-29 mL/min/1.73 m²

Primary ICD-10-CM Codes

Acute kidney failure, unspecified

N17.9Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Chronic kidney disease, unspecifiedN18.9

Chronic kidney disease, stage 3 (moderate)N18.3

Documentation & Coding Risks

Avoid these common issues when documenting Acute on Chronic Kidney Injury.

Failing to document the chronic component of kidney injury

Impact

Clinical: Inaccurate representation of patient condition., Regulatory: Non-compliance with coding standards., Financial: Potential for reduced reimbursement.

Mitigation

Ensure documentation includes both acute and chronic aspects., Use templates to guide comprehensive documentation.

Coding only N18.6 for ESRD with AKI

Impact

Reimbursement: Incomplete coding may lead to lower reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate data representation of patient condition.

Mitigation

Code N17.9 + N18.6 + Z99.2 to capture both acute and chronic components.

Incomplete documentation of kidney injury

Impact

Risk of audits due to missing documentation of chronic component.

Mitigation

Use comprehensive templates and ensure all clinical indicators are documented.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with N17.9.

Primary Code

N17.9

Acute kidney failure, unspecified

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ICD-10 codes8

Coding risks3

FAQs2

ICD-10 Coding for Acute on Chronic Kidney Injury(N17.9, E11.22, I12.9)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for acute on chronic kidney injury?

How do you document acute on chronic kidney injury?

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