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CPT 89240: Unlisted Pathology Procedure
CPT code 89240 identifies unlisted pathology procedures and is used when a pathology service lacks a specific CPT descriptor. This code is important nationally because it enables reporting and billing for atypical or novel pathology tests that cannot be matched to existing codes, ensuring clinical services are documented and can be processed by payers.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of how 89240 is used in clinical and billing workflows, typical sites of service where the code is reported, and guidance on what information is commonly needed to support claims for unlisted pathology procedures.
The publication covers benchmarking practices for unlisted pathology reporting, documentation expectations, and common administrative considerations when submitting 89240 claims to major national payers. It also outlines areas where policy updates or payer-specific requirements may affect claim acceptance. Data not available in the input will be noted where applicable.
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Billing Code Overview
CPT code 89240 is an unlisted pathology procedure code used to report pathology services that do not have a specific, existing CPT code. It serves as a catch-all for unique or uncommon pathology procedures that fall outside established coding descriptors.
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Service type: Pathology procedure (unlisted)
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Typical site of service: Hospital pathology laboratories, independent pathology labs, and outpatient surgical or procedural settings where specialized or atypical pathology testing is performed.
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