What is the ICD-10 code for low urine output?

The ICD-10 code for low urine output is R34, used when a definitive diagnosis like AKI is not established.

How is acute kidney injury coded in ICD-10?

Acute kidney injury is coded as N17.9 in ICD-10, requiring documentation of specific urine output and creatinine changes.

ICD-10 Coding for Low Urine Output(N17.9, N28.9)

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Explore ICD-10 coding for low urine output, including acute kidney injury, with detailed documentation requirements and coding tips.

Also known as:

OliguriaAnuria

Related ICD-10 Code Ranges

Complete code families applicable to Low Urine Output

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 AKI is diagnosed based on clinical criteria.	Creatinine increase ≥0.3 mg/dL or ≥200% from baseline Urine output <0.5 ml/kg/hr for ≥6 hours
R34	Anuria and Oliguria	Use when low urine output is documented but does not meet AKI criteria.	Urine output <400 mL/day in adults
N28.9	Disorder of kidney and ureter, unspecified	Use when kidney disorder is unspecified and AKI cannot be confirmed.	Vague terms like 'renal insufficiency' without AKI criteria

Primary ICD-10-CM Codes

Acute kidney failure, unspecified

N17.9Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Disorder of kidney and ureter, unspecifiedN28.9

Use when AKI criteria are not met and the condition is unspecified.

Acute kidney failure, unspecifiedN17.9

Documentation & Coding Risks

Avoid these common issues when documenting Low Urine Output.

Documenting 'renal insufficiency' without specifying AKI.

Impact

Clinical: May lead to inadequate treatment planning., Regulatory: Non-compliance with coding standards., Financial: Potential under-coding affecting reimbursement.

Mitigation

Use specific terms like 'acute kidney injury'., Ensure documentation meets AKI criteria.

Using R34 as a principal diagnosis when AKI is present.

Impact

Reimbursement: Incorrect DRG assignment, potentially lower reimbursement., Compliance: Non-compliance with ICD-10 guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Code N17.9 first, R34 as secondary.

AKI Coding

Impact

Risk of misclassification if documentation does not meet criteria.

Mitigation

Regular training on AKI documentation requirements.

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 Coding for Low Urine Output(N17.9, N28.9)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for low urine output?

How is acute kidney injury coded in ICD-10?

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