G9549 HCPCS Level II code: Documentation of medical reason(s) that follow-up imaging is indicated (e.g., patient has lymphadenopathy, signs of metastasis or an active diagnosis or…
G9549 is the HCPCS code for “Documentation of medical reason(s) that follow-up imaging is indicated (e.g., patient has lymphadenopathy, signs of metastasis or an active diagnosis or history of cancer, and other medical reason(s))” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G9549Documentation of medical reason(s) that follow-up imaging is indicated (e.g., patient has lymphadenopathy, signs of metastasis or an active diagnosis or history of cancer, and other medical reason(s))
Short description: Doc med rsn for f/u imag
HCPCS · United States
Medicare details
The indicators CMS publishes with G9549 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Undefined codes
- Added
- Jan 1, 2016
Where G9549 sits
- 1G codesProcedures and professional services
- 2Active code G9549Documentation of medical reason(s) that follow-up imaging is indicated (e.g., patient has lymphadenopathy, signs of metastasis or an active diagnosis or history of cancer, and other medical reason(s))
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code G9549 mean?
G9549 is the HCPCS code for “Documentation of medical reason(s) that follow-up imaging is indicated (e.g., patient has lymphadenopathy, signs of metastasis or an active diagnosis or history of cancer, and other medical reason(s))” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G9549?
CMS lists G9549’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside G9549
All G codesG9541Filter removed within 3 months of placementG9542Documented re-assessment for the appropriateness of filter removal within 3 months of placementG9543Documentation of at least two attempts to reach the patient to arrange a clinical re-assessment for the appropriateness of filter removal within 3 months of placementG9544Patients that do not have the filter removed, documented re-assessment for the appropriateness of filter removal, or documentation of at least two attempts to reach the patient…G9547Cystic renal lesion that is simple appearing (bosniak i or ii) , or adrenal lesion less than or equal to 1.0 cm or adrenal lesion greater than 1.0 cm but less than or equal to…G9548Final reports for imaging studies stating no follow-up imaging is recommendedG9550Final reports for imaging studies with follow-up imaging recommended, or final reports that do not include a specific recommendation of no follow-upG9551Final reports for imaging studies without an incidentally found lesion notedG9552Incidental thyroid nodule < 1.0 cm noted in reportG9553Prior thyroid disease diagnosisG9554Final reports for ct, cta, mri or mra of the chest or neck with follow-up imaging recommendedG9555Documentation of medical reason(s) for recommending follow up imaging (e.g., patient has multiple endocrine neoplasia, patient has cervical lymphadenopathy, other medical…