88346 Imfluor first 1antb stain procedures
Also known as: immunofluorescence 1st antibody, IF microscopy, fluorescent antibody staining
Immunofluorescence microscopy for the first antibody applied to tissue specimen for antigen identification.
In Plain Language
fluorescent antibody examination; glowing antibody staining
Clinical Context
Used primarily in renal pathology and other tissues to visualize specific antigens using fluorescent-labeled antibodies under ultraviolet microscopy.
RVU Breakdown
| Work RVU | 0.72 |
| Total RVU | 0.72 |
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 0.72, this code ranks in the 59th percentile among Pathology & Lab codes — 1.1x the median (0.68). The highest wRVU in this category is 2.78.
Specialties
Frequently Asked Questions
What is CPT code 88346?
CPT 88346 (Imfluor first 1antb stain procedures) is a Pathology & Lab code. Immunofluorescence microscopy for the first antibody applied to tissue specimen for antigen identification.
Who uses CPT code 88346?
CPT 88346 is used by Pathology, Nephropathology. Used primarily in renal pathology and other tissues to visualize specific antigens using fluorescent-labeled antibodies under ultraviolet microscopy.
When is CPT 88346 used?
Used primarily in renal pathology and other tissues to visualize specific antigens using fluorescent-labeled antibodies under ultraviolet microscopy.
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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.