What is the ICD-10 code for hydronephrosis?

The ICD-10 code for unspecified hydronephrosis is N13.30. For hydronephrosis due to calculous obstruction, use N13.2. If infection is present, use N13.6.

How is congenital hydronephrosis coded?

Congenital hydronephrosis is coded as Q62.0 in ICD-10. This code is used for cases identified prenatally or in early childhood.

ICD-10 Coding for Hydronephrosis(N13.30, B96.2, N13.0)

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Comprehensive guide to ICD-10 coding for hydronephrosis, including code ranges, documentation requirements, and common pitfalls.

Also known as:

Renal Pelvis DilationKidney Swelling

Related ICD-10 Code Ranges

Complete code families applicable to Hydronephrosis

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
N13.30	Unspecified hydronephrosis	Use when hydronephrosis is confirmed but the cause is not specified or known.	Imaging evidence of renal pelvis dilation without identifiable cause
N13.2	Hydronephrosis with renal and ureteral calculous obstruction	Use when hydronephrosis is caused by a calculous obstruction confirmed by imaging.	CT scan showing stone causing obstruction
N13.6	Pyonephrosis	Use when hydronephrosis is complicated by infection, confirmed by imaging and lab tests.	Imaging showing pus in renal pelvis Positive urine culture
Q62.0	Congenital hydronephrosis	Use for congenital cases identified in prenatal or early childhood.	Prenatal ultrasound showing hydronephrosis

Primary ICD-10-CM Codes

Unspecified hydronephrosis

N13.30Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Congenital hydronephrosisQ62.0

PyonephrosisN13.6

Hydronephrosis with calculous obstructionN13.2

Unspecified hydronephrosisN13.30

Documentation & Coding Risks

Avoid these common issues when documenting Hydronephrosis.

Failing to document infection in pyonephrosis

Impact

Clinical: Inaccurate treatment plans, Regulatory: Non-compliance with coding standards, Financial: Potential denial of claims

Mitigation

Ensure lab results are reviewed and documented, Query providers for missing information

Using N13.30 for hydronephrosis with known cause

Impact

Reimbursement: Potential underpayment due to lack of specificity., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate data affecting clinical statistics.

Mitigation

Specify the cause and use the appropriate code, such as N13.2 for stone-related obstruction.

Use of unspecified codes

Impact

High risk of audit if unspecified codes are used without supporting documentation.

Mitigation

Ensure all documentation supports the specificity of the code used.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with N13.30.

Primary Code

N13.30

Unspecified hydronephrosis

Quick Navigation

ICD-10 codes10

Coding risks3

FAQs2

ICD-10 Coding for Hydronephrosis(N13.30, B96.2, N13.0)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for hydronephrosis?

How is congenital hydronephrosis coded?

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