I lied at MEPS. Will they go back and look through my medical records?

Congratulations. You are about to learn the definition of career suicide

It sounds like you have not yet enlisted. When I enlisted I needed a waiver for a broken arm and for my eyesight. It took an extra couple of weeks to get letters from my personal doctors and have the Army evaluate my issues. As I served for 20 years you can assume that my case was successful. If you are trying to enlist just tell the truth and see what happens. Unless the Army has a glut of people trying to enlist most likely they will only classify you a medically unfit. Unless things have drastically changed the military is not in the habit of prosecuting citizens for trying to enlist. However, if you are rejected and try to enlist somewhere else, or in another service, and lie again you might be charged.

Choices have consequences and like Knight said in the Indiana Jones movie The Last Crusade... "He chose poorly."

Choices have consequences and like Indiana Jones in the Last Crusade... "He chose poorly."

Lying about anything will always come back to bite you in your ass. Now that you blabbering about your mistake in lying to the world, always remember that there's always a person with a bigger mouth out there, who is ready to wreck your life.

Learn the Army values.

LDRSHIP.

You abrogated several of these. Go make it right. If its a serious issue, you might be saving your own life.

And, yes if you are posting this under your real name you really have no choice now. Though, you really passed on the only choice previously.

So you weren’t aware of it when you went to MEPS, and your mom told you about it when you got home from MEPS right?
Seriously, they have bigger fish to fry than a medical omission that was caught at MEPS. Go through the Cardiac consult, and see what happens. Most murmurs are benign, and if it’s not, hey great catch MEPS doc. They might get you a medical waiver, but it is really up to the branch to decide. Don’t worry about fines and stuff, it’s not worth it for them to pursue.

John Kellen. Keep your mouth closed. Let them do their job of checking you out and determining from their examination if you are fit for duty.

Information is Ammunition!! Say nothing play dumb!~

I had a friend I joined the AF with, and he told the recruiter about his heart murmur when he enlisted.
It was checked at the time of our physicals and found not to be a disqualifying issue. He had no problems during his enlistment, but the medical personnel was aware of it when he would go to the dispensary.