# Insurance Claims and Clearinghouses Resources ## Knowledge - [CMS: Transactions Overview](https://www.cms.gov/priorities/key-initiatives/burden-reduction/administrative-simplification/transactions) Defines HIPAA administrative transactions and lists the major workflows: eligibility, claims, claim status, remittance, coordination of benefits, enrollment, referrals, and premium payment. Use for: the overall transaction map. - [CMS: Adopted Standards and Operating Rules](https://www.cms.gov/priorities/key-initiatives/burden-reduction/administrative-simplification/hipaa/adopted-standards-operating-rules) Shows which standards apply to which transactions, including ASC X12N 837, 270/271, 276/277, and 835. Use for: confirming standards and compliance scope. - [CMS: Electronic Health Care Claims](https://www.cms.gov/medicare/coding-billing/electronic-billing/electronic-healthcare-claims) Explains how electronic claims move to Medicare Administrative Contractors and how front-end edits, implementation-guide edits, and coverage/payment edits differ. Use for: product state design around validation, rejection, and denial. - [CMS: Professional Paper Claim Form (CMS-1500)](https://www.cms.gov/medicare/coding-billing/electronic-billing/professional-paper-claim-form) Explains professional claim submission and the 837 Professional guide, including the role of vendors, billing services, and clearinghouses. Use for: professional claim workflow and clearinghouse boundaries. - [CMS MLN: Essential Claim Fields for CMS-1500 and 837P](https://www.cms.gov/outreach-and-education/mln/wbt/mln4462429-mln-wbt-1500/1500/lesson05/04/index.html) Maps key CMS-1500 fields to 837P loops for diagnosis, dates of service, place of service, and procedure/service codes. Use for: claim data model discussions. - [CMS MLN: Claim Completion for CMS-1500 and 837P](https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson04/02/index.html) Groups successful professional claim submission data into health care professional/supplier information, patient information, and payer information. Use for: the top-level 837P data buckets. - [CMS MLN: Health Care Professional or Supplier Information](https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson04/06/index.html) Lists provider-side claim fields such as referring or ordering information, service facility, billing provider information, and billing provider NPI. Use for: provider role boundaries. - [CMS MLN: Billing Provider Information](https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson04/13/index.html) Maps billing provider name, address, phone, and NPI to CMS-1500 and 837P fields. Use for: billing provider setup and enrollment-driven validation. - [CMS MLN: Provider and Assignment Details](https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson04/19/index.html) Explains rendering provider NPI reporting and assignment fields. Use for: rendering provider identity and supervision scenarios. - [CMS MLN: Tax ID, Signatures, and Service Facility Locations](https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson04/12/index.html) Explains billing TIN, signatures, service facility location, and service facility NPI fields. Use for: service facility and provider identity validation. - [CMS MLN: Billing Information for CMS-1500 and 837P](https://www.cms.gov/Outreach-and-Education/MLN/WBT/MLN4462429-MLN-WBT-1500/1500/lesson05/02/index.html) Lists billing data elements such as diagnosis, dates of service, procedures, diagnosis pointer, charges, days or units, total charge, and amount paid. Use for: service-line and coding data readiness. - [CMS: Eligibility Inquiry](https://www.cms.gov/medicare/coding-billing/electronic-billing/eligibility-inquiry) Describes the X12 270/271 eligibility system and its use for preparing accurate claims and determining beneficiary liability. Use for: pre-claim workflows. - [CMS: Claim Status Request and Response](https://www.cms.gov/medicare/coding-billing/electronic-billing/claim-status-request-response) Describes 276 claim status requests and 277 responses, including automated posting of status information. Use for: post-submission tracking workflows. - [CMS: Health Care Payment and Remittance Advice](https://www.cms.gov/medicare/coding-billing/electronic-billing/health-care-payment-remittance-advice) Explains ERA, SPR, X12 835, EFT, group codes, CARCs, RARCs, and provider-level adjustments. Use for: payment posting and denial/adjustment workflows. - [CMS: Code Sets Overview](https://www.cms.gov/priorities/key-initiatives/burden-reduction/administrative-simplification/code-sets) Lists HIPAA code sets such as ICD-10, CPT, HCPCS, CDT, and NDC. Use for: understanding claim content dependencies. - [CMS: Operating Rules Overview](https://www.cms.gov/priorities/key-initiatives/burden-reduction/administrative-simplification/operating-rules) Explains operating rules as business rules not defined by the standard or implementation specification, and names CAQH CORE as the authoring entity. Use for: expectations around predictable data exchange. - [CAQH CORE: Operating Rules](https://www.caqh.org/core/operating-rules) Defines operating rules for eligibility, claim status, payment/remittance, claims, acknowledgments, connectivity, and other administrative workflows. Use for: operational requirements beyond raw X12 formats. - [NUCC: 1500 Claim Form Instruction Manual](https://www.nucc.org/index.php/1500-claim-form-mainmenu-35/1500-instructions-mainmenu-42) Maintains the current 1500 claim form instruction manual for standardized professional claim form completion. Use for: professional claim field semantics. - [NUCC: Health Care Provider Taxonomy](https://www.nucc.org/index.php/code-sets-mainmenu-41/provider-taxonomy-mainmenu-40) Defines provider taxonomy codes used in ASC X12N health care transactions and NPI enumeration. Use for: provider specialty and taxonomy fields. - [X12: Glass implementation guide access](https://x12.org/products/glass) Official X12 access point for HIPAA EDI implementation guides referenced by CMS. Use for: deep X12 TR3 detail when syntax-level work becomes necessary. ## Wisdom (Communities) - [WEDI: Workgroup for Electronic Data Interchange](https://www.wedi.org/) Industry group focused on health care electronic data interchange, HIPAA transactions, operating rules, and policy implementation. Use for: practitioner perspectives and implementation workgroups. - [HFMA: Healthcare Financial Management Association](https://www.hfma.org/) Professional association for healthcare finance and revenue cycle management, with community, events, and revenue-cycle guidance. Use for: operational revenue-cycle wisdom beyond standards documents. ## Gaps - Specific clearinghouse API documentation is not selected yet. Future lessons should compare one or two concrete clearinghouses only after the claim lifecycle is understood. - Payer companion guides are not selected yet. They become important when designing payer-specific validation and enrollment workflows.