85576 Blood platelet aggregation
Also known as: Platelet aggregation, agg study
Blood platelet aggregation test measures the ability of platelets to clump together in response to aggregating agents, assessing platelet function and hemostatic competency.
In Plain Language
Blood clotting cell test; Platelet stickiness assessment
Clinical Context
Used to diagnose platelet function disorders, assess aspirin effectiveness, evaluate bleeding diathesis, and screen for von Willebrand disease or other coagulation abnormalities.
RVU Breakdown
| Work RVU | 0.37 |
| Total RVU | 0.37 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
Lab and pathology codes require an order from the treating provider with clinical indication. For molecular pathology and genetic testing, document the specific analytes tested and clinical rationale.
How This Code Compares
With a work RVU of 0.37, this code ranks in the 29th percentile among Pathology & Lab codes — 1.8x below the median (0.68). The highest wRVU in this category is 2.78.
Specialties
Frequently Asked Questions
What is CPT code 85576?
CPT 85576 (Blood platelet aggregation) is a Pathology & Lab code. Blood platelet aggregation test measures the ability of platelets to clump together in response to aggregating agents, assessing platelet function and hemostatic competency.
Who uses CPT code 85576?
CPT 85576 is used by Hematology, Hemostasis/Thrombosis, Clinical Pathology. Used to diagnose platelet function disorders, assess aspirin effectiveness, evaluate bleeding diathesis, and screen for von Willebrand disease or other coagulation abnormalities.
When is CPT 85576 used?
Used to diagnose platelet function disorders, assess aspirin effectiveness, evaluate bleeding diathesis, and screen for von Willebrand disease or other coagulation abnormalities.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.