N18.32
Chronic kidney disease, stage 3b
Clinical Classification Guidelines
Medical Intelligence & Overview
Chronic Kidney Disease (CKD) is a gradual loss of kidney function over time. Stage 3b CKD, classified under ICD-10 code N18.32, indicates moderate to severe reduction in kidney function. At this stage, the kidneys are functioning at around 30-44% of their normal ability, which can impact your overall health. Recognizing and managing CKD early can help slow its progression and prevent complications.
Causes & Symptoms
Clinical Causes: High blood pressure (hypertension) Diabetes mellitus Glomerulonephritis (inflammation of the kidney glomeruli) Polycystic kidney disease Obstructive uropathy (blockages in the urinary tract) Repeated kidney infections Certain medications that can harm the kidneys Chronic exposure to toxins or nephrotoxic agents
Key Symptoms: Fatigue and weakness Swelling in the legs, ankles, or feet Shortness of breath Changes in urination patterns (more or less urinating than usual) Blood in the urine or foamy urine Persistent nausea or vomiting Loss of appetite Muscle cramps or twitching Difficulty concentrating
Diagnostic & Treatment
Diagnosis Path: Blood tests measuring serum creatinine to calculate estimated glomerular filtration rate (eGFR); at this stage, eGFR ranges between 30 and 44 mL/min/1.73 m². Urinalysis to detect protein, blood, or other abnormalities. Imaging tests like ultrasound to check kidney size and structure. Assessment of underlying causes such as blood pressure and blood sugar levels.
Treatment Protocols: Controlling blood pressure to target levels, often with ACE inhibitors or ARBs. Managing blood sugar levels in diabetic patients. Adopting a kidney-friendly diet low in sodium, potassium, phosphorus, and protein as recommended by a healthcare professional. Avoiding medications that can harm the kidneys, such as NSAIDs. Regular monitoring of kidney function and overall health status. Treating underlying conditions like hypertension and diabetes effectively. Addressing anemia or bone disease associated with CKD. Considering referral to a nephrologist for specialized care.
Clinical Advice & FAQs
Billing Guidance
Is N18.32 a billable ICD-10 code?
Yes, N18.32 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report N18.32?
Clinical documentation must specify the nature of Chronic kidney disease, stage 3b and any associated comorbidities for accurate reporting.
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