All Tools
9 tools are live right now — free, no login required. The rest of the list below is the roadmap: marked Coming soon until they’re actually built, not linked before then.
ICD-10-CM SearchMost popular
98,000+ diagnosis codes with natural language search
Source: CDC/CMS
ICD-10-PCS LookupComing soon
78,000+ inpatient procedure codes
Source: CMS
HCPCS Level II Search
7,000+ procedure & supply codes (public domain)
Source: CMS
NPI Provider LookupMost popular
8M+ providers — search by name, specialty, location
Source: CMS NPPES
CARC/RARC Lookup
Claim adjustment reason codes and remittance remark codes with plain-English explanations
Source: Original descriptions (codes maintained by X12)
Place of Service Codes
All POS codes with facility vs non-facility distinction
Source: CMS
Revenue Code Lookup
UB-04 revenue codes by number or description
Source: CMS Claims Processing Manual
Taxonomy Code Finder
Interactive specialty → taxonomy code finder
Source: NUCC
Type of Bill Reference
4-digit TOB codes decoded
Source: CMS Claims Processing Manual
Modifier Reference
HCPCS modifiers with usage rules and common mistakes
Source: CMS (HCPCS modifiers only)
Condition / Occurrence / Value CodesComing soon
UB-04 field codes for institutional billing
Source: CMS Claims Processing Manual
DRG LookupComing soon
MS-DRG with relative weights and average length of stay
Source: CMS
NDC Drug Code SearchComing soon
300K+ drug codes — search by name, NDC, or labeler
Source: FDA
SNOMED CT BrowserComing soon
Concept search with hierarchies and ICD-10 crosswalk
Source: NLM/UMLS (free license)
LOINC Code SearchComing soon
Lab test codes with FHIR mappings
Source: Regenstrief (free license)
ICD-10 ↔ HCC CrosswalkRisk adjustmentComing soon
Bidirectional lookup for risk adjustment coding
Source: CMS
ICD-10 ↔ SNOMED CrosswalkComing soon
Map between diagnosis coding and clinical terminology
Source: NLM/UMLS
Medical Necessity CheckerComing soon
CPT code + ICD-10 pair — does it meet LCD/NCD criteria?
Source: CMS LCD/NCD data
CMS-1500 ↔ 837P Field MapComing soon
Visual mapping of paper form to electronic claim
Source: CMS companion guides
UB-04 ↔ 837I Field MapComing soon
Institutional claim field crosswalk
Source: CMS companion guides
837P File ViewerHigh valueComing soon
Upload a professional claim — parsed and color-coded in your browser
Source: Client-side only — no data uploaded
837I File ViewerComing soon
Parse institutional claims into readable format
Source: Client-side only
835 Remittance ViewerHigh valueComing soon
Parse ERA payment files — payments, adjustments, denials
Source: Client-side only — no data uploaded
270/271 Eligibility ViewerComing soon
Parse eligibility request/response files
Source: Client-side only
276/277 Claim Status ViewerComing soon
Parse claim status inquiry and response
Source: Client-side only
834 Enrollment ViewerComing soon
Parse benefit enrollment files
Source: Client-side only
EDI Segment ReferenceComing soon
Interactive, searchable X12 segment dictionary
Source: Original reference content
FHIR R4 Resource ExplorerComing soon
Interactive diagram of all resources and their structure
Source: HL7 (Creative Commons)
FHIR ValidatorComing soon
Paste JSON/XML — validate against base spec or US Core
Source: HL7
FHIR Bundle ViewerComing soon
Upload a Bundle — see resources parsed and linked
Source: Client-side processing
FHIR ↔ Flat File ConverterComing soon
FHIR Bundle to CSV, or CSV to FHIR resources
Source: HL7
US Core Profile ReferenceComing soon
Profiles for real-world US implementations
Source: HL7
EDI → FHIR Mapping GuideCMS-0057-FComing soon
Visual crosswalk — legacy X12 to FHIR
Source: Original content
Synthetic FHIR Data GeneratorProComing soon
Generate realistic patient bundles for testing
Source: HL7 / Synthea
HEDIS Measure ReferenceComing soon
Current-year measures with value sets and gap logic
Source: CMS eCQM specs (public)
CMS Quality Measure ExplorerComing soon
eCQMs, MIPS, ACO measures in one place
Source: CMS
Star Ratings CalculatorComing soon
Input measure rates — estimate Star Rating impact
Source: CMS Star Ratings methodology
HCC Risk Adjustment ExplorerComing soon
HCC codes, RAF components, ICD-10 mappings
Source: CMS
SDOH Z-Code ReferenceComing soon
Social determinants ICD-10 Z-codes by domain
Source: CDC/CMS
Care Gap SimulatorProComing soon
Paste claim history — see which gaps fire
Source: CMS eCQM value sets
Coding Scenario LibraryCodersComing soon
Real-world: patient presents with X — how to code it
Source: Original content
Modifier Decision TreeComing soon
Interactive: which modifier do I use?
Source: Original content based on CMS guidelines
Denial Appeal TemplatesComing soon
Downloadable templates by denial reason
Source: Original content
Timely Filing DeadlinesComing soon
Filing limits by major payer — community-updated
Source: Publicly available payer info
Payer Billing RulesComing soon
Quirks and exceptions by major payer
Source: Publicly available payer info
Medicare Reimbursement EstimatorComing soon
CPT code + locality → estimated payment
Source: CMS MPFS
RVU CalculatorComing soon
Work, PE, and malpractice RVUs with conversion factor
Source: CMS MPFS
COB Logic ToolComing soon
Input payer info — determine billing order
Source: CMS coordination of benefits rules
Credentialing Checklist GeneratorComing soon
Specialty + state → every document needed
Source: Publicly available payer/state requirements
CAQH Profile GuideComing soon
Step-by-step completion walkthrough
Source: Original content
PECOS Enrollment WalkthroughComing soon
Visual Medicare enrollment guide
Source: CMS PECOS documentation
Payer Enrollment DirectoryComing soon
Portals, timelines, contacts by state
Source: Publicly available payer info
OIG Exclusion CheckComing soon
Verify provider against OIG LEIE list
Source: OIG/HHS
HIPAA Quick ReferenceComing soon
Searchable HIPAA guide — plain English
Source: HHS.gov public guidance
CMS Regulation TimelineComing soon
Upcoming deadlines and requirements
Source: Federal Register / CMS.gov
Medicare Fee Schedule LookupComing soon
MPFS data by code and locality
Source: CMS