Blog · December 17, 2025

Non-Alcoholic Fatty Liver Disease (NAFLD): How Common & ICD-10 Code

* 1 in 3 American adults has NAFLD * 70–90% of people with BMI >30 have fat in their liver * Up to 25% of those will progress to NASH (the version that scars and destroys the liver) * NAFLD is now the FASTEST-growing cause of liver cancer and liver transplants in the United State

Non-Alcoholic Fatty Liver Disease (NAFLD): How Common & ICD-10 Code
Published December 17, 20253 min readby SEOTeam

The Silent Liver Killer Most Overweight Men Never See Coming: Non-Alcoholic Fatty Liver Disease (NAFLD)

Image 1: How Common Is NAFLD in Overweight Men

Picture this:

A 45-year-old guy in NYC — maybe you — grabs a burger on the way home from work, hits the gym once a month “when he can,” and thinks, “I’m just carrying a little extra weight, no big deal.”

His belt size has gone from 34 to 40 in ten years. He feels fine… until one day his doctor says, “Your liver enzymes are sky-high. You have fatty liver.”

He’s shocked. He doesn’t even drink.

Welcome to the world of Non-Alcoholic Fatty Liver Disease (NAFLD) — the #1 chronic liver disease in America in 2025, and the one that hits overweight men the hardest.

The Cold Hard Numbers (2025 data)

  • 1 in 3 American adults has NAFLD
  • 70–90% of people with BMI >30 have fat in their liver
  • Up to 25% of those will progress to NASH (the version that scars and destroys the liver)
  • NAFLD is now the FASTEST-growing cause of liver cancer and liver transplants in the United States
  • ICD-10 code: K75.81 (Nonalcoholic steatohepatitis) and K76.0 (Nonalcoholic fatty liver disease)

And the scariest part? 80% of people with NAFLD have ZERO symptoms until it’s advanced.

How Common Is NAFLD in Overweight Men?

Image 2: How Common Is NAFLD in Overweight Men

If you’re a man with a waist over 40 inches (102 cm), your odds jump off the chart:

  • BMI 25–29.9 (overweight) → 50–70% chance
  • BMI 30–34.9 → 80–90% chance
  • BMI 35+ → basically 100% chance of fat in the liver

That spare tire isn’t just cosmetic — it’s actively dumping fat straight into your liver through the portal vein every single day.

From “A Little Chubby” to Cirrhosis in 10–20 Years

Stage 1: Simple fatty liver (reversible)

Stage 2: NASH — inflammation + liver cell death

Stage 3: Fibrosis — scar tissue builds

Stage 4: Cirrhosis — irreversible, can lead to liver failure or cancer

Most men are diagnosed in Stage 2 or 3 because they never felt Stage 1.

The Good News? Your Liver Is a Beast at Healing Itself

Lose just 7–10% of your body weight and:

  • Liver fat drops up to 80%
  • Inflammation disappears in most cases
  • Fibrosis can improve or even reverse

We see this every week at Vanguard Gastroenterology with our Fibroscan machine — patients come in with stiff, scarred livers and leave 6–12 months later with near-normal scores. All from weight loss. No magic pills.

Why Our Mind-Body Integrative Weight Management Program Is Built for Guys Like You

Image 3: Why Our Mind-Body Integrative Weight Management Program Is Built for Guys Like You

We’re not another “drink shakes and starve” clinic. We built this program because we got tired of telling men, “Your liver is dying — just lose weight” without giving them the real tools.

Here’s what actually works (and what men stick to):

  • No calorie counting torture — we teach you how to eat steak, burgers, and tacos while still dropping fat
  • Quick 20-minute workouts you can do in your living room (no gym bro nonsense)
  • Stress and sleep hacks — because cortisol is silently packing fat onto your liver
  • Weekly check-ins with a real doctor (not a “coach” who took a weekend course)
  • Fibroscan every 3–6 months so you SEE your liver healing in real numbers

Don’t Wait for the Yellow Eyes

If you’re an overweight man in New York and you’ve never had your liver checked, you’re playing Russian roulette.

Come in for a simple blood test + 5-minute painless Fibroscan. It takes 20 minutes total. We have same-week appointments at both Midtown (36 E 31st St) and Woolworth Building (233 Broadway).

Call (212) 889-5544 or book online athttps://www.gastro-nyc.com/patient-services/

Your liver doesn’t complain until it’s too late. Be smarter than that.

Frequently asked questions

Answers to common questions.

  • It’s when fat builds up in your liver even though you drink little or no alcohol. It’s now the most common liver disease in the world and affects mostly overweight and obese adults.

Have questions about your gut?

Book a consultation with Vanguard Gastroenterology.