Virtual Colonoscopy (CT Colonography)
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Policy governing coverage and prior authorization requirements for CT colonography (virtual colonoscopy) for diagnostic and screening indications, affecting providers requesting imaging for eocco members.
No material clinical or coverage changes in this revision.
Coverage Criteria for CT Colonography (Virtual Colonoscopy)
Diagnostic indications
Covered when criteria below are met
Diagnostic indications (A)
- Conventional colonoscopy cannot be performed due to a known colonic lesion, obstructive tumor, spasm, or other structural abnormality.
- Patient is receiving chronic anticoagulation that cannot be interrupted.
- Patient has a contraindication to conventional colonoscopy.
- Patient has diverticulitis with increased risk of perforation.
- Patient has an increased risk with sedation (e.g., COPD or previous adverse reaction to anesthesia).
- Patient with complications from prior conventional colonoscopy.
Screening indication
Covered when ALL of the following are met
Diagnostic planning and colorectal cancer screening
Experimental / Investigational
Use of virtual colonoscopy (CT colonography) for the management of inflammatory bowel disease is considered experimental and investigational because its value for this indication has not been established.
Virtual colonoscopy for inflammatory bowel disease is designated not medically necessary / experimental per Section II.C of this policy and is excluded from coverage for that indication.
Applicable Codes and Screening Frequency
| 74261 | Computed tomographic (CT) colonography, diagnostic, including image postprocessing; without contrast material. |
| 74262 | Computed tomographic (CT) colonography, diagnostic, including image post processing; with contrast material(s) including non-contrast images, if performed. |
| 74263 | Computed tomographic (CT) colonography, screening, including image postprocessing |
Contrast-specific CPT coding for CT colonography
CT colonography may be performed with or without contrast; select the CPT code that matches whether contrast is used or whether the exam is for screening. Use 74261 for diagnostic CT colonography without contrast, 74262 for diagnostic CT colonography with contrast, and 74263 for screening CT colonography.
- 74261 — Computed tomographic (CT) colonography, diagnostic, including image postprocessing; without contrast material.
- 74262 — Computed tomographic (CT) colonography, diagnostic, including image post processing; with contrast material(s) including non-contrast images, if performed.
- 74263 — Computed tomographic (CT) colonography, screening, including image postprocessing
Prior Authorization and Documentation Requirements
Submit provider chart notes with prior auth
Provider chart notes with documentation of the indication for virtual colonoscopy must be submitted with the prior authorization request.
Denial risk if chart notes not provided
Failure to submit provider chart notes documenting the indication may result in denial of the prior authorization request.
Document the specific clinical indication on chart notes
Include clear documentation of the clinical reason for CT colonography (diagnostic or screening) in the submitted provider chart notes to support medical necessity.
- For diagnostic requests, document one or more listed indications (e.g., inability to perform conventional colonoscopy, chronic anticoagulation, contraindication to conventional colonoscopy, diverticulitis with perforation risk, high sedation risk, or prior colonoscopy complications).
- For screening requests, document age ≥45 and screening interval as appropriate.
Attach chart notes to prior authorization
Prior authorization for CT colonography requires submission of provider chart notes documenting the indication; ensure notes are attached to the request.
Definitions
Background
Computed tomographic (CT) colonography, also called virtual colonoscopy, is a non‑invasive imaging technique that acquires multiple CT images and reconstructs a three‑dimensional view of the colon to evaluate for lesions and polyps. It requires full bowel preparation and colonic insufflation for adequate evaluation; it does not require sedation and cannot perform polypectomy or obtain biopsies, which require conventional colonoscopy.
Screening Interval and Limits
Prior Authorization Summary
Attach chart notes to prior authorization
Prior authorization for CT colonography requires submission of provider chart notes documenting the indication; ensure notes are attached to the request.
Contrast Use and Coding
Not Covered / Experimental
Virtual colonoscopy for management of inflammatory bowel disease is not covered because it is considered experimental and investigational for this indication; the policy states its value for managing inflammatory bowel disease has not been established (Section II.C).
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