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ICD-10 Guide
ICD-10 CodesChapter 14: Diseases of the genitourinary systemN26

N26

Billable

Unspecified contracted kidney

Chapter 14:Diseases of the genitourinary system

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

Code Description

ICD-10 N26 is a billable code used to indicate a diagnosis of unspecified contracted kidney.

Key Diagnostic Point:

Unspecified contracted kidney refers to a condition where the kidney is smaller than normal, often due to chronic kidney disease or other underlying renal disorders. This condition can arise from various etiologies, including ischemic nephropathy, where reduced blood flow leads to kidney tissue damage and subsequent contraction. The contracted kidney may not exhibit specific symptoms initially, but as the condition progresses, patients may experience hypertension, electrolyte imbalances, and signs of renal insufficiency. Diagnosis typically involves imaging studies such as ultrasound or CT scans, which can reveal the size and structure of the kidneys. Laboratory tests may also be performed to assess kidney function through serum creatinine and glomerular filtration rate (GFR). The management of an unspecified contracted kidney focuses on addressing the underlying cause, monitoring renal function, and managing complications associated with chronic kidney disease. It is crucial for healthcare providers to document the patient's history, symptoms, and any relevant imaging or laboratory findings to ensure accurate coding and appropriate treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in underlying causes leading to contracted kidneys.
  • Need for comprehensive documentation to support the diagnosis.
  • Potential overlap with other kidney disorders requiring careful differentiation.
  • Variability in clinical presentation and progression of the disease.

Audit Risk Factors

  • Inadequate documentation of the underlying cause.
  • Failure to provide imaging or lab results supporting the diagnosis.
  • Misuse of the code for conditions that are not contracted kidneys.
  • Inconsistent clinical notes regarding kidney size and function.

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed patient history, imaging results, and lab tests indicating kidney function.

Common Clinical Scenarios

Patients with chronic kidney disease presenting with hypertension and electrolyte imbalances.

Billing Considerations

Ensure that all relevant diagnostic tests are documented to support the diagnosis of contracted kidney.

Primary Care

Documentation Requirements

Comprehensive patient history and physical examination findings related to renal health.

Common Clinical Scenarios

Routine check-ups revealing signs of renal impairment or hypertension.

Billing Considerations

Document any referrals to nephrology for further evaluation and management.

Coding Guidelines

Inclusion Criteria

Use N26 When
  • According to ICD
  • 10 coding guidelines, N26 should be used when there is clear documentation of a contracted kidney without a more specific diagnosis
  • It is essential to ensure that the condition is not classified under other codes that specify the underlying cause or type of kidney disorder

Exclusion Criteria

Do NOT use N26 When
No specific exclusions found.

Related CPT Codes

76700CPT Code

Ultrasound, abdomen, complete

Clinical Scenario

Used to evaluate kidney size and structure in patients suspected of having contracted kidneys.

Documentation Requirements

Document the reason for the ultrasound and findings related to kidney size.

Specialty Considerations

Nephrologists may require additional imaging to assess renal function.

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 contracted kidneys. This specificity aids in better tracking of kidney disease prevalence and management outcomes, ultimately improving patient care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of kidney disorders, including contracted kidneys. This specificity aids in better tracking of kidney disease prevalence and management outcomes, ultimately improving patient care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of kidney disorders, including contracted kidneys. This specificity aids in better tracking of kidney disease prevalence and management outcomes, ultimately improving patient care.

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 N26?

Coding N26 accurately reflects the patient's renal status and helps in tracking the prevalence of kidney disorders, which is crucial for public health and resource allocation.