NEVVI Medicare utilization intelligence
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Market snapshot

Nationwide CY2024

Medicare Part B FFS · CY2024 · as published by CMS
94450 Test to measure lung function response to low oxygen CPT · Pulmonary test
Classification Test Pulmonary Pulmonary Function Testing (CMS RBCS)
First observed 2013 — start of our 12-year window; the code predates it
National scale 1,391 services · est. ▲ 16.5% YoY · 593 FFS beneficiaries (CY2024, all-Medicare estimate) — 694 observed fee-for-service services
CMS descriptor · RBCS classification · Medicare Part B physician/supplier claims, 12-year window
Data year: CY2024 CY2023 CY2022 locked column CY2021 locked column CY2020 locked column
Market overview

Nationally, 1 billing group and 3 clinicians bill 94450 — ~1,391 all-Medicare services · est. (694 observed FFS), and volume is up 16.5% year over year.

Market Brief 94450
The whole of 94450, written up and sourced.

The Brief is a national document for 94450. Its findings page carries one finding per chapter, each opening the chapter that prints its figure and the table behind it — like these, from the United States, CY2024, the market on this page.

  1. 1Size and growth. The national market for 94450 ran ~1,391 all-Medicare services (estimated), 694 observed fee-for-service in CY2024. The market is up 16.5% year over year. 1 billing group and 3 clinicians bill it.
Estimated all-Medicare volume estimate
FFS + estimated MA

~1,391 services

694 observed fee-for-service (50%) · ~697 estimated Medicare Advantage.

Billing for this code concentrates in one state — scaled by the national payer mix (FFS share as of 2024) — scaled estimate — assumes MA utilization mirrors FFS; not an observation. How we scale
Average charge

$149

per service, submitted list amounts — not payments · observed FFS basis
Charge-to-payment ratio

4.0×

average list $149 vs average Medicare payment $37 per service · basis-independent
Billing groups

1

1 at the ≥11-service disclosure floor
Where the market isobserved FFS services by state · CY2024
MEVTNHWAIDMTNDMNWIILMINYMARIORNVWYSDIAINOHPANJCTCA: 462CAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHIAKTX: 220TXFL: 12FL
Shaded low→high on observed fee-for-service services billed from each state · the /stats tile grid, at national scope. Shading ranks the states rather than spacing them along the range, so neighbouring shades mean adjacent RANKS, not equal gaps — the key names the lowest and highest; each tile carries its own figure.
Which states movedservices per 1,000 FFS beneficiaries · CY2021 → CY2024
CY2021CY2024CA: 0 → 0TX: 0 → 0CA 0TX 00 CA0 TX
One line per state market, 2 drawn; the 2 leading states by volume are in accent, the rest are context lines. Both columns share one scale, so a slope is real change. A RATE against each state’s own fee-for-service population — assumption-free, and no all-Medicare estimate is used or implied. CY2021 is the left period because CY2020 is the pandemic year and a slope off it would read as growth almost everywhere. 1 state with a rate in only one of the two years is not drawn.

Open a state market: CA · TX · FL — the group ranking lives in the Provider groups tab. Territories bill too; the tile grid draws the 50 states and DC.