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ICD-10 Guide
ICD-10 CodesN07.9

N07.9

Billable

Hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions

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

Code Description

ICD-10 N07.9 is a billable code used to indicate a diagnosis of hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions.

Key Diagnostic Point:

Hereditary nephropathy encompasses a range of kidney disorders that are genetically inherited and can lead to progressive renal impairment. The term 'not elsewhere classified' indicates that the specific type of hereditary nephropathy does not fit into other defined categories. Patients may present with isolated proteinuria, which is the presence of excess protein in the urine, often a sign of glomerular damage. This condition can be associated with various genetic mutations affecting the structure and function of the glomeruli, the filtering units of the kidneys. Common hereditary nephropathies include Alport syndrome and Fabry disease, but N07.9 is used when the specific genetic cause is not identified or classified. Diagnosis often involves genetic testing to identify mutations, alongside clinical evaluation and laboratory tests to assess kidney function and morphology. The unspecified morphologic lesions suggest that while there are abnormalities present, they do not conform to a specific histological pattern recognized in other nephropathies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in genetic testing results and interpretation
  • Need for comprehensive patient history to identify hereditary patterns
  • Potential overlap with other nephropathies requiring careful differentiation
  • Documentation of clinical findings and laboratory results

Audit Risk Factors

  • Inadequate documentation of genetic testing results
  • Failure to specify the type of hereditary nephropathy when known
  • Lack of clarity in clinical notes regarding the patient's family history
  • Misclassification of nephropathy types leading to incorrect coding

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed patient history, genetic testing results, and laboratory findings must be documented.

Common Clinical Scenarios

Patients presenting with unexplained proteinuria, family history of kidney disease, or progressive renal impairment.

Billing Considerations

Nephrologists should ensure that all relevant genetic tests are documented and that the clinical significance of findings is clearly articulated.

Genetics

Documentation Requirements

Comprehensive genetic testing reports and family pedigree charts are essential.

Common Clinical Scenarios

Patients with a known family history of hereditary nephropathy seeking genetic counseling.

Billing Considerations

Geneticists must provide clear interpretations of genetic tests to aid nephrologists in diagnosis and coding.

Coding Guidelines

Inclusion Criteria

Use N07.9 When
  • According to ICD
  • 10 coding guidelines, N07
  • 9 should be used when a hereditary nephropathy is diagnosed but does not fit into a more specific category
  • Coders should ensure that the diagnosis is supported by clinical documentation and that any related conditions are also coded appropriately

Exclusion Criteria

Do NOT use N07.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

81229CPT Code

Genetic testing for hereditary nephropathy

Clinical Scenario

Used when a patient is suspected of having a hereditary nephropathy and genetic testing is performed.

Documentation Requirements

Documentation of clinical indications for testing and results of the genetic tests.

Specialty Considerations

Nephrologists and geneticists should collaborate to ensure accurate coding and billing.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of hereditary nephropathies, improving the ability to capture the complexity of these conditions. N07.9 provides a code for cases where the specific type is not identified, which can help in tracking and managing these patients effectively.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of hereditary nephropathies, improving the ability to capture the complexity of these conditions. N07.9 provides a code for cases where the specific type is not identified, which can help in tracking and managing these patients effectively.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of hereditary nephropathies, improving the ability to capture the complexity of these conditions. N07.9 provides a code for cases where the specific type is not identified, which can help in tracking and managing these patients effectively.

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 using N07.9?

N07.9 is significant as it allows coders to classify hereditary nephropathy cases that do not fit into more specific categories, ensuring that these patients receive appropriate recognition and management in healthcare systems.