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ICD-10 Coding for Bilateral Nephrolithiasis(N20.2, N13.2, N21.1)

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Learn about the ICD-10 coding for bilateral nephrolithiasis, including when to use N20.2 and N13.2, documentation requirements, and common coding pitfalls.

Also known as:
Bilateral Kidney StonesBilateral Renal Calculi
Related ICD-10 Code Ranges

Complete code families applicable to Bilateral Nephrolithiasis

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

CodeDescription
N20.2Calculus of kidney and ureter, bilateral
N13.2Hydronephrosis with renal and ureteral calculous obstruction
Primary ICD-10-CM Codes
Calculus of kidney with calculus of ureter
N20.2Billable
Differential Codes

Alternative codes to consider when ruling out similar conditions

Hydronephrosis with renal and ureteral calculous obstructionN13.2
Calculus of kidney and ureter, bilateralN20.2

Documentation & Coding Risks

Avoid these common issues when documenting Bilateral Nephrolithiasis.

Failing to document hydronephrosis

Impact

Clinical: Misrepresentation of patient condition., Regulatory: Potential audit issues., Financial: Denied claims due to incorrect coding.

Mitigation

Always review imaging for hydronephrosis., Clarify with provider if documentation is unclear.

Using N20.2 with hydronephrosis present

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with ICD-10 guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Use N13.2 if hydronephrosis is documented.

Hydronephrosis coding

Impact

Incorrect coding of hydronephrosis with stones.

Mitigation

Ensure clear documentation of hydronephrosis and obstruction.

Frequently Asked Questions

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with N20.2.