CPT code 86606: Aspergillus antibody2026 Medicare lab fee · Clinical Laboratory Fee Schedule
Measures antibodies to Aspergillus, supporting evaluation of suspected Aspergillus-related disease when serologic testing is performed.
Medicare pays $15.05 for 86606 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
$15.05
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 7 sections
What 86606 covers
This serologic test analyzes a patient specimen for antibodies to Aspergillus fungi. Clinicians may order it when evaluating suspected Aspergillus-related disease, including allergic bronchopulmonary aspergillosis or chronic pulmonary aspergillosis. Clinical laboratories, including hospital and reference laboratories, perform and report the analysis; clinicians interpret results with clinical findings and other diagnostic information.
Report 86606 for Aspergillus antibody analysis; it identifies antibody testing rather than an Aspergillus culture or antigen test. Medicare pays the service only through the CLFS. The code has one national amount across states and localities, with no geographic adjustment or office/facility payment difference. The 2026 national CLFS amount is $15.05, unchanged since 2020; there is no separate physician-fee-schedule payment.
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 86606
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 86606. 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 86606 with status X (excluded by statute), so the test itself is paid only from the CLFS.
86606 on the lab fee schedule since 2020
86606 · CLFS 2026 Q4 (current)
$15.05
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.
86606 compared with similar tests
- 86612Blastomyces antibody$12.90
- Use 86612 for antibody testing directed at Blastomyces. Use 86606 when the target is Aspergillus.
- 86635Coccidioides antibodySerologic test$11.47
- Use 86635 for Coccidioides antibody analysis; 86606 is specific to Aspergillus antibodies.
- 86628Candida antibodyAntibody to Candida$12.01
- Use 86628 for Candida antibody analysis. The organism being tested determines whether 86628 or 86606 applies.
86606 billing questions
When should 86606 be selected instead of another fungal antibody code?
Use 86606 when the analysis is for antibodies to Aspergillus. Select a different organism-specific code when the antibody test targets another fungus, such as Blastomyces or Coccidioides.
Does 86606 report an Aspergillus culture or antigen test?
No. It reports an antibody analysis; a culture or antigen analysis is a different service.
Can modifier 26 be used for the interpretation?
No separate physician-fee-schedule payment is available for 86606; Medicare pays the code through the CLFS.
How does Medicare price 86606?
Medicare pays one national CLFS amount across states and localities, without an office or facility payment 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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