Summary & Overview
CPT 45331: Flexible Sigmoidoscopy with Biopsy
CPT code 45331 is a widely utilized billing code in gastroenterology, representing the flexible sigmoidoscopy procedure with biopsy of single or multiple sites. This diagnostic service is essential for the detection and evaluation of colon abnormalities, such as polyps, neoplasms, and unexplained gastrointestinal symptoms. The procedure is typically performed in outpatient hospital settings and is a cornerstone in colorectal disease management.
Major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare, provide coverage for this service, reflecting its clinical importance and broad applicability. The publication offers a comprehensive overview of policy updates, reimbursement benchmarks, and clinical context relevant to CPT code 45331. Readers will gain insights into payer coverage, typical clinical indications, and related procedural codes, supporting informed decision-making in medical billing and compliance.
Key topics include the role of flexible sigmoidoscopy with biopsy in gastrointestinal diagnostics, common billing modifiers, associated provider taxonomies, and ICD-10 diagnoses frequently linked to this procedure. The article also highlights related CPT codes for similar endoscopic services, offering a clear framework for understanding procedural distinctions and billing practices. This summary serves as a resource for healthcare professionals, administrators, and policy analysts seeking up-to-date information on the utilization and coverage of CPT code 45331.
CPT Code Overview
CPT code 45331 represents a flexible sigmoidoscopy procedure with biopsy, either single or multiple. This procedure is performed by physicians specializing in gastroenterology and involves the examination of the lower part of the colon using a flexible scope, with tissue samples taken for further analysis. The typical site of service for this procedure is an outpatient hospital setting, designated as Place of Service 22. Flexible sigmoidoscopy with biopsy is a key diagnostic tool for identifying and evaluating various gastrointestinal conditions, including abnormal growths, bleeding, and other colon pathologies.
Clinical & Coding Specifications
Clinical Context
A patient presents to the outpatient hospital setting with symptoms such as rectal bleeding, abnormal stool findings, or a history of colon polyps. The provider, typically a gastroenterologist, family medicine physician, or internal medicine physician, determines that a flexible sigmoidoscopy with biopsy is clinically indicated. During the procedure, the provider uses a flexible sigmoidoscope to examine the lower colon and rectum, and obtains one or more tissue biopsies for histopathological evaluation. The workflow includes pre-procedure assessment, informed consent, the sigmoidoscopy with biopsy, and post-procedure care. The procedure is commonly performed for diagnostic evaluation of suspected polyps, neoplasms, or unexplained gastrointestinal symptoms.
Coding Specifications
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Modifiers:
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26: Used when reporting only the professional component (interpretation and report) of the procedure. - Modifier
TC: Used when reporting only the technical component (equipment, supplies, and technical staff) of the procedure. - Modifier
59: Indicates a distinct procedural service, used when multiple procedures are performed that are not normally reported together. - Modifier
51: Used to indicate multiple procedures performed during the same session.
- Modifier
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Provider Taxonomies: