Medicare Advantage, Part D, Medicaid

CMS Anesthesia Base Units (00100-01999)

medicare_silver.dim_anesthesia_base_unit·live·dim

Rows

1,933

Columns

History

N/A

Card

nocolumns only

Typed tools

What it is

1The standalone CMS Anesthesia Base Units schedule (Anesthesiologists Center ZIPs).
2Base units are the fixed leg of Medicare anesthesia payment: payment = (base_units + time_units) x anesthesia_conversion_factor.
3SEPARATE schedule - never in the PFS PPRRVU RVU file (those anesthesia rows carry status indicator J, RVU=0).
4A code absent from this table is 'not anesthesia-priced', not $0.
5Qualifying-circumstance codes (99100/99116/99135/99140) are NOT in the CMS file. calendar_year is the CMS PUBLICATION year;
6CMS republishes only in change years and states values are 'unchanged for CY 20xx' otherwise, so each vintage GOVERNS every service year until the next published file (encoded in effective_period_start/end): CY2014 governs 2014-2017, CY2018 governs 2018-2021, CY2022 governs 2022 onward.

Grain

Key	Grain
N/A	1One row per (hcpcs_code, calendar_year) - the integer anesthesia base-unit count for each anesthesia CPT code, per CMS publication year.

Columns (18)

Column	Type	Meaning
`hcpcs_code`	string
`calendar_year`	int
`base_unit`	int
`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

describe_data_source(source_fqn="medicare_silver.dim_anesthesia_base_unit")     # the card, live
query_substrate(sql="SELECT * FROM medicare_silver.dim_anesthesia_base_unit WHERE <filter> LIMIT 100")

Item	Value
Typed tools that read it	none; raw SQL
Identity key	`hcpcs_code,calendar_year`
Join	`how_to_join(source_fqn="medicare_silver.dim_anesthesia_base_unit")`
Raw door	Athena (read-only via query_substrate): medicare_silver.dim_anesthesia_base_unit - as-of a service year, use the row whose effective_period_start/end spans it (equivalently max(calendar_year) <= service_year).
Note	Iceberg medicare_silver.dim_anesthesia_base_unit, partition by calendar_year, supersession=replace. Runner pipelines/medicare/ingest/anesthesia_base_unit_runner.py; CLI python -m pipelines.curated build-anesthesia-base-unit (worker build_anesthesia_base_unit).

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