Free Tools for Smarter Medical Billing
AI-driven tools built for doctors and billing teams — search codes, decode denials, calculate revenue, and get instant coding guidance.
⭐ All Tools
ICD-10 Code Search
Search all 74,000+ ICD-10-CM diagnosis codes instantly. Live data from CMS.gov — always current, always accurate.
- ✓Search by code or condition name
- ✓Billable vs non-billable indicator
- ✓Live CMS.gov data — updated annually
- ✓Body system classification
Smart Billing Assistant NEW
Enter any CPT code and get instant AI-generated guidance — ICD-10 codes, modifiers, billing rules, and audit alerts.
- ✓Works for every single CPT code
- ✓Recommended DX codes with explanations
- ✓Required and optional modifiers
- ✓Audit alerts and denial prevention tips
PA Check — Prior Auth Lookup
Instant prior authorization lookup for any CPT code across 30+ insurers. 500+ codes, 25 specialties — no login needed.
- ✓500+ CPT codes · 30+ payers
- ✓Florida Blue, Premera, Regence & more
- ✓Turnaround time & approval rates
- ✓Updated June 2026 payer policies
Revenue Leakage Calculator
Find out exactly how much money your practice is losing every month to claim denials, undercoding, and missed billing opportunities.
- ✓Calculate lost revenue instantly
- ✓Denial & undercoding breakdown
- ✓Actionable recovery recommendations
- ✓No signup needed — instant results
Denial Code Lookup
All 358 CARC denial codes with step-by-step resolution guides — search by code number, keyword, or filter by type.
- ✓All 358 CARC denial codes
- ✓Step-by-step resolution guides
- ✓Filter by CO, PR, OA, PI type
- ✓Instant keyword search
RCM Cost Truth Calculator
Compare all 4 billing models — % of collections, flat-fee, hybrid, and true in-house cost — against your real practice numbers.
- ✓All 4 billing models compared
- ✓Hidden cost breakdown included
- ✓Break-even chart & analysis
- ✓Unbiased & neutral results
Policy Peek — Temporarily Unavailable
We took Policy Peek offline after a data-verification review found that its policy records could not be reliably verified against the CMS Medicare Coverage Database.
- iFor current coverage information, use the CMS Medicare Coverage Database
AuditGuard — Billing Compliance Audit
Screen your practice for CMS audit risk using real MUE edits, NCCI pairs, OIG Work Plan targets, and PUF specialty benchmarks — free and 100% browser-only.
- ✓820-code MUE table · 302 NCCI pairs
- ✓OIG Work Plan FY 2024–2025 targets
- ✓PUF p75/p90 specialty benchmarks
- ✓No data sent — runs entirely in browser
NPI Provider Lookup & Scanner
Complete NPI profile from 4 federal databases in one instant search — NPPES registry, OIG exclusion status, Medicare enrollment, and Sunshine Act payment history.
- ✓NPPES registry & OIG exclusion check
- ✓Medicare enrollment · PECOS data
- ✓Open Payments — Sunshine Act history
- ✓Hospital affiliations & license numbers
Superbill Creator
Build print-ready superbills for any specialty in under 5 minutes. Live ICD-10-CM 2026 search, CPT entry, modifiers, 60+ payers, and fee calculation — all in one free tool.
- ✓Live CDC ICD-10-CM 2026 — 74,719 codes
- ✓CPT manual entry + paste multiple codes
- ✓60+ payers · 40+ POS codes · 36 modifiers
- ✓Units × fee calc · Print or save as PDF
Telehealth Billing Code Checker
Instantly verify which CPT and HCPCS codes are billable for telehealth, plus the correct modifiers and place-of-service codes for every major payer.
- ✓Telehealth-eligible CPT & HCPCS codes
- ✓Correct modifiers — 95, GT, GQ, FQ
- ✓POS code guidance (02 vs 10)
- ✓Payer-specific telehealth rules
Timely Filing Limits & Deadline Calculator
Look up timely filing limits for Medicare, state Medicaid programs, TRICARE and VA, each linked to its official source, and calculate the deadline for a date of service.
- ✓Medicare and 45 state Medicaid rules
- ✓Deadline from a date of service
- ✓Custom limit from your contract
- ✓Official source for every rule
Medical Billing Modifiers Lookup
Search every HCPCS Level II modifier from CMS’s current file, read plain-English guides to common CPT modifiers, and compare modifiers such as 25 vs 59 and JW vs JZ.
- ✓384 HCPCS Level II modifiers from CMS
- ✓23 CPT modifier guides in plain English
- ✓Six side-by-side comparisons
- ✓CMS source on every entry
Anesthesia Billing Units Calculator
Calculate total billable anesthesia units in seconds — base units, time units, and qualifying circumstances combine into a payer-ready total.
- ✓Base unit lookup by CPT code
- ✓Automatic time-unit conversion
- ✓Qualifying circumstance add-ons
- ✓Payer-ready total units & reimbursement
CDT Code Lookup — Dental Billing
Search all 787 CDT dental procedure codes with full billing detail — documentation checklists, denial reasons, frequency limits, and PA status. Updated for CDT 2026.
- ✓All 787 CDT codes — 13 categories
- ✓Denial reasons & documentation tips
- ✓Frequency limits & PA status per code
- ✓CDT 2026 edition — 31 new codes
Physician True Hourly Rate Calculator
Find out what your time is really worth after overhead, net collections, and unbillable admin time — plus which lever to pull first to fix it.
- ✓True hourly rate vs. what you assume you make
- ✓Specialty benchmarks for collections & overhead
- ✓Ranked $-impact levers to focus on first
- ✓Delegate-or-DIY task calculator built in
Patient Responsibility Calculator
Estimate a patient’s expected out-of-pocket responsibility using allowed amount, deductible, coinsurance, copay, and out-of-pocket maximum inputs.
