Public tools for healthcare billing
Browse, search, and use. All tools are free and publicly accessible. API access for programmatic use requires a free API key.
Knowledge Network
Search 3,400+ payer rules in one place
Searchable directory of payer rules, filing deadlines, appeal processes, GPCI values, MAC jurisdictions, and facility type requirements. Browse by payer, state, or rule category.
Capabilities
- Filing deadlines per payer
- Appeal levels and processes
- Prior auth requirements
- GPCI values by area
- MAC jurisdiction lookup
- Rule change subscriptions
Payment Calculator
RVU × GPCI × CF = expected payment
Enter a CCN and CPT code — see the full MPFS breakdown with GPCI adjustments. Compare facility vs non-facility rates, toggle between years, and run bulk calculations.
Capabilities
- Facility vs non-facility rates
- GPCI-adjusted calculations
- Year-over-year comparison
- Bulk CPT calculations
- Shareable result links
- Side-by-side facility comparison
Denial Code Inspector
Paste a denial code. Get what to do next.
Enter CARC and RARC codes from an ERA — get a plain-English explanation, the common root cause, and an actionable appeal strategy with payer-specific deadlines.
Capabilities
- CARC + RARC interpretation
- Payer-specific appeal rules
- Appeal letter templates
- Bulk denial analysis
- Root cause identification
- Success probability estimate
Billing Rules Network
The open reference for billing codes
Open catalog of Type of Bill codes, Place of Service codes, modifiers, NCCI edits, and revenue codes — searchable and cross-referenced with real-world usage patterns.
Capabilities
- TOB code lookup
- POS code reference
- Modifier requirements
- NCCI edit checker
- Revenue code catalog
- Cross-referenced relationships
CCN Resolver
Paste a CCN. See everything about that facility.
Enter any Medicare provider number and see the complete billing context — from geographic location through payment system to the codes and rates that apply there.
Capabilities
- Full L1-L6 breakdown
- GPCI values for location
- Payment system identification
- Billing form determination
- Available care settings
- Deep resolution with CPT + payer
Rule Change Feed
Know before your claims get denied
Track payer rule changes, CMS fee schedule updates, new NCCI edits, and coding changes. Subscribe via webhook, RSS, or email — get notified before changes take effect.
Capabilities
- CMS fee schedule updates
- Payer policy changes
- NCCI edit changes (quarterly)
- New/deleted CPT codes
- Timely filing changes
- Severity-rated alerts
NPI Lookup
Find any provider. Get their billing context.
Search the NPPES National Provider Identifier registry by NPI number, name, organization, taxonomy, or location — enriched with RCI's billing knowledge layer. NPI → CCN → L1-L6 knowledge in one lookup.
Capabilities
- Powered by CMS NPPES API v2.1
- Search by NPI, name, org, taxonomy
- RCI enrichment: GPCI, MAC, payment system
- NPI → CCN facility linkage
- Full L1-L6 resolution with CPT
- Bulk provider lookup via API
ProFee Coder
Like AAPC Codify. But free. With an API.
RVU lookup from CMS MPFS with GPCI adjustments, NCCI edit checker for up to 50 code pairs, LCD/NCD policy lookup, modifier crosswalks, and Medicare fee schedules — all with year toggling. What Codify charges $480/year for.
Capabilities
- RVU lookup with GPCI adjustment
- Year toggle (2024-2026)
- NCCI edits + MUE data (50 codes)
- LCD/NCD lookup with covered ICD-10s
- Modifier crosswalk + payment impact
- MPFS, DMEPOS, CLAB fee schedules
Facility Coder
Like Find-a-Code. But free. With an API.
DRG lookup with weights, length of stay, and payment calculator per facility. APC lookup with OPPS payment by CBSA. Status indicators, DRG grouper logic, and revenue code validation. What Find-a-Code charges a subscription for.
Capabilities
- DRG codes, weights, LOS, payment calc
- APC codes, weights, OPPS payment by CBSA
- Status indicator reference
- DRG grouper: Dx + Px → DRG
- Revenue code + TOB validation
- Wage index adjustments per facility
Code Crosswalk
Map between CPT, HCPCS, and ICD-10. Instantly.
Enter a CPT code — see related HCPCS codes, commonly paired ICD-10 diagnoses, LCD-required pairings, and plain-English lay terms. Works in both directions. Bulk mode available.
Capabilities
- CPT → HCPCS (drug + admin pairing)
- CPT → ICD-10 (common + LCD-required)
- ICD-10 → CPT (reverse lookup)
- Lay term lookup for any code
- Frequency data for code pairs
- Bulk crosswalk via API