Chronic kidney disease is defined as the presence of kidney damage or decreased kidney function (glomerular filtration rate [GFR] < 60 mL/min per 1.73 m2) for 3 months or more and is caused by a multitude of etiologies.
The extent of kidney dysfunction is categorized into several stages based on GFR: stage 1 with GFR > 90 mL/min per 1.73 m2, stage 2 with GFR 60-89 mL/min per 1.73 m2, stage 3 with GFR 30-59 mL/min per 1.73 m2, stage 4 with GFR 15-29 mL/min per 1.73 m2, and stage 5 with GFR < 15 mL/min per 1.73 m2.
Progressive renal dysfunction results in the accumulation of unfiltered wastes and fluids in the body and is characterized by edema, hematuria, pruritus, fatigue, nausea, and sleep disturbance. Early stages may be asymptomatic or present with few symptoms. With progression of renal dysfunction, several nonspecific symptoms may develop including ecchymosis, vomiting, anorexia, hyposmia, foot and leg edema, pallor, altered taste, and seizures. Urea crystals (uremic frost) may appear on the skin. An infant or child may present with poor growth, polyuria, anemia, hypertension, and uremia (weakness, fatigue, vomiting, and anorexia).
Causes are myriad and include diabetes, hypertension, hyperlipidemia, cardiovascular disease, glomerulonephritis, prior kidney disease, and a history of childhood kidney disease. Diabetes is the most common cause of chronic kidney disease and is responsible for 40% of new cases. Chronic kidney disease can occur in up to 45% of HIV cases, both from infection and complications of treatment, or from comorbid diseases. Agricultural communities, where people are exposed to heat and dehydration and may be exposed to increased nitrate levels in well water, are at increased risk.
Incidence and prevalence vary from nation to nation due to differences in underlying disease rates. In the United States, the incidence of chronic kidney disease is close to 400 per million. Dialysis is the primary means of management once patients progress to renal failure; dialysis patients have an average survival of 3-5 years and prevalence of 1800 cases per million.
Related topics: pruritus without rash, acute kidney injury
Chronic kidney disease
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Synopsis
Codes
ICD10CM:
N18.9 – Chronic kidney disease, unspecified
SNOMEDCT:
90688005 – Chronic renal failure syndrome
N18.9 – Chronic kidney disease, unspecified
SNOMEDCT:
90688005 – Chronic renal failure syndrome
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Diagnostic Pearls
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Differential Diagnosis & Pitfalls
The presentation of chronic kidney disease is exceedingly nonspecific, and its onset is generally insidious.
Etiologies of chronic kidney disease can be classified as prerenal, intrinsic renal, and postrenal.
Prerenal conditions include all those in which kidney perfusion is impaired chronically:
Intrinsic renal disease:
Etiologies of chronic kidney disease can be classified as prerenal, intrinsic renal, and postrenal.
Prerenal conditions include all those in which kidney perfusion is impaired chronically:
Intrinsic renal disease:
- Vascular diseases – Nephrosclerosis, renal artery stenosis
- Glomerular disease – Nephritic conditions (red blood cell casts), nephrotic conditions (proteinuria > 3.5 g/24 h)
- Tubular and interstitial disease – Polycystic kidney disease, Sjögren syndrome, vesicoureteral reflux disease, sarcoidosis
- Can be due to prostatic disease, abdominal mass or tumor, neurogenic bladder, chronic urethral obstruction, or rarely retroperitoneal fibrosis
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Therapy
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Drug Reaction Data
Below is a list of drugs with literature evidence indicating an adverse association with this diagnosis. The list is continually updated through ongoing research and new medication approvals. Click on Citations to sort by number of citations or click on Medication to sort the medications alphabetically.
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References
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Last Reviewed:01/04/2018
Last Updated:09/14/2021
Last Updated:09/14/2021
Chronic kidney disease