CPT code 85362: FDP test, semiquantitative slide method2026 Medicare lab fee · Clinical Laboratory Fee Schedule
A semiquantitative slide agglutination test for fibrin degradation products, reported when clinicians assess increased fibrinolysis or suspected coagulation disorders.
Medicare pays $6.89 for 85362 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
$6.89
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 85362 covers
This laboratory assay uses slide-based agglutination to detect fibrin and fibrinogen breakdown products and yields a semiquantitative result. Clinicians may request it when evaluating increased fibrinolysis, including suspected disseminated intravascular coagulation. It differs from quantitative FDP testing and D-dimer testing: code selection follows the assay performed and the analyte or result type. Clinical laboratories report the result to the clinician managing the coagulation evaluation.
Report 85362 for this semiquantitative slide-based method, rather than for a quantitative FDP assay or a D-dimer assay. Medicare pays 85362 under the CLFS at one national amount in every state and locality, with no office-versus-facility payment difference. The 2026 national CLFS amount is $6.89, unchanged from 2020 through 2025. Medicare pays the test only through the CLFS.
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 85362
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 85362. 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 85362 with status X (excluded by statute), so the test itself is paid only from the CLFS.
85362 on the lab fee schedule since 2020
85362 · CLFS 2026 Q4 (current)
$6.89
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.
85362 compared with similar tests
- 85378D-dimer testQualitative or semiquantitative$9.72
- Both concern semiquantitative fibrin degradation testing. Select 85362 for slide agglutination; 85378 is another semiquantitative assay.
- 85379D-dimerQuantitative assay$10.18
- 85379 is for quantitative fibrin degradation products. 85362 reports a semiquantitative slide agglutination result.
- 85380D-dimerQualitative or semiquantitative$10.18
- 85380 tests for D-dimer specifically. 85362 tests for fibrin and fibrinogen degradation products using slide agglutination.
- 85384Fibrinogen testFunctional activity$9.72
- 85384 measures fibrinogen activity, not degradation products. Choose based on the analyte tested.
85362 billing questions
When should 85362 be selected instead of 85379?
Use 85362 for the semiquantitative slide agglutination FDP assay. Use 85379 for quantitative fibrin degradation products testing.
Is 85362 a D-dimer test?
No. It measures fibrin and fibrinogen degradation products by a semiquantitative slide method; 85380 is the D-dimer test.
Does 85362 include a separate physician interpretation?
Medicare pays the test through the CLFS only; the physician fee schedule does not provide a separate payment for this code.
How does Medicare pay for 85362?
Medicare pays one national CLFS amount per code across states and localities, with no office-versus-facility payment difference.
Should 85362 be reported for fibrinogen activity?
No. 85362 is for fibrin degradation products; 85384 is for fibrinogen activity.
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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