# CMS QHP Enrollee Survey PUF — nationwide reporting-unit survey history

`medicare_silver.fact_enrollee_survey_puf_history` · Insurer negotiated rates · status live · 1,586 rows

CMS nationwide Exchange enrollee-experience results for PY2022-PY2026, preserving publication year, survey year, prior experience period, four exact ordered-header eras, incomplete/missing dictionary provenance, raw blank/dot/count/score semantics, and container-versus-data-unit revision identity.

**Grain.** One publisher wide row within one immutable year-qualified data unit, with mandatory row_kind separating issuer-state-product reporting units from the annual National row; 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_enrollee_survey_puf_history WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.fact_enrollee_survey_puf_history")` first.