88341 Imhchem/imcytchm each add antb
Also known as: immunochemistry additional antibody add-on, IHC each add-on antibody
Immunohistochemistry or immunocytochemistry for each additional antibody beyond the first antibody applied to tissue.
In Plain Language
additional immune marker test; extra antibody staining
Clinical Context
Add-on code when multiple antibodies are needed for diagnosis; each antibody requires separate processing and is counted separately.
RVU Breakdown
| Work RVU | 0.55 |
| Total RVU | 0.55 |
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 0.55, this code ranks in the 44th percentile among Pathology & Lab codes — 1.2x below the median (0.68). The highest wRVU in this category is 2.78.
Specialties
Frequently Asked Questions
What is CPT code 88341?
CPT 88341 (Imhchem/imcytchm each add antb) is a Pathology & Lab code. Immunohistochemistry or immunocytochemistry for each additional antibody beyond the first antibody applied to tissue.
Who uses CPT code 88341?
CPT 88341 is used by Pathology, Oncology. Add-on code when multiple antibodies are needed for diagnosis; each antibody requires separate processing and is counted separately.
When is CPT 88341 used?
Add-on code when multiple antibodies are needed for diagnosis; each antibody requires separate processing and is counted separately.
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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.