CPT 45308 Proctosigmoidoscopy Reimbursement | OpenPayer

Summary & Overview

CPT 45308: Proctosigmoidoscopic Removal of Single Lesion

CPT code 45308 denotes a proctosigmoidoscopic procedure in which a provider inspects the anus, rectum, and sigmoid colon with a proctosigmoid scope and removes a single tumor, polyp, or lesion using hot biopsy forceps or bipolar cautery. Nationally, this code reflects a common minor endoscopic surgical intervention that combines diagnostic visualization with definitive lesion removal in the distal colon and rectum.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and the common operational considerations that influence coding and billing for endoscopic lesion removal. The publication outlines benchmark-oriented elements such as utilization patterns, relative place-of-service expectations, and coding comparators where available. It also flags areas for policy attention, including payer-specific coverage variances and documentation expectations that commonly affect claim adjudication.

The piece is intended for revenue cycle leaders, coding professionals, and clinical managers seeking a national-level primer on the clinical purpose and billing context of CPT code 45308, along with an overview of what to examine when validating claims or evaluating practice workflows.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare45308CPTproctosigmoidoscopyendoscopypolypectomycolorectaloutpatient-surgeryprocedure-codinggastroenterology

Billing Code Overview

CPT code 45308 describes an endoscopic procedure in which a provider examines the anus, rectum, and sigmoid colon using a proctosigmoid scope and removes a single tumor, polyp, or other lesion with hot biopsy forceps or bipolar cautery. This procedure is a diagnostic and therapeutic proctosigmoidoscopic lesion removal.

Service Type: Endoscopic surgical removal (proctosigmoidoscopy with lesion excision)

Typical Site of Service: Ambulatory surgery center or hospital outpatient department; procedure may also be performed in a specialty clinic equipped for endoscopy

Clinical & Coding Specifications

Clinical Context

A 58-year-old patient presents to an outpatient endoscopy suite with several weeks of intermittent rectal bleeding and a palpable rectal mass on digital rectal exam. After bowel prep as directed and informed consent, the patient undergoes a proctosigmoidoscopy in an outpatient surgical/procedural room. Using a rigid proctosigmoid scope, the provider inspects the anal canal, rectum, and distal sigmoid colon. A single 8–12 mm sessile polyp is visualized approximately 10 cm from the anal verge. The provider applies hot biopsy forceps/bipolar cautery and removes the lesion, achieving hemostasis. Specimen is sent to pathology; brief recovery and discharge instructions provided.

Common clinical workflow steps:

Pre-procedure evaluation and informed consent in the clinic or pre-op area
Bowel preparation and appropriate sedation or local anesthesia in the procedure room
Performance of rigid proctosigmoidoscopy with lesion identification
Excisional removal of a single lesion using hot biopsy forceps or bipolar cautery (CPT 45308)
Specimen labeling and submission to pathology
Immediate assessment for bleeding and application of hemostatic measures as needed
Recovery in PACU/ambulatory recovery area and discharge with follow-up instructions

Coding Specifications

CPT 45380: Flexible Colonoscopy with Biopsy

45381-COLONOSCOPY-FLEXIBLE-WITH-DIRECTED-SUBMUCOSAL-INJECTIONS

CPT 45381: Colonoscopy with Directed Submucosal Injection

CPT-45335-FLEXIBLE-ENDOSCOPE-SUBMUCOSAL-INJECTION-SIGMOID-RECTUM

CPT 45335: Flexible Endoscope with Submucosal Injection, Rectum/Sigmoid

45384-COLONOSCOPY-FLEXIBLE-PROXIMAL-TO-SPLENIC-FLEXURE-WITH

CPT 45384: Colonoscopy with Removal of Lesion by Hot Biopsy or Cautery

CPT-45333-FLEXIBLE-SIGMOIDOSCOPY-LESION-REMOVAL-HOT-BIOPSY

CPT 45333: Flexible Sigmoidoscopy with Lesion Removal (Hot Biopsy)

