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Home/Diagnosis/ICD-10 Coding for Hydronephrosis

ICD-10 Coding for Hydronephrosis

N13.30
N13.2
N13.6

Complete ICD-10-CM coding and documentation guide for icd-10 coding for hydronephrosis includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Renal Pelvis Dilation
Kidney Swelling
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Key Information: ICD-10 Coding for Hydronephrosis

Essential facts and insights about ICD-10 Coding for Hydronephrosis

Use ICD-10 code N13.30 for unspecified hydronephrosis, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Unspecified hydronephrosis

Billable Code
N13.30
Billable

Diagnostic Criteria

  • • Imaging shows renal pelvis dilation without obstruction.

Applicable To

  • • Hydronephrosis without specific cause

Important Notes

  • • Ensure imaging confirms hydronephrosis before using this code.

Hydronephrosis with renal and ureteral calculous obstruction

Billable Code
N13.2
Billable

Diagnostic Criteria

  • • CT scan showing stone causing obstruction

Applicable To

  • • Hydronephrosis due to kidney stones

Important Notes

  • • Ensure documentation specifies the stone and its location.

Pyonephrosis

Billable Code
N13.6
Billable

Diagnostic Criteria

  • • Imaging showing pus in renal pelvis
  • • Positive urine culture

Applicable To

  • • Infection in obstructed kidney

Important Notes

  • • Ensure infection is documented with lab results.

Congenital hydronephrosis

Billable Code
Q62.0
Billable

Diagnostic Criteria

  • • Prenatal ultrasound showing hydronephrosis

Applicable To

  • • Prenatal hydronephrosis

Important Notes

  • • Ensure documentation specifies congenital nature.
Ancillary Codes

Additional codes that may be used with this diagnosis

R10.9

Unspecified abdominal pain

Use when abdominal pain is present alongside hydronephrosis.

N20.1

Calculus of ureter

Use to specify the presence of ureteral stones.

B96.2

Escherichia coli [E. coli] as the cause of diseases classified elsewhere

Use to specify the infectious agent.

Frequently Asked Questions

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.

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