G9557 – Final reports for ct, cta, mri or mra studies of the chest or neck without an incidentally found thyroid nodule < 1.0 cm noted or no nodule found

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

Active code Carrier judgment

HCPCS codeG9557
Long description
Final reports for ct, cta, mri or mra studies of the chest or neck without an incidentally found thyroid nodule < 1.0 cm noted or no nodule found
Short description
Ct/cta/mri/a no thyr <1.0cm
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, 2016
Last change
January 1, 2022 – No change

Frequently asked questions

What is HCPCS code G9557?

G9557 is a HCPCS Level II code for final reports for ct, cta, mri or mra studies of the chest or neck without an incidentally found thyroid nodule < 1.0 cm noted or no nodule found.

Does Medicare cover G9557?

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.