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N28.9
ICD-10-CM
Kidney Disease

Find comprehensive information on kidney disease diagnosis including chronic kidney disease CKD stages, acute kidney injury AKI, renal failure, and end-stage renal disease ESRD. Learn about relevant healthcare documentation, clinical terminology, medical coding guidelines including ICD-10 codes, and the role of AI in diagnostics. Explore resources for healthcare professionals, patients, and medical coders seeking information on kidney disease diagnosis, treatment, and management.

Also known as

Renal Disease
Chronic Kidney Disease
CKD

Diagnosis Snapshot

Key Facts
  • Definition : Gradual loss of kidney function to filter waste and fluid.
  • Clinical Signs : Swelling, fatigue, nausea, changes in urination.
  • Common Settings : Primary care, nephrology clinic, dialysis center.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC N28.9 Coding
N00-N99

Diseases of the genitourinary system

Covers various kidney, urinary tract, and reproductive organ disorders.

I10-I15

Hypertensive diseases

Includes high blood pressure complications affecting kidneys.

E08-E13

Diabetes mellitus

Diabetic kidney disease and related complications are included.

N17-N19

Acute kidney failure and chronic kidney disease

Covers various stages of kidney failure and related conditions.

Code-Specific Guidance

Decision Tree for

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

Is the kidney disease acute?

  • Yes

    Due to drugs/toxins?

  • No

    Is it chronic kidney disease (CKD)?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Chronic Kidney Disease
Acute Kidney Injury
Nephrotic Syndrome

Documentation Best Practices

Documentation Checklist
  • Kidney Disease Documentation Checklist
  • ICD-10 coding: CKD stage, cause, complications
  • GFR, albuminuria, and other lab results
  • Symptoms: edema, fatigue, changes in urination
  • Treatment plan: medications, dialysis, transplant
  • Relevant history: diabetes, hypertension, family history

Coding and Audit Risks

Common Risks
  • Unspecified CKD Stage

    Coding CKD without specifying stage (N75.1-N75.5, N75.9) leads to inaccurate severity reflection and DRG assignment.

  • Comorbidity Overcoding

    Incorrectly coding related conditions like hypertension (I10, I12) and diabetes (E10-E14) with CKD can inflate risk scores.

  • Acute vs. Chronic CKD

    Miscoding acute kidney injury (AKI, N80-N89) as chronic kidney disease (CKD, N18) impacts quality metrics and reimbursement.

Mitigation Tips

Best Practices
  • Code CKD stages precisely using ICD-10-CM guidelines for optimal reimbursement.
  • Document CKD etiology, comorbidities, and complications for accurate risk adjustment.
  • Query physicians for clarification on unspecified renal diagnoses to improve data quality.
  • Educate CDI staff on CKD coding and documentation updates for compliance.
  • Monitor CKD coding patterns and variations for early detection of potential issues.

Clinical Decision Support

Checklist
  • Verify GFR and creatinine levels (ICD-10 N18)
  • Document proteinuria and hematuria findings
  • Assess comorbidities: hypertension, diabetes (E11, I10)
  • Review imaging results for kidney abnormalities
  • Evaluate patient symptoms: fatigue, edema

Reimbursement and Quality Metrics

Impact Summary
  • Kidney Disease reimbursement hinges on accurate ICD-10-CM coding (N00-N29) for maximum claim acceptance.
  • Coding quality directly impacts Chronic Kidney Disease (CKD) stage capture, affecting MS-DRG assignment and payment.
  • Complete documentation of comorbidities and complications improves Case Mix Index (CMI) for appropriate reimbursement.
  • Accurate coding and reporting enhance quality metrics for kidney care, impacting public outcomes reporting and value-based care.

Streamline Your Medical Coding

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

Quick Tips

Practical Coding Tips
  • Code CKD stage with N18.x
  • Document GFR for CKD
  • Laterality matters, use N28.x
  • Code HTN with CKD, I12.x, I15.x
  • Diabetes with CKD? Code E10.22, E11.22

Documentation Templates

Patient presents with signs and symptoms suggestive of chronic kidney disease (CKD).  Presenting complaints include fatigue, decreased urine output, swelling in the ankles and feet, and shortness of breath.  Relevant medical history includes hypertension, type 2 diabetes mellitus, and a family history of kidney failure.  Physical examination reveals elevated blood pressure and pitting edema in the lower extremities.  Laboratory findings demonstrate an elevated serum creatinine level, decreased glomerular filtration rate (GFR), and proteinuria.  Based on these findings, a diagnosis of chronic kidney disease stage [Insert Stage] is made.  Differential diagnoses considered include acute kidney injury (AKI), nephrotic syndrome, and glomerulonephritis.  Plan includes initiation of renoprotective therapy with angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs), management of comorbidities such as hypertension and diabetes, dietary counseling focusing on protein restriction and sodium reduction, and patient education regarding disease progression and renal replacement therapy options like dialysis or kidney transplant.  Follow-up is scheduled to monitor renal function, electrolyte levels, and blood pressure control.  ICD-10 code N18. [Insert appropriate 5th character for stage of CKD] assigned.  Medical billing codes will reflect evaluation and management (E/M) services, laboratory testing, and prescribed medications.