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ALL MEDICAL CODES IN CATEGORY Surgical Pathology Procedures; In Situ Hybridization

2025 CPT code 88365

In situ hybridization (e.g., FISH), per specimen; initial single probe stain procedure.

2025 CPT code 88364

In situ hybridization (e.g., FISH), per specimen; each additional single probe stain.This is an add-on code used in conjunction with 88365.