# MA county ratebook — CMS plan payment rates by county

`medicare_silver.ma_county_ratebook` · Medicare Advantage, Part D, Medicaid · status live · 42,200 rows

The county BENCHMARK — what CMS pays an MA plan per member in a county, by the county's quality-bonus tier: rate_5pct_bonus / rate_3_5pct_bonus / rate_0pct_bonus, plus rate_esrd. The revenue-rate INPUT for the Wolfe MA model (actual payment ~= benchmark x member risk score x rebate share).

**Grain.** One row per (rate_year, county) — CMS MA county benchmark rates by quality-bonus tier. CERTIFIED 2026-06-03.

| column | type | meaning |
|---|---|---|
| rate_year | int |  |
| ssa_county_code | string |  |
| state_name | string |  |
| county_name | string |  |
| rate_5pct_bonus | float |  |
| rate_3_5pct_bonus | float |  |
| rate_0pct_bonus | float |  |
| rate_esrd | float |  |
| effective_period_start | date |  |
| effective_period_end | date |  |
| source_url | string |  |
| sha256_content_hash | string |  |
| bronze_publication_id | string |  |
| asserted_at | timestamp |  |
| parse_revision | int |  |
| parser_artifact_hash | string |  |
| cms_vintage_sequence | int |  |

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