ICD Code N18.2

ICD code N18.2 is chronic kidney disease, stage 2, which indicates mild loss of kidney function.

1. Evidence of kidney damage for at least three months, as indicated by structural or functional abnormalities of the kidney, with or without decreased glomerular filtration rate (GFR).

2. Glomerular filtration rate (GFR) between 60 and 89 mL/min/1.73 m², confirmed on at least two separate occasions three months apart.

3. Presence of markers of kidney damage, such as albuminuria (albumin-to-creatinine ratio ≥30 mg/g), urine sediment abnormalities, electrolyte and other abnormalities due to tubular disorders, or abnormalities detected by histology or imaging.

4. Absence of acute kidney injury or other transient causes of decreased kidney function.

5. Patient may be asymptomatic or present with mild symptoms related to underlying kidney damage, but not with overt symptoms of advanced kidney disease.

Relevant CPT codes that may be used to treat ICD code N18.2 include:

- 99202–99215 (Evaluation and Management services, new and established patients)

- 82565 (Creatinine; blood)

- 81000–81003 (Urinalysis)

- 36415 (Collection of venous blood by venipuncture)

- 80047–80048 (Basic metabolic panel)

- 80069 (Renal function panel)

- 90935, 90937 (Hemodialysis procedures, if indicated)

- 90945, 90947 (Dialysis procedures other than hemodialysis, if indicated)

- 99406–99407 (Smoking and tobacco use cessation counseling, if applicable)

- 99495–99496 (Transitional care management, if applicable)

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