$119.12–$131.70
Choose 78191 for platelet survival and 78130 for red-cell survival; the tracked blood-cell type distinguishes the studies.
On this page
CMS RVU26D · Effective 2026-10-01
78191 Platelet study Medicare reimbursement rates in Illinois
Reports a study that measures platelet survival over time to investigate shortened platelet lifespan or suspected platelet destruction and sequestration. Compare 78191 office and facility rates across CMS payment localities in Illinois.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 78191 in Illinois?
Illinois has 4 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 4 payment areas shown below, using the same CMS release.
Office / nonfacility
$119.12–$131.70
4 of 4 localities have a supported rate.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Where 78191 pays more and less in Illinois
4 payment localities
$119.12 to $131.70
Nuclear medicine
About 78191: Platelet survival and sequestration study
Reports a study that measures platelet survival over time to investigate shortened platelet lifespan or suspected platelet destruction and sequestration.
This diagnostic study evaluates how long platelets remain in circulation and may help investigate thrombocytopenia when shortened survival or sequestration is suspected. It involves studying the patient’s platelets over time; nuclear medicine and laboratory personnel may perform the technical work, while a physician interprets the findings. The study is distinct from imaging the spleen alone and from tests that track red blood cells.
Report 78191 for the platelet-survival study as a whole, supported by the order, records of the study performed, and the physician’s interpretation. CMS recognizes a professional component for interpretation and a technical component for equipment and staff. Bill the professional work with modifier 26, the technical work with modifier TC, or the global service without either modifier when one entity provides both components. The documentation should identify the clinical question and support the component billed.
CMS billing rules for 78191
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
Where the value comes from
- Work RVU0.59 · 16%
- Practice expense (office) RVU3.14 · 83%
- Malpractice RVU0.07 · 2%
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
78191 compared with similar codes
Office rates for Illinois, from the same CMS release.
Compare 78191 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
4 of 4 payment localities
Chicago →
Office / nonfacility
$130.61
Facility
Unavailable
East St. Louis →
Office / nonfacility
$120.90
Facility
Unavailable
Rest Of Illinois →
Office / nonfacility
$119.12
Facility
Unavailable
Suburban Chicago →
Office / nonfacility
$131.70
Facility
Unavailable
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78191 billing questions
How is 78191 different from a red-cell survival study?
78191 evaluates platelet survival. Use 78130 when the study tracks red-cell survival instead.
When should modifier 26 or TC be reported?
Use modifier 26 for the physician’s interpretation and modifier TC for the technical component. Report the global service without either modifier when both components are billed together.
What documentation supports the professional component?
The record should include the clinical question and the physician’s interpretation of the platelet-survival findings.
Does the technical component include the interpretation?
No. CMS identifies equipment and staff as the technical component; physician interpretation is the professional component.
Is this the code for spleen imaging?
No. 78191 evaluates platelet survival. 78185 is the spleen-imaging code when the service performed is imaging the spleen.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
9,24578185,,Spleen imaging,A,,0.39,4.18,,4.18,NA,0.05,4.62,4.62,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,12.18,12.18,0.13
9,24678185,26,Spleen imaging,A,,0.39,0.07,,0.07,,0.01,0.47,0.47,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,24778185,TC,Spleen imaging,A,,0.00,4.11,,4.11,NA,0.04,4.15,4.15,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,12.11,12.11,0.12
9,24878191,,Platelet survival study,A,,0.59,3.14,,3.14,NA,0.07,3.80,3.80,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,24978191,26,Platelet survival study,A,,0.59,0.11,,0.11,,0.01,0.71,0.71,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
9,25078191,TC,Platelet survival study,A,,0.00,3.03,,3.03,NA,0.06,3.09,3.09,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
9,25178195,,Lymph system imaging,A,,1.17,8.05,,8.05,NA,0.11,9.33,9.33,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,16.87,16.87,0.17