ICD Code N18.30

ICD code N18.30 is chronic kidney disease, stage 3, unspecified. It indicates moderate kidney damage where the specific substage of stage 3 is not identified.

1. Evidence of moderate decrease in glomerular filtration rate (GFR), typically between 30–59 mL/min/1.73 m²

2. Chronicity of kidney damage or decreased kidney function for at least three months

3. Laboratory findings indicating persistent reduction in kidney function (e.g., elevated serum creatinine, reduced eGFR)

4. Absence of specification regarding substages (stage 3a or 3b)

5. May present with mild to moderate symptoms such as fatigue, edema, or hypertension, though often asymptomatic

6. No evidence of acute kidney injury or end-stage renal disease

7. Not attributable to other specific stages of chronic kidney disease

Relevant CPT codes that may be used to treat ICD code N18.30 include:

- 99202–99215 (Evaluation and Management services)

- 90935 (Hemodialysis procedure with single physician evaluation)

- 90937 (Hemodialysis procedure requiring repeated evaluation)

- 90945 (Dialysis procedure other than hemodialysis)

- 90947 (Dialysis procedure other than hemodialysis, requiring repeated evaluation)

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

- 80047–80048 (Basic metabolic panel)

- 80069 (Renal function panel)

- 36415 (Collection of venous blood by venipuncture)

- 82043 (Microalbumin, urine)

- 82565 (Creatinine; blood)

- 84132 (Potassium; serum)

- 99217–99220 (Observation care, if applicable)

CPT code selection should be based on the specific services rendered and clinical documentation.

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