CPT code 82045: Albumin ischemia test, ischemia-modified protein2026 Medicare lab fee · Clinical Laboratory Fee Schedule
Measures albumin changes associated with restricted heart blood flow; reported for an ischemia-modified albumin laboratory assay.
Medicare pays $33.94 for 82045 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
$33.94
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 82045 covers
Code 82045 identifies an assay of albumin, a protein, in relation to restricted blood flow to the heart. It reports ischemia-modified albumin, distinct from routine serum albumin concentration testing (82040) and urine albumin measurement. Codes 82043 and 82044 identify quantitative and semiquantitative urine albumin testing, respectively. Select the code for the assay performed: 82045 represents ischemia-related albumin testing, not a general cardiac workup or a troponin assay.
Medicare pays 82045 only under the CLFS, at one national amount applied across states and localities, without an office-versus-facility adjustment. The 2026 national amount is $33.94, unchanged from 2020 through 2026. The physician fee schedule excludes this test; Medicare payment is 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 82045
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 82045. 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 82045 with status X (excluded by statute), so the test itself is paid only from the CLFS.
82045 on the lab fee schedule since 2020
82045 · CLFS 2026 Q4 (current)
$33.94
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.
82045 compared with similar tests
- 82040Albumin assayBlood specimen$4.95
- 82040 measures serum albumin concentration. Code 82045 identifies an assay of albumin in relation to restricted heart blood flow.
- 82043Urine albuminQuantitative measurement$5.78
- 82043 identifies quantitative urine albumin testing, not ischemia-modified albumin testing.
- 82044Urine albuminSemiquantitative$6.23
- 82044 identifies semiquantitative urine albumin testing, not ischemia-modified albumin testing.
- 84484TroponinQuantitative assay$12.47
- 84484 identifies a troponin assay, a different cardiac laboratory test from ischemia-modified albumin testing.
82045 billing questions
How does 82045 differ from 82040?
Code 82045 identifies ischemia-modified albumin testing. Code 82040 is for serum albumin measurement.
Is 82045 a urine albumin test?
No. Codes 82043 and 82044 identify quantitative and semiquantitative urine albumin testing; 82045 is an ischemia-related albumin assay.
Is 82045 reported instead of a troponin assay?
No. Code 84484 identifies a troponin assay, a different test; 82045 identifies ischemia-modified albumin testing.
How does Medicare pay for 82045?
Medicare pays it through the CLFS at one national amount across states and localities, without an office-versus-facility adjustment.
Is modifier 26 used for 82045?
Medicare pays 82045 only through the CLFS; the physician fee schedule excludes the test.
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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