- ✓Deductible, coinsurance & copay in one estimate
- ✓Out-of-pocket maximum applied to covered cost sharing
- ✓Noncovered charges reported separately
- ✓Runs in your browser — nothing is stored or sent
Primary vs Secondary Insurance Finder
Work out which coverage pays first when a patient has more than one payer — Medicare with an employer plan, COBRA, Medicaid, TRICARE, VA, accident coverage, or a child on both parents’ plans.
- ✓Payer order with the rule and its source
- ✓Medicare secondary payment calculator
- ✓ESRD 30-month coordination period dates
- ✓Secondary claim and COB denial workflow
Prior Authorization Deadline Finder
How long the payer actually has to decide — by program, by standard or expedited request, and by medical service or drug, with the regulation behind each answer.
- ✓Medicare Advantage, Medicaid, CHIP, marketplace & commercial
- ✓2026 federal timeframes, with the drug exclusions
- ✓Extensions, and what to do when the deadline passes
- ✓Every rule linked to its regulation
Marketplace Plan ID Crosswalk
Paste a 2025 Marketplace plan ID and see the 2026 plan CMS maps it to, the issuer, and the reason it changed — the usual cause of January eligibility rejections.
- ✓7,077 plan pairs from the CMS crosswalk file
- ✓1,922 pairs move to a different issuer entirely
- ✓Flags plans with no default renewal at all
- ✓Reason codes decoded into plain English
Marketplace Issuers by County
See which ACA issuers filed a service area in your county for 2026, with direct links to each one’s own provider network directory.
- ✓1,959 state and county service areas
- ✓548 networks with published directory links
- ✓Statewide filings shown separately
- ✓Useful before a credentialing approach
Specialty to Taxonomy Crosswalk
Find every NPPES taxonomy code CMS accepts for a Medicare specialty, and every specialty a taxonomy code is valid for. Mismatches get enrolment applications returned.
- ✓562 accepted pairings, CMS August 2026 release
- ✓84 taxonomies valid for more than one specialty
- ✓One code is accepted for eight specialties
- ✓Search in either direction
NDC to HCPCS Crosswalk
Enter the NDC from the vial and get the J-code to bill, the dosage that code represents, and the billing units for that package — the number that causes most drug claim denials.
- ✓7,378 NDC to HCPCS pairs, straight from CMS
- ✓Billing units per package, worked out for you
- ✓Search by NDC, brand name or manufacturer
- ✓Dashes optional — matched on digits
Medicare Part B Drug Payment Limits
Check what Medicare pays for any Part B drug code this quarter, with the code dosage, the coinsurance percentage and the patient share per unit.
- ✓893 Part B drug codes, updated quarterly
- ✓Patient share calculated from the published rate
- ✓Flags the 7 codes not payable under Part B
- ✓Shows the effective quarter from the file itself
Insurance Claim Denial Rates by Payer
Look up the real in-network denial rate, appeal overturn rate and denial reasons for any insurer on the federal Marketplace — calculated from the CMS Transparency in Coverage file for 2026.
- ✓158 issuers, 451 million claims, straight from CMS
- ✓In-network and out-of-network rates side by side
- ✓Appeal overturn rates — a third of appeals win
- ✓Ten reported denial reasons per issuer
Ordering & Referring Eligibility Check
Enter an NPI and see whether that provider may order or refer — separately for Part B, DME, home health, power mobility and hospice, because a claim is denied on the one marked No.
- ✓All five benefit categories, not just “on the list”
- ✓Medicare revalidation due dates, every enrollment
- ✓Opt-out status and ordering eligibility
- ✓Read live from CMS, refreshed twice a week
🛠️ More Tools Coming Soon
Billing Audit Scorecard
Answer 20 questions and get your billing health score out of 100 with recommendations.
Coming SoonHIPAA Compliance Checklist
Interactive audit checklist with pass/fail scoring to keep your practice protected.
Coming SoonE&M Level Calculator
Select the correct Evaluation & Management code based on MDM complexity and time.
Coming SoonModifier Lookup Tool
Full guide to every CPT modifier — what it means and exactly when to use it.
Coming SoonWhy Doctors Trust CureAdvantage Tools
Every tool is built specifically for medical billing — not generic, not watered down.
Frequently Asked Questions
Quick answers about using CureAdvantage’s free medical billing tools.
Are these medical billing tools really free to use?
Yes. Every tool on this page is 100% free with no login, no credit card, and no usage limits. CureAdvantage builds these tools to help billing teams and physicians work faster, and they’ll stay free.
How current is the code data (ICD-10, CPT, CDT, denial codes)?
ICD-10-CM data is pulled from the live CMS.gov database and reflects the current annual code set. CDT dental codes follow the current edition, and denial code guidance is reviewed and updated as CMS and payer policies change.
Do I need to create an account or enter patient information?
No account is required for any tool. None of the calculators or lookups ask for patient-identifiable information — you’re only working with codes, payer names, and practice-level numbers.
How accurate is the AI-generated billing guidance?
The Smart Billing Assistant and similar AI-powered tools are meant to speed up research and flag common issues, not replace your billing team’s judgment or your payer’s official policy. Always confirm high-stakes decisions against the payer’s current guidelines.
Which tool should I start with?
If you’re chasing denials, start with the Denial Code Lookup or PayerGrade. If you’re trying to stop revenue loss before it happens, the Revenue Leakage Calculator and Claim Filing Deadline Checker are the best first stops.
Need more than these tools?
Browse our free guides, checklists, and reference sheets — written by certified billing specialists.