ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesN18.3

N18.3

Billable

Chronic kidney disease, stage 3 (moderate)

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

Code Description

ICD-10 N18.3 is a billable code used to indicate a diagnosis of chronic kidney disease, stage 3 (moderate).

Key Diagnostic Point:

Chronic kidney disease (CKD) stage 3 is characterized by a moderate decrease in kidney function, with an estimated glomerular filtration rate (eGFR) of 30 to 59 mL/min/1.73 m². This stage indicates that the kidneys are not filtering waste effectively, leading to potential complications such as hypertension, anemia, and bone disease. Patients may experience symptoms like fatigue, swelling, and changes in urination. Management of CKD stage 3 often involves lifestyle modifications, medication to control blood pressure and diabetes, and regular monitoring of kidney function. It is crucial to prevent progression to more severe stages of CKD, which may require renal replacement therapy, including dialysis or transplantation. Early intervention and patient education are vital to managing this condition effectively.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between stages of CKD based on eGFR values.
  • Understanding the impact of comorbid conditions such as diabetes and hypertension.
  • Documenting the patient's symptoms and management plan accurately.
  • Monitoring and coding for potential complications associated with CKD.

Audit Risk Factors

  • Inadequate documentation of eGFR values.
  • Failure to document comorbid conditions affecting CKD.
  • Misclassification of CKD stage due to lack of updated lab results.
  • Inconsistent documentation of treatment plans and follow-up care.

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed lab results, eGFR calculations, and treatment plans.

Common Clinical Scenarios

Management of CKD patients with diabetes or hypertension.

Billing Considerations

Ensure accurate staging of CKD based on the latest lab results.

Primary Care

Documentation Requirements

Regular monitoring of kidney function and management of comorbidities.

Common Clinical Scenarios

Routine check-ups for patients with known CKD.

Billing Considerations

Document lifestyle modifications and patient education efforts.

Coding Guidelines

Inclusion Criteria

Use N18.3 When
  • Follow the official ICD
  • CM guidelines for coding CKD, ensuring accurate documentation of eGFR and associated conditions
  • Include any relevant comorbidities that may impact treatment and management

Exclusion Criteria

Do NOT use N18.3 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99214CPT Code

Established patient office visit, level 4

Clinical Scenario

Used for follow-up visits for CKD management.

Documentation Requirements

Document patient's history, examination findings, and management plan.

Specialty Considerations

Nephrology and primary care may use this code for CKD follow-ups.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of CKD stages, improving the accuracy of patient records and facilitating better management strategies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of CKD stages, improving the accuracy of patient records and facilitating better management strategies.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of CKD stages, improving the accuracy of patient records and facilitating better management strategies.

Resources

Clinical References

  • •
    Kidney Disease: Improving Global Outcomes (KDIGO)

Coding & Billing References

  • •
    Kidney Disease: Improving Global Outcomes (KDIGO)

Frequently Asked Questions

What is the significance of eGFR in CKD staging?

eGFR is crucial for determining the stage of CKD, guiding treatment decisions, and monitoring disease progression.