# Data Lake

- [Data Dictionary](https://docs.payerset.com/data-lake/data-dictionary.md): Detailed descriptions of field names from Payer Price Transparency Machine-Readable files.
- [Payer Transparency (TiC)](https://docs.payerset.com/data-lake/data-dictionary/payer-transparency-tic.md): Data dictionary for the Payer Transparency in Coverage data for medical services. Below are the fields available for Data Lake customers.
- [Hospital Transparency](https://docs.payerset.com/data-lake/data-dictionary/hospital-transparency.md): Data dictionary for the Hospital Price Transparency data for medical and pharmaceutical services. Below are the fields available for Data Lake customers.
- [Employer Reporting Plans](https://docs.payerset.com/data-lake/data-dictionary/employer-reporting-plans.md): This dataset contains mappings of Payers and EIN values to the health plans they have (Reporting Plans) values based on the Transparency in Coverage data across our available payers.
- [EIN to NPI Map](https://docs.payerset.com/data-lake/data-dictionary/ein-to-npi-map.md): These files contain mappings of EIN values to NPI values based on the Transparency in Coverage data across our available payers.
- [Payerset Price Transparency Algorithm](https://docs.payerset.com/data-lake/payerset-price-transparency-algorithm.md)
- [NPI Data from NPPES](https://docs.payerset.com/data-lake/npi-data-from-nppes.md): Data downloaded and stored for convenience, updated quarterly to ensure matching with the Payerset datasets
- [Payerset Billing Code Classification](https://docs.payerset.com/data-lake/payerset-billing-code-classification.md): The Payerset Billing Code Classification™ is a classification of over 18,000 medical billing codes, covering CPT, HCPCS, and MS-DRG code types, with standardized names, categories, and subcategories.
- [Taxonomy Data from NUCC](https://docs.payerset.com/data-lake/taxonomy-data-from-nucc.md): National Uniform Claim Committee (NUCC) Taxonomy Mapping Datase


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