> ## Documentation Index > Fetch the complete documentation index at: https://docs.rcintell.com/llms.txt > Use this file to discover all available pages before exploring further. # Get all layers for a CCN > Get all resolved knowledge layers for a facility identified by CCN. Returns L1 through L6 data without requiring a specific CPT code or payer. Layer data that requires additional context (e.g., L5/L6 need a CPT code) will be omitted or partial. ## OpenAPI ````yaml /docs/openapi.client.json get /v1/knowledge/layers/{ccn} openapi: 3.1.0 info: description: >- Client API for RCIntel. Admin ingest, catalog sync, and internal audit routes are omitted. See Guides → Which API to use. summary: Multi-tenant knowledge API for healthcare revenue cycle management. title: Healthcare Knowledge Layer version: 0.1.0 servers: [] security: [] tags: - description: >- Geographic payer policy lookup (national NCD vs MAC LCD vs state). Query payer, code, state, plan_type. Each row includes geo_scope and document_version. name: policies - description: >- Payer network directory — search payers, check prior auth requirements, view filing rules, denial patterns, and appeal levels. name: payers - description: >- Resolve healthcare billing knowledge across the L1-L6 layer stack. Includes payment calculation, billing guidance, and per-layer queries. name: knowledge - description: >- CMS Fee Schedule lookups — OPPS (Addendum B / APC), DMEPOS (state-level pricing), and Clinical Lab Fee Schedule (CLFS). name: fee-schedules - description: >- NCCI (National Correct Coding Initiative) — dedicated MUE limits, PTP bundling edits, add-on code edits, and code pair validation. name: ncci - description: >- Service code intelligence — CPT/HCPCS lookup, RVU data, NCCI edits, payment calculation, implant/GUDID search, and service group classification. name: codes - description: >- Submit asynchronous AI agent jobs for code research, medical necessity, and denial resolution. Poll for results and retrieve reasoning traces. name: agents - description: >- Register and manage healthcare facilities by CCN (Medicare Provider Number). Each facility is the root entity for knowledge resolution. name: facilities - description: >- NPI Registry — live search against CMS NPPES API for provider and organization National Provider Identifiers. name: npi - description: >- OpenFDA drug product lookup by NDC. Includes product-level fields with normalized ingredient and package detail. name: drugs - description: Health checks, service metadata, and Prometheus metrics. name: system paths: /v1/knowledge/layers/{ccn}: get: tags: - knowledge summary: Get all layers for a CCN description: >- Get all resolved knowledge layers for a facility identified by CCN. Returns L1 through L6 data without requiring a specific CPT code or payer. Layer data that requires additional context (e.g., L5/L6 need a CPT code) will be omitted or partial. operationId: get_all_layers_v1_knowledge_layers__ccn__get parameters: - description: >- 6-digit CMS Certification Number (facility CCN / Medicare provider number). in: path name: ccn required: true schema: title: Ccn type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/KnowledgeResolveResponse' description: All resolved knowledge layers '422': content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' description: Validation Error security: - APIKeyHeader: [] components: schemas: KnowledgeResolveResponse: description: |- Full knowledge resolution result across all applicable layers. ``layers`` + ``payment_estimate`` stay the single-code view (first line) for existing clients. ``dx`` / ``lines`` / ``ncci_*`` are the locked claim-shaped fields. properties: audit_tier: anyOf: - type: string - type: 'null' description: SENTINEL audit tier (green/yellow/red) title: Audit Tier ccn: description: The queried CCN title: Ccn type: string coverage_info: anyOf: - $ref: '#/components/schemas/CoverageInfo' - type: 'null' description: Coverage context if payer was provided dx: description: Normalized claim DX items: type: string title: Dx type: array facility_name: anyOf: - type: string - type: 'null' description: Resolved facility name title: Facility Name layers: description: Resolved L1-L6 layer data items: $ref: '#/components/schemas/LayerData' title: Layers type: array lines: description: Per-line L5/L6/coverage. Empty when no CPT/lines were sent. items: $ref: '#/components/schemas/KnowledgeResolveLineResult' title: Lines type: array ncci_clean: default: true title: Ncci Clean type: boolean ncci_conflicts: items: $ref: '#/components/schemas/NCCIBatchConflict' title: Ncci Conflicts type: array payment_estimate: anyOf: - $ref: '#/components/schemas/PaymentEstimate' - type: 'null' description: Physician RVU estimate for the first line (legacy) required: - ccn - layers title: KnowledgeResolveResponse type: object HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' title: Detail type: array title: HTTPValidationError type: object CoverageInfo: description: Coverage context resolved from payer layer. properties: conditions: items: type: string title: Conditions type: array coverage_status: anyOf: - type: string - type: 'null' description: covered, not_covered, conditional title: Coverage Status lcd_ncd_reference: anyOf: - type: string - type: 'null' description: LCD/NCD policy reference title: Lcd Ncd Reference notes: anyOf: - type: string - type: 'null' title: Notes title: CoverageInfo type: object LayerData: description: Resolved data for a single knowledge layer. properties: data: additionalProperties: true description: Layer-specific resolved data title: Data type: object layer: description: Layer identifier (l1, l2, ... l6) title: Layer type: string source: anyOf: - type: string - type: 'null' description: Data source URL or reference title: Source required: - layer - data title: LayerData type: object KnowledgeResolveLineResult: description: Per-line L5/L6 plus LCD DX match for a claim-shaped resolve. properties: code: title: Code type: string coverage: anyOf: - $ref: '#/components/schemas/PaymentClaimCoverage' - type: 'null' l5: additionalProperties: true title: L5 type: object l6: additionalProperties: true title: L6 type: object line_id: title: Line Id type: string modifier: anyOf: - type: string - type: 'null' title: Modifier place_of_service: anyOf: - type: string - type: 'null' title: Place Of Service units: default: 1 title: Units type: integer required: - line_id - code title: KnowledgeResolveLineResult type: object NCCIBatchConflict: description: A single PTP conflict found within the batch. properties: claim_type: anyOf: - type: string - type: 'null' title: Claim Type code1: title: Code1 type: string code2: title: Code2 type: string col1_proc_cd: anyOf: - type: string - type: 'null' title: Col1 Proc Cd col2_proc_cd: anyOf: - type: string - type: 'null' title: Col2 Proc Cd effective_date: anyOf: - type: string - type: 'null' title: Effective Date is_bundled: default: true title: Is Bundled type: boolean modifier_allowed: anyOf: - type: boolean - type: 'null' title: Modifier Allowed modifier_indicator: anyOf: - type: string - type: 'null' title: Modifier Indicator ptp_rationale: anyOf: - type: string - type: 'null' title: Ptp Rationale required: - code1 - code2 title: NCCIBatchConflict type: object PaymentEstimate: description: Structured payment estimate from knowledge resolution. properties: conversion_factor: anyOf: - type: number - type: 'null' title: Conversion Factor estimated_payment: anyOf: - type: number - type: 'null' description: Estimated Medicare payment in USD title: Estimated Payment methodology: anyOf: - type: string - type: 'null' description: 'Payment system: MPFS, OPPS, etc.' title: Methodology mp_gpci: anyOf: - type: number - type: 'null' title: Mp Gpci mp_rvu: anyOf: - type: number - type: 'null' title: Mp Rvu pe_gpci: anyOf: - type: number - type: 'null' title: Pe Gpci pe_rvu: anyOf: - type: number - type: 'null' title: Pe Rvu pw_gpci: anyOf: - type: number - type: 'null' title: Pw Gpci total_rvu: anyOf: - type: number - type: 'null' title: Total Rvu work_rvu: anyOf: - type: number - type: 'null' title: Work Rvu title: PaymentEstimate type: object ValidationError: properties: ctx: title: Context type: object input: title: Input loc: items: anyOf: - type: string - type: integer title: Location type: array msg: title: Message type: string type: title: Error Type type: string required: - loc - msg - type title: ValidationError type: object PaymentClaimCoverage: description: LCD/NCD vs claim DX for one procedure code. properties: code: title: Code type: string coverage_status: anyOf: - type: string - type: 'null' title: Coverage Status dx_required: default: false title: Dx Required type: boolean lcd_id: anyOf: - type: string - type: 'null' title: Lcd Id matched_dx: items: type: string title: Matched Dx type: array ncd_id: anyOf: - type: string - type: 'null' title: Ncd Id source_url: anyOf: - type: string - type: 'null' title: Source Url required: - code title: PaymentClaimCoverage type: object securitySchemes: APIKeyHeader: in: header name: X-API-Key type: apiKey ````