How to use AI to understand a confusing medical bill

The bill arrived. It has a total that made you sit down, a column of five-digit codes, and an abbreviation that might be “ADJ” or might be a typo. You want to know what you’re paying for and whether it’s right.

AI can’t tell you what you owe. It can help you translate the bill, so in about 30 minutes you’ll have a plain-English draft of each line and a list of what to ask.

A quick note from us: this page is general information to help you read a bill, not legal, financial, or medical advice. For what you owe or what your options are, check with the billing office, your insurer, or a professional like a patient advocate.

What you’ll end up with

A plain-English explanation of each line, a list of questions, and a phone script.

Before you start

The provider’s bill (from the doctor’s office, hospital, or lab)
The matching Explanation of Benefits from your insurer, if you have insurance
A pen for the phone call

Step 1: Ask for an itemized bill

If your bill shows only a total or vague lines like “medical services,” ask the provider’s billing office for an itemized bill, listing each service’s date, code, and charge. It’s a normal request. Then find the EOB for the same date of service from your insurer.

Step 2: Remove your personal details

Type out only the lines you need, or cover personal details on a photo before uploading it.

Dates, service codes, descriptions, and dollar amounts are all the AI needs.

Step 3: Get a line-by-line translation

A few terms you’ll see on most bills:

CPT codes are five-character codes for medical procedures and services, maintained by the American Medical Association. HCPCS codes (like J1885) cover supplies, drugs, and equipment.
ICD-10 codes describe the diagnosis (why you got the care).
Allowed amount is the price your insurer agreed to for a service, often below the listed charge.
Deductible, copay, and coinsurance are your share: what you pay yearly before your plan pays for most services, a flat fee per visit, and a percentage of the cost.

Try This Prompt

I've removed all personal information from this medical bill. Explain each line in plain English for someone with no medical or billing background.

For each line, tell me what the service most likely is, what type of code it is (CPT, HCPCS, ICD-10, revenue code, or other), and what any abbreviations stand for.

If you aren't sure what a code means, say so instead of guessing. Do not give medical advice, and do not tell me whether I owe any amount or whether a charge is allowed; I will ask my provider and insurer.

BILL LINES:
[PASTE EACH LINE: DATE OF SERVICE, CODE, DESCRIPTION, CHARGE]

What you might get back (example from ChatGPT; results vary)

Trimmed from a real ChatGPT answer (logged out, October 15, 2026). The ”…” marks show where we cut.

99284 — CPT code: Emergency department visit, level 4. This code generally represents a visit involving a moderate level of medical decision-making, or the applicable qualifying time-based criteria under CPT rules.

…

HI SEV: High severity. This appears to be the billing system’s abbreviated description; it is not, by itself, proof that the patient’s condition was officially classified as highly severe.

The AI explains codes with great confidence, including ones it has misremembered. Confirm important ones with the billing office.

Step 4: Line up the bill with your EOB

Side by side, differences are easier to spot.

Try This Prompt

Compare my medical bill with my insurer's Explanation of Benefits for the same date of service. Personal information is removed.

Make a table with these columns: service, code, amount billed, amount the plan allowed, amount the plan paid, amount listed on the EOB as my responsibility, amount on the bill.

Then list any service that appears on only one document, appears twice, or has different amounts on the two documents. For each one, suggest a question I could ask the billing office or my insurer. Do not tell me which amount is correct.

Only use the numbers I provide. Do not estimate or fill in missing amounts.

BILL:
[PASTE BILL LINES]

EOB:
[PASTE EOB LINES]

Check the table against the paper, since the AI can miscopy a number. A difference isn’t proof of an error, only a question to ask.

Step 5: Learn the surprise-billing basics

In the US, the No Surprises Act, a federal law in effect since January 1, 2022, protects most insured people from surprise out-of-network bills for emergency care, certain care from out-of-network providers at in-network hospitals or surgery centers, and air ambulances. Ground ambulances aren’t covered, though some states have their own rules.

If you’re uninsured or paying for care yourself, other protections may apply. For what they are and how they work, see the official CMS No Surprises Act page and ask your billing office or insurer.

The rules have exceptions, so don’t ask the AI whether they cover your bill. See the federal government’s medical bill rights page, or call the No Surprises Help Desk at 1-800-985-3059.

Step 6: Write your phone script

Billing calls go better with notes. Hold music goes better with snacks. We can help with the notes.

Try This Prompt

Based on the above, write a short, polite script for calling [THE PROVIDER'S BILLING OFFICE / MY INSURANCE COMPANY].

Include a one-sentence reason for calling, my questions numbered one issue each, a question about payment plans or financial assistance, and a reminder to write down the representative's name, the date, and a reference number.

Keep the tone calm. Do not include legal threats.

When it goes sideways

A code doesn’t match your visit? Ask the billing office what it’s for. Coding errors happen, and so do AI errors.
It says what you owe or whether a charge is allowed? Ignore that. Ask your provider or insurer.
Your photo came out garbled? Type the lines out. Typed text leaves no smudge for the AI to read as a $900 charge.

Where to go next

How to use AI to write a polite email asking about a charge
How to use AI to compare health insurance plans

Filed under Health questions and wellness.