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ICD-10 Guide
ICD-10 CodesN13.721

N13.721

Billable

Vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N13.721 is a billable code used to indicate a diagnosis of vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral.

Key Diagnostic Point:

Vesicoureteral reflux (VUR) is a condition where urine flows backward from the bladder into the ureters and potentially the kidneys. This backward flow can lead to recurrent urinary tract infections (UTIs) and subsequent kidney damage, known as reflux nephropathy. In cases where VUR is unilateral, only one kidney is affected, which can lead to complications such as pyelonephritis, interstitial nephritis, and, in severe cases, renal scarring. The absence of hydroureter indicates that the ureter is not dilated, which can help differentiate this condition from other forms of urinary obstruction. Patients may present with symptoms of UTI, flank pain, or fever due to pyelonephritis. Management often includes antibiotic prophylaxis to prevent infections, and in some cases, surgical intervention may be necessary to correct the reflux. Understanding the nuances of this condition is crucial for accurate coding and effective patient management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between unilateral and bilateral reflux nephropathy
  • Identifying the presence or absence of hydroureter
  • Understanding the implications of associated conditions like pyelonephritis
  • Navigating antibiotic management protocols

Audit Risk Factors

  • Inadequate documentation of reflux severity
  • Failure to document recurrent UTIs
  • Misclassification of unilateral vs. bilateral conditions
  • Lack of clarity on antibiotic management

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed history of urinary symptoms, growth and development assessments, and family history of urinary conditions.

Common Clinical Scenarios

Children presenting with recurrent UTIs, abdominal pain, or fever.

Billing Considerations

Consideration of age-related factors in diagnosis and treatment, as well as the potential for surgical intervention.

Urology

Documentation Requirements

Comprehensive evaluation of urinary tract anatomy, imaging studies, and surgical history.

Common Clinical Scenarios

Adult patients with a history of VUR presenting with renal impairment or recurrent infections.

Billing Considerations

Focus on surgical options for correction of reflux and long-term management of nephropathy.

Coding Guidelines

Inclusion Criteria

Use N13.721 When
  • According to ICD
  • 10 guidelines, this code should be used when documenting vesicoureteral reflux with associated nephropathy without hydroureter
  • It is important to ensure that documentation clearly indicates the unilateral nature of the condition and any associated complications

Exclusion Criteria

Do NOT use N13.721 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

CPT 50435CPT Code

Ureteral Reimplantation

Clinical Scenario

Used in cases of severe reflux requiring surgical correction.

Documentation Requirements

Operative report detailing the procedure and indication for surgery.

Specialty Considerations

Urology specialists should ensure comprehensive documentation of pre-operative evaluations.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like vesicoureteral reflux, improving the accuracy of patient records and facilitating better management of related complications.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like vesicoureteral reflux, improving the accuracy of patient records and facilitating better management of related complications.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like vesicoureteral reflux, improving the accuracy of patient records and facilitating better management of related complications.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the significance of coding N13.721 accurately?

Accurate coding of N13.721 is crucial for proper patient management, reimbursement, and tracking of healthcare outcomes related to vesicoureteral reflux and its complications.