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v1.0.0
ICD-10 Guide
ICD-10 CodesN18.30

N18.30

Billable

Chronic kidney disease, stage 3 unspecified

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

Code Description

ICD-10 N18.30 is a billable code used to indicate a diagnosis of chronic kidney disease, stage 3 unspecified.

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) ranging from 30 to 59 mL/min/1.73 m². This stage is often asymptomatic but can lead to complications such as hypertension, anemia, and bone disease. Patients may experience fatigue, swelling, and changes in urination patterns. Management typically includes controlling blood pressure, managing diabetes, and dietary modifications. Regular monitoring of kidney function is essential to assess progression to more advanced stages of CKD or the potential need for renal replacement therapy, including dialysis or transplantation. The unspecified designation indicates that the specific cause of CKD is not documented, which can complicate treatment planning and prognosis. Understanding the nuances of CKD staging is crucial for appropriate coding and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of CKD stages
  • Need for accurate eGFR calculations
  • Differentiation from acute kidney injury (AKI)
  • Potential for co-morbid conditions affecting kidney function

Audit Risk Factors

  • Inadequate documentation of CKD stage
  • Failure to document co-morbid conditions
  • Misclassification of CKD stage
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Nephrology

Documentation Requirements

Detailed history of kidney function, eGFR results, and treatment plans.

Common Clinical Scenarios

Management of patients with CKD, monitoring progression, and planning for dialysis or transplant.

Billing Considerations

Ensure accurate staging of CKD and documentation of any complications or co-morbidities.

Primary Care

Documentation Requirements

Routine monitoring of kidney function, management of hypertension and diabetes.

Common Clinical Scenarios

Screening for CKD in at-risk populations, managing chronic conditions that affect kidney health.

Billing Considerations

Documenting risk factors and patient education on CKD management.

Coding Guidelines

Inclusion Criteria

Use N18.30 When
  • Follow official ICD
  • CM guidelines for coding CKD, including the use of additional codes for associated conditions such as hypertension or diabetes
  • Ensure accurate documentation of eGFR and stage

Exclusion Criteria

Do NOT use N18.30 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

90935CPT Code

Hemodialysis procedure

Clinical Scenario

Used for patients with advanced CKD requiring renal replacement therapy.

Documentation Requirements

Document the frequency and duration of dialysis sessions.

Specialty Considerations

Nephrology specialists should ensure accurate coding based on treatment plans.

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 CKD stage 3?

CKD stage 3 indicates moderate kidney damage and a significant risk for progression to end-stage renal disease. It requires careful monitoring and management to prevent complications.