CPT code 86336: Inhibin A2026 Medicare lab fee · Clinical Laboratory Fee Schedule
Measures inhibin A, a reproductive hormone used in maternal serum screening and assessment of certain ovarian tumors.
Medicare pays $15.59 for 86336 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
$15.59
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 86336 covers
Inhibin A is a reproductive hormone produced by the gonads and placenta. A laboratory measures it in a patient specimen, most often serum. Obstetric practices use the result as one marker in maternal serum screening, including screening for fetal aneuploidy. Gynecologic oncology may use inhibin A to assess or follow inhibin-producing ovarian tumors. The ordering clinician interprets the result with the clinical context and other test findings.
Report 86336 for the inhibin A analyte. In maternal serum screening, it is distinct from alpha-fetoprotein, estriol, and human chorionic gonadotropin assays, which may be reported separately when performed. Medicare pays this test only through the CLFS. The 2026 national CLFS amount is $15.59, unchanged from 2020 through 2025, and is the same across states, localities, and office or facility settings. The code has no 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 86336
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 86336. 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 86336 with status X (excluded by statute), so the test itself is paid only from the CLFS.
86336 on the lab fee schedule since 2020
86336 · CLFS 2026 Q4 (current)
$15.59
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.
86336 compared with similar tests
- 82105AFP testSerum$16.77
- 82105 measures alpha-fetoprotein; 86336 measures inhibin A. Both may be included among maternal serum screening markers.
- 82677EstriolEstriol hormone level$24.18
- 82677 measures estriol, not inhibin A. Select each code for the corresponding assay performed.
- 84702hCG testQuantitative level$15.05
- 84702 measures human chorionic gonadotropin. It is a different analyte from inhibin A, even when both are used in screening.
86336 billing questions
What specimen is typically tested?
Inhibin A is typically measured in serum. The code identifies the analyte, not a specific collection method.
How does 86336 fit into maternal serum screening?
It represents the inhibin A marker, distinct from the AFP, estriol, and hCG assays that may also be performed for screening.
Is 86336 a panel code?
No. It identifies measurement of inhibin A; other analytes in a screening workup are separate tests.
Does Medicare pay a separate physician interpretation for 86336?
Medicare pays this test only through the CLFS. The code has no physician fee schedule payment.
Does the CLFS amount vary by location or setting?
No. Medicare uses one national amount for this code across states, localities, and office or facility settings.
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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