G9555 — Documentation of medical reason(s) for recommending follow up imaging (e.g., patient has multiple endocrine neoplasia, patient has cervical lymphadenopathy, other medical reason(s))
G9555 is a HCPCS Level II code for documentation of medical reason(s) for recommending follow up imaging (e.g., patient has multiple endocrine neoplasia, patient has cervical lymphadenopathy, other medical reason(s)). It belongs to the Procedures and Professional Services (Temporary) section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusM
Measurement code. Used for reporting purposes only; never paid.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for G9555
- Long descriptor
- Documentation of medical reason(s) for recommending follow up imaging (e.g., patient has multiple endocrine neoplasia, patient has cervical lymphadenopathy, other medical reason(s))
- Short descriptor
- Doc med rsn for follup image
- Added
- January 1, 2016
- BETOS
- Z2
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to G9555
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G9555 is not quite right, the correct code is very often within a few positions of it.
- 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 4.0 cm classified as likely benign by unenhanced ct or washout protocol ct, or mri with in- and opposed-phase sequences or other equivalent institutional imaging protocols
- G9548Final reports for imaging studies stating no follow-up imaging is recommended
- 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))
- G9550Final reports for imaging studies with follow-up imaging recommended, or final reports that do not include a specific recommendation of no follow-up
- G9551Final reports for imaging studies without an incidentally found lesion noted
- G9552Incidental thyroid nodule < 1.0 cm noted in report
- G9553Prior thyroid disease diagnosis
- G9554Final reports for ct, cta, mri or mra of the chest or neck with follow-up imaging recommended
- G9556Final reports for ct, cta, mri or mra of the chest or neck with follow-up imaging not recommended
- G9557Final 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
- G9558Patient treated with a beta-lactam antibiotic as definitive therapyterminated
- G9559Documentation of medical reason(s) for not prescribing a beta-lactam antibiotic (e.g., allergy, intolerance to beta-lactam antibiotics)terminated
- G9560Patient not treated with a beta-lactam antibiotic as definitive therapy, reason not giventerminated
- G9561Patients prescribed opiates for longer than six weeksterminated
- G9562Patients who had a follow-up evaluation conducted at least every three months during opioid therapyterminated
- G9563Patients who did not have a follow-up evaluation conducted at least every three months during opioid therapyterminated
Questions about G9555
What is HCPCS code G9555?
G9555 is a HCPCS Level II code for documentation of medical reason(s) for recommending follow up imaging (e.g., patient has multiple endocrine neoplasia, patient has cervical lymphadenopathy, other medical reason(s)). It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G9555?
The CMS HCPCS file marks G9555 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is G9555 paid under the physician fee schedule?
G9555 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.