CPT code 82340: Urine calcium, timed quantitative measurement2026 Medicare lab fee · Clinical Laboratory Fee Schedule
Measures calcium quantitatively in a timed urine collection, commonly to assess urinary calcium excretion during evaluation of kidney stones or calcium disorders.
Medicare pays $6.03 for 82340 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
$6.03
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 82340 covers
This test quantifies calcium excreted in a timed urine collection. Clinicians commonly order it when evaluating recurrent kidney stones or assessing calcium balance, including suspected hypercalciuria. A clinical laboratory performs the assay on the collected urine; the ordering clinician interprets the result alongside the collection history and other clinical findings.
Report 82340 for the quantitative urine calcium assay, rather than a blood calcium measurement or analysis of a calculus. The code represents the assay, not a separate service for each individual void in the timed collection. Medicare pays it only through the CLFS: the 2026 national amount is $6.03, the same amount in every locality and in office and facility settings. The national amount has remained unchanged from 2020 through 2026. There is no separate physician-fee-schedule payment for this laboratory test.
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 82340
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 82340. 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 82340 with status X (excluded by statute), so the test itself is paid only from the CLFS.
82340 on the lab fee schedule since 2020
82340 · CLFS 2026 Q4 (current)
$6.03
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.
82340 compared with similar tests
- 82310Total calciumTotal, serum or plasma$5.16
- 82310 measures calcium in blood. Choose 82340 when the measured material is timed urine.
- 82330Calcium testIonized calcium$13.68
- 82330 measures ionized calcium in blood; 82340 quantifies calcium excreted in urine.
- 82360Stone analysisQuantitative chemical analysis$12.87
- 82360 quantitatively analyzes calculus material. It does not measure calcium excreted in a timed urine collection.
82340 billing questions
When should 82340 be selected instead of 82310?
Use 82340 for quantitative calcium measured in timed urine. Code 82310 is for a blood calcium assay.
How does 82340 differ from 82330?
82340 measures calcium in urine. 82330 measures ionized calcium in a blood specimen.
Does the code represent each urine specimen or void?
The test is for calcium measured in a timed urine collection; it does not represent a separate assay for every void collected.
Is a physician interpretation billed separately?
The test is paid through the CLFS, and this code has no separate physician-fee-schedule payment.
How does Medicare set payment for 82340?
Medicare uses one national CLFS amount for the code across localities and office and 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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