# CMS Nationwide QRS PUF — Exchange reporting-unit quality history

`medicare_silver.fact_nationwide_qrs_puf_history` · Insurer negotiated rates · status live · 1,986 rows

CMS Nationwide Quality Rating System results across PY2019-PY2026 at issuer-state-product-type reporting-unit grain, preserving seven exact schema eras, ratings-year semantics, raw field-qualified publisher codes, dictionary matrices, and container-versus-data-unit revision identity.

**Grain.** One publisher reporting-unit row within one immutable annual CSV data unit, keyed by publication plan year, CSV SHA-256, and one-based source row number; container revisions are retained separately.

| column | type | meaning |
|---|---|---|
| business_year | int |  |
| market_segment | string |  |
| sheet_name | string |  |
| source_row_number | bigint |  |
| worksheet_row_number | bigint |  |
| source_format | string |  |
| source_encoding | string |  |
| ordered_header_json | string |  |
| header_sha256 | string |  |
| column_count | int |  |
| raw_values_json | string |  |
| raw_row_sha256 | string |  |
| artifact_id | string |  |
| source_zip_sha256 | string |  |
| source_zip_bytes | bigint |  |
| final_source_url | string |  |
| archive_member | string |  |
| archive_member_sha256 | string |  |
| archive_member_bytes | bigint |  |
| archive_member_crc32 | string |  |
| archive_inventory_json | string |  |
| expected_artifact_rows | bigint |  |
| publisher_modified_at | string |  |
| publisher_etag | string |  |
| observed_period | date |  |
| asserted_at | date |  |
| effective_period_start | date |  |
| effective_period_end | date |  |
| cms_vintage_sequence | int |  |
| parse_revision | int |  |
| parser_artifact_hash | string |  |
| source_url | string |  |
| sha256_content_hash | string |  |
| source_id | string |  |
| is_current | boolean |  |
| bronze_object_key | string |  |
| s3_version_id | string |  |
| vintage_tag | string |  |
| drug_source_version_id | string |  |

Query it: `query_substrate` with `SELECT ... FROM medicare_silver.fact_nationwide_qrs_puf_history WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.fact_nationwide_qrs_puf_history")` first.