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N18.4
ICD-10-CM
Stage 4 Chronic Kidney Disease

Understanding Stage 4 Chronic Kidney Disease: Find information on diagnosis, treatment, and management of CKD Stage 4. Learn about GFR levels, creatinine clearance, and other lab results indicative of Stage 4 kidney disease. Explore clinical documentation requirements, ICD-10 codes (N44.3), medical coding guidelines, and healthcare resources for patients with end-stage renal disease ESRD. This resource provides valuable insights for healthcare professionals, nephrologists, and patients seeking information about Chronic Kidney Disease Stage 4.

Also known as

CKD Stage 4
Chronic Renal Failure Stage 4

Diagnosis Snapshot

Key Facts
  • Definition : Severely reduced kidney function (GFR 15-29 mL/min/1.73 m2), nearing kidney failure.
  • Clinical Signs : Fluid buildup, fatigue, nausea, loss of appetite, muscle cramps, sleep problems.
  • Common Settings : Nephrology clinics, dialysis centers, transplant centers, hospitals.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC N18.4 Coding
N18.4

Chronic kidney disease, stage 4

Severe reduction in kidney function.

N18.5-N18.6

Chronic kidney disease, stages 5-6

Kidney failure requiring dialysis or transplant.

I12.0-I13.9

Hypertensive kidney disease

Kidney disease caused by high blood pressure.

E10.2-E14.2

Diabetes with kidney complications

Kidney disease resulting from diabetes.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the CKD confirmed stage 4?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Stage 4 CKD
Stage 3 CKD
Stage 5 CKD

Documentation Best Practices

Documentation Checklist
  • GFR 15-29 mL/min/1.73 m2 documented
  • ICD-10-CM G3A.4 confirmed diagnosis
  • Supporting lab data: creatinine, BUN
  • Evidence of CKD complications noted
  • Treatment plan and patient education

Coding and Audit Risks

Common Risks
  • Unspecified CKD stage

    Coding CKD stage 4 without documented supporting evidence like GFR or eGFR can lead to downcoding or denial.

  • Comorbidity coding

    Missing documentation of related conditions like hypertension or diabetes complicating CKD impacts severity and reimbursement.

  • Unconfirmed diagnosis

    Coding CKD stage 4 based on suspected diagnosis without confirmatory testing poses audit risk and inaccurate quality reporting.

Mitigation Tips

Best Practices
  • ICD-10-CM N18.4 coding, CKD stage 4, compliant documentation.
  • CDI: Precise GFR, albuminuria, and complications for N18.4.
  • Optimize CKD stage 4 care plan: Dietary phosphorus, potassium control.
  • Medication reconciliation: Nephrotoxic drugs, dosage adjustments.
  • Hemodialysis access planning, patient education for future ESRD.

Clinical Decision Support

Checklist
  • Verify eGFR <15 mL/min/1.73 m2 consistently
  • Confirm documentation of CKD stage 4 criteria
  • Review patient medications for nephrotoxicity
  • Assess for uremic complications and document
  • Check dialysis access planning if needed

Reimbursement and Quality Metrics

Impact Summary
  • Stage 4 Chronic Kidney Disease Reimbursement: Coding accuracy impacts payments for dialysis, E/M, and medications. Appropriate documentation justifies higher complexity levels.
  • Quality Metrics Impact: CKD stage 4 reporting affects hospital quality scores tied to readmissions, patient outcomes, and care coordination.
  • Coding: Accurate ICD-10-CM N18.4 code capture is crucial for proper reimbursement and quality data analysis. Avoid unspecified codes for maximized specificity.
  • Hospital Reporting: Impacts value-based purchasing programs, hospital rankings, and public transparency initiatives related to CKD patient care.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code N18.4 for CKD Stage 4
  • Document GFR 15-29 ml/min
  • Specify CKD complications
  • Consider secondary conditions
  • Document dialysis or transplant status

Documentation Templates

Patient presents with Stage 4 Chronic Kidney Disease (CKD), confirmed by estimated glomerular filtration rate (eGFR) between 15 and 29 mLmin1.73 m2, consistent with severely decreased kidney function.  Clinical manifestations include  uremic symptoms such as fatigue, pruritus, and anorexia, as well as potential complications like anemia, mineral and bone disorders (MBD), and fluid overload.  Laboratory findings reveal elevated blood urea nitrogen (BUN), creatinine, and phosphorus levels, with decreased hemoglobin and hematocrit.  Patient education provided on renal diet, medication management, and the importance of regular nephrology follow-up.  Treatment plan focuses on managing complications, slowing CKD progression, and preparing for renal replacement therapy (dialysis or transplant).  Discussed dialysis modality options including hemodialysis and peritoneal dialysis, as well as transplant evaluation criteria.  Referral made to a registered dietitian for nutritional counseling and a social worker for psychosocial support.  ICD-10 code N45.4 assigned.  Prognosis discussed, emphasizing the importance of adherence to the treatment plan.  Follow-up scheduled in two weeks to monitor renal function and adjust treatment as needed.