Summary & Overview
CPT 45315: Proctosigmoidoscopic Removal of Multiple Lesions
CPT code 45315 represents proctosigmoidoscopic removal of multiple tumors, polyps, or lesions using a rigid proctosigmoidoscope with techniques such as hot biopsy forceps, bipolar cautery, or snare. This procedure is clinically important for diagnosis and treatment of distal colorectal pathology and can prevent progression of neoplastic lesions. Nationally, the code is relevant for outpatient endoscopy workflow, quality measurement for lesion removal, and payer coverage determinations for colorectal care.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical intent and typical sites of service, a summary of common modifiers associated with procedural billing practice, and contextual guidance on how the code is classified within outpatient endoscopy service lines. The publication covers benchmarks and utilization context, coding and billing considerations, and how payers commonly approach coverage and authorization for endoscopic polypectomy procedures.
This summary provides a national perspective useful to coding specialists, clinical billing teams, and policy analysts seeking clarity on procedural scope, service settings, and payer applicability for CPT code 45315.
Billing Code Overview
CPT code 45315 describes a diagnostic and therapeutic procedure in which a provider uses a proctosigmoidoscope — a short rigid scope with a camera — to inspect the distal colon and rectum and remove multiple tumors, polyps, or other lesions. The procedure employs techniques such as hot biopsy forceps, bipolar cautery, or a snare to achieve lesion removal.
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Service type: Endoscopic polypectomy/removal via proctosigmoidoscopy
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Typical site of service: Ambulatory surgery center, hospital outpatient department, or office-based endoscopy suite
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient presents to a colorectal clinic with intermittent rectal bleeding, change in bowel habits, and a history of previously identified colorectal polyps. After pre-procedure assessment and informed consent, the patient undergoes a rigid proctosigmoidoscopy with examination of the anus, rectum, and distal sigmoid colon using a proctosigmoid scope. During the procedure the endoscopist identifies multiple polyps and small sessile lesions. The operator performs polypectomy using a combination of techniques including hot biopsy forceps for small lesions, bipolar cautery for hemostasis, and snare polypectomy for larger polyps. Resected tissue is submitted for pathology. Typical workflow elements include pre-procedure evaluation and anticoagulation management, brief procedural sedation or local anesthesia per site protocols, sterile setup in an ambulatory endoscopy suite or outpatient surgery center, procedural documentation of lesion size/location and removal technique, specimen labeling, and post-procedure recovery and discharge instructions.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When reporting only the physician’s interpretation or professional portion of a diagnostic service if applicable to imaging or pathology components associated with the procedure. |
51 |