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ICD-10 Coding for Ureterolithiasis(N20.1, N13.2)

Complete ICD-10-CM coding and documentation guide for Ureterolithiasis. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Ureteral stoneUreteral calculus

Related ICD-10 Code Ranges

Complete code families applicable to Ureterolithiasis

N20-N23Primary Range

Calculus of kidney and ureter

This range includes codes for stones in the kidney and ureter, specifically addressing ureterolithiasis.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
N20.1Calculus of ureterUse when a stone is confirmed in the ureter without hydronephrosis.
  • Imaging confirmation of stone in ureter
  • Symptoms such as flank pain and hematuria
N13.2Hydronephrosis with ureteral obstructionUse when hydronephrosis is present due to ureteral obstruction.
  • Imaging showing hydronephrosis and obstruction
  • Symptoms of obstruction

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for ureterolithiasis

Essential facts and insights about Ureterolithiasis

The ICD-10 code for ureterolithiasis is N20.1, used for stones located in the ureter.

Primary ICD-10-CM Codes for ureterolithiasis

Calculus of ureter
Billable Code

Decision Criteria

clinical Criteria

  • Presence of ureteral stone confirmed by imaging

documentation Criteria

  • Laterality and specific location within the ureter

Applicable To

  • Ureteral stone
  • Ureteral calculus

Excludes

  • N13.2 - Hydronephrosis with ureteral obstruction

Clinical Validation Requirements

  • Imaging confirmation of stone in ureter
  • Symptoms such as flank pain and hematuria

Code-Specific Risks

  • Incorrectly coding as N20.0 (kidney stone)
  • Omitting laterality

Coding Notes

  • Ensure laterality is documented and confirmed by imaging.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Gross hematuria

R31.0
Use as a secondary code if hematuria is present.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Calculus of kidney with calculus of ureter

N20.2
Use when stones are present in both the kidney and ureter.

Calculus of ureter

N20.1
Use N20.1 if no hydronephrosis is present.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Ureterolithiasis to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code N20.1.

Impact

Clinical: May lead to incorrect treatment side., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation Strategy

Use templates that prompt for laterality, Regular audits of documentation

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Violates Excludes1 note in ICD-10., Data Quality: Leads to inaccurate clinical data.

Mitigation Strategy

Use N13.2 alone if hydronephrosis is present.

Impact

Using N20.1 and N13.2 together despite Excludes1 note.

Mitigation Strategy

Educate coders on Excludes1 notes and proper code selection.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Ureterolithiasis, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Ureterolithiasis

Use these documentation templates to ensure complete and accurate documentation for Ureterolithiasis. These templates include all required elements for proper coding and billing.

Emergency Department Visit for Ureterolithiasis

Specialty: Emergency Medicine

Required Elements

  • Chief complaint
  • History of present illness
  • Imaging results
  • Treatment plan

Example Documentation

**HPI**: 45-year-old male with acute right flank pain, onset 2 hours ago. **Imaging**: CT shows 5mm stone in right ureter. **Plan**: Pain management and urology consult.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has kidney stone.
Good Documentation Example
CT confirms 5mm stone in right ureter causing moderate hydronephrosis.
Explanation
Specifies location and complication, improving specificity.

Need help with ICD-10 coding for Ureterolithiasis? Ask your questions below.

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