G9434 – Asthma not well-controlled based on the act, c-act, acq, or ataq score, or specified asthma control tool not used, reason not given

HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)

Active code Carrier judgment

HCPCS codeG9434
Long description
Asthma not well-controlled based on the act, c-act, acq, or ataq score, or specified asthma control tool not used, reason not given
Short description
Asth not controlled
Pricing indicator
00 Not separately priced by Part B (bundled, not covered or Part A only)
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
Z2 Undefined codes
Added
January 1, 2015
Last change
January 1, 2015 – No change

Frequently asked questions

What is HCPCS code G9434?

G9434 is a HCPCS Level II code for asthma not well-controlled based on the act, c-act, acq, or ataq score, or specified asthma control tool not used, reason not given.

Does Medicare cover G9434?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby G codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.