85475 Hemolysin acid
Also known as: acid hemolysis test, acid hemolysin
Measurement of acid hemolysin, a test measuring lysis of red blood cells in acidified serum to assess for paroxysmal nocturnal hemoglobinuria and complement-mediated hemolysis.
In Plain Language
acid hemolysis test; red cell breakdown test
Clinical Context
Screens for paroxysmal nocturnal hemoglobinuria (acidified serum lysis of RBCs); largely replaced by flow cytometry for CD55/CD59 antigen detection.
RVU Information
CPT 85475 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
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
This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the Pathology & Lab category, 94% of codes share this characteristic.
Specialties
Frequently Asked Questions
What is CPT code 85475?
CPT 85475 (Hemolysin acid) is a Pathology & Lab code. Measurement of acid hemolysin, a test measuring lysis of red blood cells in acidified serum to assess for paroxysmal nocturnal hemoglobinuria and complement-mediated hemolysis.
Who uses CPT code 85475?
CPT 85475 is used by Clinical Pathology, Hematology, Internal Medicine. Screens for paroxysmal nocturnal hemoglobinuria (acidified serum lysis of RBCs); largely replaced by flow cytometry for CD55/CD59 antigen detection.
When is CPT 85475 used?
Screens for paroxysmal nocturnal hemoglobinuria (acidified serum lysis of RBCs); largely replaced by flow cytometry for CD55/CD59 antigen detection.
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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.