CPT code 82370: Stone analysis, X-ray diffraction2026 Medicare lab fee · Clinical Laboratory Fee Schedule
X-ray diffraction analysis identifies the composition of a submitted urinary stone, supporting evaluation of stone disease and recurrence risk.
Medicare pays $12.52 for 82370 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
$12.52
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 82370 covers
This laboratory test uses X-ray diffraction to analyze a calculus and identify its composition. The specimen is a stone submitted for analysis, such as one passed by the patient or removed during a procedure. Clinicians may order the test after a urinary stone event to inform evaluation and prevention planning. The laboratory reports the analysis; the code identifies the X-ray diffraction method rather than a general stone analysis or another analytical technique.
Report 82370 for calculus analysis performed by X-ray diffraction. The 2026 national CLFS amount is $12.52, unchanged since 2020. Medicare pays one national amount per code across all states and localities, with no geographic adjustment or office-versus-facility difference. The test is paid only under the CLFS and is excluded from the physician fee schedule by statute.
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 82370
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 82370. 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 82370 with status X (excluded by statute), so the test itself is paid only from the CLFS.
82370 on the lab fee schedule since 2020
82370 · CLFS 2026 Q4 (current)
$12.52
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.
82370 compared with similar tests
- 82355Stone analysisQualitative analysis$11.58
- 82355 is for qualitative calculus analysis. Choose 82370 when the laboratory analyzes the calculus by X-ray diffraction.
- 82360Stone analysisQuantitative chemical analysis$12.87
- 82360 describes quantitative calculus analysis. 82370 identifies X-ray diffraction as the method used to analyze the calculus.
- 82365Stone analysisInfrared method$12.90
- 82365 is for calculus spectroscopy. Report 82370 when the analysis is performed using X-ray diffraction.
82370 billing questions
When should 82370 be reported instead of another calculus analysis code?
Use 82370 when the calculus is analyzed by X-ray diffraction. Codes 82355, 82360, and 82365 describe other calculus analysis approaches.
How does 82370 differ from calculus spectroscopy?
82370 identifies X-ray diffraction as the analytical method. Report 82365 when the analysis is performed by spectroscopy.
What specimen supports reporting 82370?
The test analyzes a submitted calculus, such as a urinary stone passed by the patient or removed during a procedure. Documentation should identify the calculus and support use of X-ray diffraction.
Does Medicare pay 82370 under the physician fee schedule?
No. Medicare pays this test only through the CLFS, at one national amount per code across localities and settings.
What does the test report?
The laboratory reports an X-ray analysis of the calculus that identifies its composition.
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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