# AHRQ clinical-reference governed source-asset ledger

`medicare_silver.ahrq_source_asset` · Medicare Advantage, Part D, Medicaid · status live · 176 rows

Content and license ledger for the accepted AHRQ CCSR, Quality Indicator SAS, benchmark PDF, and immutable qi-sas repository corpus, preserving exact URLs, files, bytes, hashes, release identity, and current-release status.

**Grain.** One row per governed corpus snapshot and publisher asset.

| column | type | meaning |
|---|---|---|
| corpus_snapshot_date | date |  |
| asset_id | string |  |
| family | string |  |
| module | string |  |
| release_version | string |  |
| schema_era | string |  |
| asset_status | string |  |
| license_class | string |  |
| asset_url | string |  |
| final_url | string |  |
| file_name | string |  |
| publication_date | date |  |
| byte_count | bigint |  |
| asset_sha256 | string |  |
| bundle_member | string |  |
| source_limit | string |  |
| is_current_release | boolean |  |
| 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.ahrq_source_asset WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.ahrq_source_asset")` first.