DME 101
Common Terms
Insurance Basics
The Billing Flow
Oops! That's a Denial
100

What does “DME” stand for?

✅ What is Durable Medical Equipment?

100

What is a HCPCS code used for?

✅ To identify medical equipment in billing.

100

What is Medicare Part B known to cover?


✅ Durable medical equipment (DME)

100

What’s the first thing we check before billing?

✅ Patient insurance eligibility.

100

A denial means this happened to our claim.

It was not paid

200

 What type of form is used to submit a DME claim?

✅ What is the CMS-1500?

200

What does “EOB” stand for?

✅ What is Explanation of Benefits?

200

What is a deductible?

✅ The amount a patient pays before insurance kicks in.

200

After a claim is sent, we wait for this.

✅ What is payment or response?

200

A denial for "no auth" means this was missing.

Prior authorization

300

DME is only covered when it’s used in this setting.

✅ What is the patient’s home?

300

What does CMN stand for and why do we need it?

✅ Certificate of Medical Necessity; it proves why the patient needs the item.

300

What is a payer?

✅ An insurance company that pays medical bills.

300

What system or tool helps us track billed claims?

✅ Billing software or AR dashboard.

300

If a claim is denied, what process lets us fight it?

An appeal

400

What makes a product “medically necessary”?

✅ It’s needed to treat a condition and ordered by a doctor.

400

What does “CO-45” mean on an EOB?

✅ It means the amount charged is above the allowed limit.

400

What’s the difference between a primary and secondary payer?

✅ Primary pays first; secondary pays what’s left (if covered)
80/20 rule

400

What do we call it when we match payments to claims?

✅ What is payment posting?

400

 What’s one common reason a claim might be rejected before it even gets to the payer?

✅ Incorrect patient or policy info

(Will accept modifiers and documentation)

500

 Name two types of documents that support medical necessity.

✅ What are a physician’s order and progress notes?

500

What does “modifiers” mean in billing?

Extra letters/numbers added to codes to give more info.

500

What’s the purpose of verifying insurance?

✅ To confirm coverage and avoid denials.

500

What is a remittance advice (RA) used for?

✅ It tells us what was paid or denied on a claim.


500

What can we do when a denial isn’t clear or looks incorrect?

✅ Call the payer or request an appeal review.

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