CPT code 86317: Infectious antibody, quantitative measurement2026 Medicare lab fee · Clinical Laboratory Fee Schedule
This quantitative immunoassay measures antibodies to an infectious agent and is reported when the assay determines antibody quantity rather than a qualitative result.
Medicare pays $14.99 for 86317 under the 2026 Clinical Laboratory Fee Schedule: one national amount, the same in every state and setting.
Medicare lab fee · CLFS 2026 Q4
National CLFS amount
$14.99
In effect since Jan 1, 2026. The same amount in every state, payment locality and setting.
- Geographic adjustment
- None
- Office vs facility
- Same
- Since 2020
- Unchanged
- CMS updates
- Quarterly
Medicare pays the lesser of the lab’s charge and this amount. Patients usually owe no Part B deductible or coinsurance for covered clinical lab tests.
On this page 8 sections
What 86317 covers
This assay uses an immunoassay to quantify antibodies directed against an infectious agent. It is reported when the service measures antibody quantity rather than providing a qualitative or semiquantitative result. The code describes an infectious-agent antibody assay not otherwise identified by a more specific assay code; document the agent and the quantitative test performed. Clinical laboratories perform and report this testing.
Report the quantitative assay performed, with documentation identifying the infectious agent and the nature of the measurement. Medicare pays 86317 through the CLFS only, at one national amount that applies across states and localities without an office-versus-facility difference. The 2026 national CLFS amount is $14.99, unchanged since 2020. The code is excluded from the physician fee schedule.
This summary was written with AI assistance from CMS Clinical Laboratory Fee Schedule data. Amounts on this page come directly from CMS files.
How Medicare pays 86317
Clinical lab tests aren’t priced like physician services. They’re paid from their own fee schedule, with its own rules. See the whole lab fee schedule.
One national amount
CMS sets a single Clinical Laboratory Fee Schedule amount for 86317. There’s no geographic (GPCI) adjustment, so it pays the same in every state and payment locality.
No office or facility rate
Lab tests aren’t built from relative value units, so there’s no office and facility split: the place of service doesn’t change the CLFS amount.
Updated every quarter
CMS republishes the CLFS each quarter. New tests, often proprietary laboratory analyses (PLA codes), join during the year; existing amounts are updated each January.
Excluded from the physician fee schedule
The physician fee schedule lists 86317 with status X (excluded by statute), so the test itself is paid only from the CLFS.
86317 on the lab fee schedule since 2020
86317 · CLFS 2026 Q4 (current)
$14.99
Unchanged since Jan 1, 2020
27 quarterly CLFS releases on file, first CLFS 2020 Q1. A code missing from a quarter wasn’t on that release.
86317 compared with similar tests
- 86318Infectious antibodySingle-step qualitative or semiquantitative$18.09
- Choose 86317 for quantitative antibody measurement; choose 86318 for qualitative or semiquantitative infectious-agent antibody testing.
- 86328COVID-19 antibodySingle-step immunoassay$45.28
- Code 86328 identifies an antibody assay specific to SARS-CoV-2. Code 86317 describes quantitative infectious-agent antibody testing not otherwise identified by a more specific assay code.
- 86309Mononucleosis titerQuantitative antibody level$6.47
- Code 86309 is for a heterophile antibody titer. Use 86317 for a different infectious-agent antibody assay when quantitative measurement is performed.
- 86308Mono testHeterophile antibody screen$5.18
- Code 86308 is for a heterophile antibody screen. Code 86317 is for quantitative measurement of antibodies to an infectious agent.
86317 billing questions
How does this code differ from 86318?
Code 86317 describes quantitative antibody measurement. Code 86318 is used for qualitative or semiquantitative infectious-agent antibody testing.
When should a more specific infectious-agent code be used?
Use a more specific code when it describes the assay performed. Document the agent tested and whether the result is quantitative.
What should the documentation identify?
Document the infectious agent and that the assay measures antibody quantity.
Does Medicare pay this test under the physician fee schedule?
No. Medicare pays this test through the CLFS only.
Does the CLFS amount vary by locality or setting?
No. One national amount applies across states and localities, with no office-versus-facility difference.
Where this amount comes from
FeeBase reads lab amounts directly from the CMS Clinical Laboratory Fee Schedule file for the quarter: one row per code, with its payment indicator and national amount. Contractor-priced tests are labeled, never given a made-up amount. Amounts are Medicare payment limits, not a patient’s bill or a commercial rate.
CMS CLFS 2026 Q4 · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file line behind this amount
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