Billing Guides
Practical guides to check your bills for errors and dispute them — medical, utility, phone, internet, insurance, and more.
How to Dispute Any Bill: A Universal Step-by-Step Guide
Dispute any billing error for free — medical, utility, phone, insurance. Scripts, letter templates, escalation paths, and your legal rights.
Read guideHow to Check Your Medical Bill for Errors (Step-by-Step)
80% of medical bills have errors. Use this free step-by-step guide to spot overcharges, duplicate charges, and coding mistakes on your hospital bill.
Read guideHow to Check Your Utility Bill for Errors (Electricity, Gas, Water)
Free guide to common utility billing errors — estimated reads, wrong rate tiers, duplicate charges, and fees for services you never used. No signup required.
Read guideHow to Check Your Phone or Internet Bill for Errors
Free guide to spot cramming, verify plan rates, catch post-cancellation charges, and understand every fee on your phone, internet, or cable bill.
Read guideMedical Bill Dispute Letter: Free Template + What to Say
Free dispute letter template for medical billing errors — fill-in fields, phone script, and step-by-step instructions. No signup required.
Read guideHow to Read an Itemized Medical Bill (Every Field Explained)
Free guide to reading your itemized medical bill. Learn what every column, code, and charge means — with an annotated sample bill and a 6-point checklist.
Read guideThe Complete Guide to Medical Billing Errors (2026)
Free complete guide to medical billing errors: types, causes, how to detect them, your legal rights, and how to dispute them. No signup required.
Read guideMedical Bill Rights by State: Your Complete Guide (2026)
Free guide: balance billing laws, prompt pay requirements, itemized bill rights, and medical debt protections in all 50 states and DC.
Read guideHow to Dispute a Cable or Internet Bill
Free guide to dispute cable and ISP overcharges — promo rate hikes, equipment fees, data cap surcharges, hidden fees, and your FCC rights.
Read guideCommon Cell Phone Bill Errors and How to Fix Them
Free guide: cramming, unauthorized insurance charges, roaming errors, ghost lines, and overages on unlimited plans — find and fix cell phone billing errors.
Read guideHow to Dispute a Utility Bill (Electric, Gas, Water)
Free step-by-step guide to dispute utility billing errors — estimated reads, wrong rate tiers, unreturned deposits, and the PUC complaint process.
Read guideCommon Electric Bill Errors and How to Find Them
Free guide to electric bill errors — meter reading mistakes, rate tier misclassification, solar net metering errors, demand charges, and TOU rate problems.
Read guideHow to Read a Phone Bill Line by Line
Free guide: every line item on your phone bill explained — plan charges, line access fees, device payments, taxes, surcharges, and what's negotiable.
Read guideTelecom Billing Errors: Your Rights and How to Dispute
Your rights under FCC Truth in Billing rules, the TVPA, FCBA, and state law — plus the FCC complaint process and dispute timelines. Free guide.
Read guideCommon Insurance Billing Errors and How to Dispute Them
Free guide: coding errors, in-network billed as out-of-network, duplicate claims, COB mistakes, and deductible errors — how to identify and appeal.
Read guideCommon ER Bill Errors and How to Catch Them
Free guide: facility fee double billing, ER level upcoding, observation vs inpatient, surprise out-of-network physicians, and No Surprises Act protections.
Read guideAmbulance Billing Errors: What to Look For
Free guide: ALS vs BLS level billing, mileage overcharges, balance billing from out-of-network ambulances, and No Surprises Act protections.
Read guideCommon Childbirth Hospital Bill Mistakes
Free guide: vaginal vs C-section billing errors, nursery charges for rooming-in, epidural mistakes, unbundled labs, and duplicate charges during labor.
Read guideMRI and CT Scan Billing Errors: What Patients Should Know
Free guide: facility vs professional fee confusion, contrast code mix-ups, wrong body part coded, duplicate reads, and hospital vs freestanding pricing.
Read guidePhysical Therapy Billing Errors: What Patients Should Know
Free guide: timed vs untimed codes, 8-minute rule violations, PTA vs PT billing, re-evaluation upcoding, and group therapy billed as individual.
Read guideMental Health Billing Errors: What Patients Should Know
Free guide: psychotherapy time-based code errors, parity violations, surprise billing, wrong credentials, and telehealth billing mistakes.
Read guideColonoscopy Billing Errors: What to Watch For
Free guide: the screening-to-diagnostic trap, polyp removal coding, anesthesia charges, facility fees, and ACA preventive care billing rules.
Read guideKnee and Hip Replacement Billing Errors
Free guide: bundled vs unbundled surgical charges, implant upcharges, PT during hospital stay, assistant surgeon fees, and post-surgical double billing.
Read guideFuneral Costs: Your Rights Under the FTC Funeral Rule
Free guide: how funeral billing works, your FTC Funeral Rule rights, common overcharges and errors, and how to check and dispute a funeral bill.
Read guideWhat Is a CPT Code? A Guide for Patients
CPT codes are 5-digit billing codes on every medical bill. Learn what they mean, how to look them up, and how wrong codes can cost you hundreds.
Read guideWhat an NCCI Edit Means for Your Bill
NCCI edits are Medicare bundling rules that prevent double billing. If your bill has two codes that shouldn't both appear, you may have been overcharged.
Read guideFree tools
Use these alongside our guides to check your bills and generate disputes -- all free, no account required.