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ICD-10 Guide
ICD-10 CodesN28.8

N28.8

Billable

Other specified disorders of kidney and ureter

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

Code Description

ICD-10 N28.8 is a billable code used to indicate a diagnosis of other specified disorders of kidney and ureter.

Key Diagnostic Point:

N28.8 encompasses a variety of kidney and ureter disorders that do not fall under more specific classifications. This includes conditions such as small kidney (renal hypoplasia), ischemic nephropathy, and other atypical kidney disorders. Small kidney refers to a congenital or acquired condition where the kidney is smaller than normal, potentially leading to reduced renal function. Ischemic nephropathy is characterized by kidney damage due to inadequate blood supply, often resulting from vascular diseases. Other specified disorders may include rare or less common conditions affecting kidney structure or function, which may not be classified elsewhere in the ICD-10 coding system. Accurate diagnosis and documentation are crucial, as these disorders can significantly impact renal function and overall health, necessitating tailored management strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of conditions included under this code
  • Need for precise documentation to differentiate from other kidney disorders
  • Potential overlap with other ICD-10 codes
  • Variability in clinical presentation and severity

Audit Risk Factors

  • Inadequate documentation of the specific disorder
  • Misclassification of the disorder leading to incorrect coding
  • Failure to provide supporting diagnostic tests
  • Inconsistent clinical notes regarding the patient's condition

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed clinical notes, imaging studies, and lab results to support diagnosis.

Common Clinical Scenarios

Patients with chronic kidney disease, ischemic nephropathy, or congenital kidney anomalies.

Billing Considerations

Ensure that all relevant tests and evaluations are documented to support the diagnosis.

Urology

Documentation Requirements

Surgical notes, imaging, and pathology reports for any surgical interventions.

Common Clinical Scenarios

Patients undergoing procedures for kidney stones or other ureteral obstructions.

Billing Considerations

Document any anatomical variations or surgical findings that may influence coding.

Coding Guidelines

Inclusion Criteria

Use N28.8 When
  • According to ICD
  • 10 guidelines, N28
  • 8 should be used when a specific disorder of the kidney or ureter is documented but does not fit into other defined categories
  • Coders must ensure that the documentation supports the use of this code and that it is not used for unspecified conditions

Exclusion Criteria

Do NOT use N28.8 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

50360CPT Code

Kidney transplant

Clinical Scenario

Used in cases where kidney disorders lead to end-stage renal disease.

Documentation Requirements

Transplant evaluation and donor compatibility documentation.

Specialty Considerations

Nephrology and transplant surgery documentation must align for accurate coding.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of kidney disorders, including those classified under N28.8. This specificity aids in better tracking of patient outcomes and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of kidney disorders, including those classified under N28.8. This specificity aids in better tracking of patient outcomes and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of kidney disorders, including those classified under N28.8. This specificity aids in better tracking of patient outcomes and resource allocation.

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 conditions are included under N28.8?

N28.8 includes various specified disorders of the kidney and ureter that do not fit into other categories, such as small kidney and ischemic nephropathy.

How do I differentiate between N28.8 and other kidney codes?

N28.8 should be used when a specific disorder is documented but does not fall under more defined categories. Ensure that the documentation supports the use of this code.