# CMS IRF PPS CMG Relative Weights (rule data files)

`medicare_silver.fact_irf_pps_cmg_weight` · Medicare Advantage, Part D, Medicaid · status live · 8,443 rows

CMS Inpatient Rehabilitation Facility PPS case-mix table — per Case-Mix Group (CMG) x comorbidity tier (1/2/3/none): the relative weight, average length of stay, and the official IRF standard payment conversion factor. Sourced from annual IRF PPS rule data files and FY2006 CMS-1290-F Table 4, anchor-VALIDATED against published weights. Reprices IRF claims for the 666 IRFs we roster (dim_irf): payment ~= std_payment_amount x relative_weight x wage index x adjustments. Source-truth coverage is FY2006-FY2026 after the 2026-07-05 effective-period replay, FY2014 recovery, and FY2006 Table 4 recovery.

**Grain.** One row per (fiscal_year, effective_period_start, effective_period_end, CMG, comorbidity tier) — relative weight + ALOS + standard payment amount.

| column | type | meaning |
|---|---|---|
| fiscal_year | int |  |
| cmg | string |  |
| tier | string |  |
| cmg_description | string |  |
| relative_weight | double |  |
| avg_los | double |  |
| std_payment_amount | double |  |
| 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_irf_pps_cmg_weight WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.fact_irf_pps_cmg_weight")` first.