American Academy of Professional Coders (AAPC) Practice Exam

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What is the approximate growth rate of fingernails per month?

1 mm
2 mm
3 mm
4 mm

The correct answer is: 3 mm

Fingernails typically grow at an average rate of about 3 millimeters per month. This growth rate can vary based on factors such as age, health, nutrition, and individual genetics, but 3 mm is a widely accepted average across various studies. Understanding this average growth rate is important for topics related to nail care, forensic science, and in medical practice where nail growth may be relevant to diagnosing certain health conditions. Alternative choices represent common misconceptions about nail growth rates, as they either overestimate or underestimate how quickly fingernails actually grow.