aid: waystar url: https://raw.githubusercontent.com/api-evangelist/waystar/refs/heads/main/apis.yml name: Waystar kind: company description: Waystar is a healthcare payments and revenue cycle management (RCM) software company that operates a national clearinghouse connecting providers to payers. Its cloud platform spans financial clearance (eligibility, prior authorization, patient estimation), claim management, payment and remittance management, and denial prevention and recovery. Waystar exposes integration through REST APIs, web services, HL7, sFTP/batch, RPA, and X12 EDI transactions (270/271 eligibility, 276/277 claim status, 837 claims, 835 remittance/ERA, 278 authorization). API access is delivered through a partner/developer program at developer.waystar.com; detailed endpoint specifications, sandbox credentials, and authentication (HMAC-SHA256 / OAuth 2.0) are gated behind registration and a signed partnership, so the API surface below is modeled from Waystar's public product and developer-portal descriptions and the underlying X12 standards rather than from a published OpenAPI definition. image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg tags: - Healthcare - Revenue Cycle Management - RCM - Clearinghouse - Healthcare Payments - Medical Billing - X12 EDI - Eligibility - Claims - Remittance created: '2026-07-04' modified: '2026-07-04' specificationVersion: '0.19' apis: - aid: waystar:waystar-eligibility-verification-api name: Waystar Eligibility Verification API tags: - Eligibility - Benefits - X12 270/271 image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/financial-clearance/eligibility-verification/ properties: - url: https://developer.waystar.com/ type: Documentation - url: https://www.waystar.com/our-platform/financial-clearance/eligibility-verification/ type: SignUp description: Real-time and batch insurance eligibility and benefits verification, exchanging X12 270 inquiries and 271 responses to confirm coverage, plan details, copays, deductibles, and service-type benefits before a visit. Endpoints are modeled from Waystar's Eligibility product and the 270/271 transaction set; concrete paths are provisioned through the partner program. - aid: waystar:waystar-prior-authorization-api name: Waystar Authorization & Referral API tags: - Prior Authorization - Referrals - X12 278 image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/financial-clearance/authorizations/ properties: - url: https://developer.waystar.com/ type: Documentation - url: https://www.waystar.com/our-platform/financial-clearance/authorization-referral-status/ type: Documentation description: Automates prior authorization and referral determination and status, modeled on the X12 278 health care services review request/response. Covers submitting authorization requests, checking auth/referral status, and returning determinations. Waystar layers RPA and payer-portal automation on top of EDI where payers lack a transaction. Modeled from public product docs. - aid: waystar:waystar-patient-estimation-api name: Waystar Patient Estimation API tags: - Patient Estimation - Price Transparency - Financial Clearance image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/financial-clearance/coverage-detection/ properties: - url: https://developer.waystar.com/ type: Documentation description: Produces pre-service, good-faith patient cost estimates by combining eligibility/benefit data, contracted rates, and procedure codes to support price transparency and up-front patient collections. Modeled from Waystar's financial clearance product; not backed by a published OpenAPI definition. - aid: waystar:waystar-claim-management-api name: Waystar Claim Management API tags: - Claims - Claim Submission - X12 837 image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/claim-management/claim-manager/ properties: - url: https://developer.waystar.com/ type: Documentation - url: https://www.waystar.com/our-platform/claim-management/claim-manager/ type: Documentation description: Submits, scrubs, edits, tracks, and manages professional, institutional, and dental claims through Waystar's clearinghouse, modeled on the X12 837P/837I/837D claim transaction set. Includes claim creation, validation against payer edits, submission, and lifecycle management. Endpoints are modeled from the Claim Manager product and 837 standard. - aid: waystar:waystar-claim-status-api name: Waystar Claim Status API tags: - Claim Status - X12 276/277 - Tracking image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/claim-management/claim-monitoring/ properties: - url: https://developer.waystar.com/ type: Documentation description: Queries and monitors claim status across payers, modeled on the X12 276 status inquiry and 277 status response - returning received, accepted, pending, denied, and paid states. Supports both real-time inquiry and automated status monitoring. Modeled from Waystar's claim monitoring product. - aid: waystar:waystar-remittance-era-api name: Waystar Remittance & ERA API tags: - Remittance - ERA - X12 835 - Payment Posting image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/payment-management/remit-manager/ properties: - url: https://developer.waystar.com/ type: Documentation description: Retrieves electronic remittance advice (835/ERA), payments, and adjustments for automated payment posting and reconciliation, with raw X12 835 artifacts and parsed JSON. Modeled on the X12 835 transaction and Waystar's Remit Manager product; concrete endpoints are partner-provisioned. - aid: waystar:waystar-denial-management-api name: Waystar Denial & Appeal Management API tags: - Denials - Appeals - Recovery image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg humanURL: https://www.waystar.com/our-platform/denial-prevention-recovery/denial-recovery/ properties: - url: https://developer.waystar.com/ type: Documentation description: Identifies denied claims, exposes denial and remark codes and explanation-of-benefits detail, and supports appeal creation, packaging, and resubmission workflows. Modeled from Waystar's denial prevention and recovery product; not backed by a published OpenAPI definition. common: - type: VulnerabilityDisclosure url: security/waystar-vulnerability-disclosure.yml - type: DomainSecurity url: security/waystar-domain-security.yml - type: LinkedIn url: https://www.linkedin.com/company/waystar - type: Website url: https://www.waystar.com/ - type: Documentation url: https://developer.waystar.com/ - type: SignUp url: https://www.waystar.com/clients-partners/ - type: Login url: https://www.waystar.com/login/ - type: Plans url: plans/waystar-plans-pricing.yml - type: RateLimits url: rate-limits/waystar-rate-limits.yml - type: FinOps url: finops/waystar-finops.yml - type: Blog url: https://www.waystar.com/feed/ maintainers: - FN: Kin Lane email: kin@apievangelist.com