CPT-45307-PROCTOSIGMOIDOSCOPY-LOWER-GI-ENDOSCOPY

CPT 45307: Lower GI Proctosigmoidoscopy

CPT-45300-PROCTOSIGMOIDOSCOPY-RIGID-DIAGNOSTIC

CPT 45300: Diagnostic Proctosigmoidoscopy, Rigid

CPT-45340-FLEXIBLE-SIGMOIDOSCOPY-BALLOON-DILATION-STRICTURE

CPT 45340: Flexible Sigmoidoscopy with Balloon Dilation of Colonic Stricture

CPT-45317-PROCTOSIGMOIDOSCOPY-WITH-HEMOSTASIS

CPT 45317: Proctosigmoidoscopy with Hemostasis

CPT-45309-PROCTOSIGMOIDOSCOPY-SNARE-EXCISION-LESION

CPT 45309: Proctosigmoidoscopy with Snare Excision of Lesion

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Taxonomy Code	Specialty	Notes
207RP0000X	Colon and Rectal Surgery	Primary specialty performing anorectal excisions and polypectomy in some centers.
208000000X	General Surgery	Frequently performs proctologic procedures in outpatient surgical settings.
207L00000X	Gastroenterology	Commonly performs lower endoscopic procedures and polypectomy in endoscopy suites.
363L00000X	Family Medicine	May perform in-office anorectal procedures using rigid scopes in some practices.
207LP2900X	Surgery of the Colon & Rectum (Physician with proctology focus)	Applicable where focused expertise is required.

ICD-10 Code	Description	Clinical Relevance
Data not available in the input.	Data not available in the input.	Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`45300`	Proctosigmoidoscopy; diagnostic, rigid	Often performed immediately before `45308` for diagnostic inspection of the distal colon prior to lesion removal.
`45305`	Proctosigmoidoscopy; with biopsy, single or multiple	Alternative when cold biopsy forceps are used instead of hot biopsy or cautery; may be performed if only biopsy indicated.
`45309`	Colonoscopy, flexible, proximal to splenic flexure; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps	Higher-level endoscopic polypectomy for more proximal lesions; not billed with `45308` but related when an extended flexible scope procedure is required.
`45331`	Sigmoidoscopy, flexible; diagnostic, with biopsy	Performed when flexible approach is chosen instead of rigid proctosigmoidoscopy; may precede or replace `45308` depending on findings.
`88305`	Pathology examination, surgical specimen, intermediate complexity	Typically billed by pathology for histologic evaluation of the excised lesion obtained during `45308`.

`11`	Office/Outpatient E/M only (separate active problem)	Use when a significant, separately identifiable E/M is reported on the same date for unrelated evaluation and management prior to the procedure.
`22`	Increased Procedural Services	Use when the service required substantially greater work than usual (document rationale).
`23`	Unusual Anesthesia	Use when procedure performed under general anesthesia or regional blocks due to unusual circumstances but without modifier `47`.
`26`	Professional Component	Use when only the professional component of the service is billed separately from technical component.
`50`	Bilateral Procedure	Generally not applicable but used if procedure performed bilaterally when applicable to site-specific claims.
`51`	Multiple Procedures	Use when multiple distinct procedures are billed the same day; reduces payment for secondary procedures per payer rules.
`52`	Reduced Services	Use when the procedure was partially reduced or not completed as planned.
`53`	Discontinued Procedure	Use when the procedure was started but terminated due to extenuating circumstances.
`62`	Two Surgeons	Use when two surgeons work together as primary surgeons performing distinct parts of the procedure.
`78`	Unplanned Return to OR by Same Physician Following Initial Procedure	Use when patient returns to the operating/procedure room for related procedural service during the global period.
`80`	Assistant Surgeon	Use when an assistant surgeon participates and billing for assistant is appropriate.
`81`	Minimum Assistant Surgeon	Use when minimal assistance was provided.
`26`	Professional Component	Use when differentiating professional vs technical component if required by payer.
`TC`	Technical Component	Use when billing the technical component only (equipment, supplies, non-physician staff).

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