# Medicare CLFS Private Payer Rates and Volumes (PAMA)

`medicare_silver.fact_clfs_private_payer_rate` · Medicare Advantage, Part D, Medicaid · status live · 7,515,432 rows

The PAMA "applicable information" — private-payer rates and volumes labs report to CMS, per HCPCS. A RARE public private-rate signal (distinct from the standard CLFS fee schedule `medicare_clfs`). The CMS-computed weighted median of these sets the CLFS; this is the underlying per-observation distribution.

**Grain.** One row per reported (collection_year, row_seq) private-payer rate/volume observation, keyed to HCPCS.

| column | type | meaning |
|---|---|---|
| collection_year | int |  |
| row_seq | bigint |  |
| hcpcs_cd | string |  |
| private_payer_rate | double |  |
| volume_text | 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_clfs_private_payer_rate WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.fact_clfs_private_payer_rate")` first.