Audit Hospital Bills for Errors

Step-by-Step Checklist

1. Request a Detailed Itemized Bill

   Send a written request for an itemized bill with CPT/HCPCS codes, dates of service, and unit counts. Hospitals must provide this under federal transparency rules and most state laws.

2. Cross-Reference Against Your Medical Records

   Match every charge to a documented service. Flag medications, supplies, and procedures you did not receive or were charged twice for.

3. Identify Unbundling and Upcoding

   Unbundling occurs when a package code (e.g., a surgical bundle) is broken into individual component charges. Upcoding assigns a higher-paying code than the service warranted.

4. Negotiate or Appeal

   Submit a written dispute with evidence. Request charity care, financial assistance, or a prompt-pay discount. If denied, appeal to the hospital's patient advocate and then the state insurance commissioner or attorney general.

Legal Grounds

• 42 U.S.C. § 1395dd — EMTALA requires medical screening and stabilization
• CMS hospital price transparency rules (45 C.F.R. § 180)
• State consumer protection statutes prohibiting deceptive billing
• No Surprises Act good-faith estimate requirements for non-emergency services

Sample Letter Excerpt

I request a complete itemized bill with CPT/HCPCS codes, dates, units, and chargemaster rates for services rendered between [dates]. I dispute charges for [items] as they were not received or are duplicates. Please correct and reissue within 30 days.

Frequently Asked Questions

Can a hospital charge me for a private room if I didn't request one?

Generally no — if you were placed in a semi-private room and charged for a private room without consent, that is a correctable billing error. Document your room assignment from the admission records.

What is 'unbundling' in medical billing?

Unbundling is billing separately for procedure components that should be billed under a single comprehensive code. For example, charging separate codes for incision, drainage, and closure when a single surgical package code covers all three.