CurrentBlue KCPolicy POL-PP-216

Gastrointestinal Endoscopies and Related Services

Defines coding, billing and payment rules for gastrointestinal endoscopy procedures (colonoscopy, EGD, ERCP, sigmoidoscopy) for Blue KC providers, including screening vs diagnostic distinctions and bundling rules; affects professional and facility providers across Blue KC commercial and Medicare Advantage lines.

Policy Summary

PayerBlue KC

PolicyGastrointestinal Endoscopies and Related Services

Policy CodePolicy POL-PP-216

Change TypeContent additions and code clarifications

Effective Date08/09/2022

Next Review Date08/09/2026

Key ActionConfirm coverage and final payment are determined by date of service, member eligibility, benefit limits, Provider Service Agreement, and coding rules; contact Blue KC Provider Hotlines for coverage confirmation.

SourceLink

POLICY UPDATE CHANGES

Information added on colonoscopy anesthesia codes 00811 and 00812 and payment for recontracted/newly contracted providers performing multiple endoscopies within the same family.

Codes were corrected to clarify that a diagnostic or screening endoscopy is included as part of a surgical endoscopic procedure and should not be separately reported (example: 45378 included in 45379-45398).

Initial version created on 08/09/2022.

Version 6policy version

2026-08-09next scheduled review

Commercial & Medicare Advantagelines of business impacted

43235-43273, 45378-45398, 44385-44386code ranges referenced

Endoscopy Coverage and Billing Rules

Endoscopy coverage rules — key coverage and billing rules for gastrointestinal endoscopies (screening vs diagnostic, bundling, payment conditions).

ALL of the following

Screening colonoscopy is a test provided to an asymptomatic patient for the purpose of testing for colorectal cancer or colorectal polyps; the presence of a polyp or cancer does not change the screening intent.
Screening colonoscopies can be performed on patients aged 45 to 75.
When the primary purpose of the service is delivery of a USPSTF A or B preventive service, identify the service by adding modifier 33 to the procedure when appropriate; do not add modifier 33 for services already specifically identified as preventive and separately reported.
Use modifier 33 per preventive service rules.
A diagnostic endoscopy is performed for evaluation of signs, symptoms, or abnormal findings (e.g., abdominal pain, bleeding, diarrhea) and is reported as diagnostic/therapeutic rather than screening.

Policy Summary

PayerBlue KC

PolicyGastrointestinal Endoscopies and Related Services

Policy CodePolicy POL-PP-216

Change TypeContent additions and code clarifications

Effective Date08/09/2022

Next Review Date08/09/2026

SourceLink

On This Page

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

CPT / Anesthesia Codes and Screening Age

Endoscopy-related CPT/anesthesia codesCPTCovered

43260-43273	Endoscopic Procedures: ERCP
43235-43210	Endoscopic Procedures: Esophagogastroduodenoscopy (EGD) (note: ordering in document appears reversed)
45378-45398	Flexible and Rigid Colonoscopy Procedures
45330-45350	Flexible Sigmoidoscopy Procedures
44385-44386	Endoscopy of Small Intestinal Pouch
00811	Anesthesia for diagnostic or therapeutic colonoscopy (diagnostic)
00812	Anesthesia for screening colonoscopy

Screening colonoscopy age range

Screening age rangeAges 45 to 75

Screening definition linkScreening colonoscopy performed on asymptomatic persons to detect colorectal cancer or polyps; finding a polyp or cancer does not change screening intent.

Modifier guidanceScreening or preventive colonoscopies should be identified with modifier 33 when the primary purpose is preventive.

Billing, Documentation, and Payment Confirmation

Documentation Required

Coverage and Payment Confirmation

Coverage of any service is determined by date of service, a member's eligibility and benefit limits for the service or services rendered, all terms of the Provider Service Agreement, and applicable coding rules and guidelines. Final payment is subject to claims adjudication and industry-standard edits. Before rendering services or submitting claims, providers should confirm member eligibility, plan benefits, and any applicable prior authorization requirements. For questions about coverage determinations or whether a service is considered medically necessary, not medically necessary, or investigational, contact the appropriate Blue KC provider hotline below.

Verify date of service and member eligibility and benefit limits prior to service delivery
Confirm whether prior authorization is required and obtain it when applicable
Document medical necessity in the medical record to support claim adjudication
Be aware that final payment is subject to adjudication edits and coding rules
If discrepancy exists between policy and member coverage documents, the member's coverage document governs

Definitions and Modifiers

Screening colonoscopy — definition and identification guidance

DefinitionScreening colonoscopy: a test provided to a patient in the absence of signs or symptoms, performed on an asymptomatic person to test for colorectal cancer or polyps; whether a polyp or cancer is found does not change screening intent.

IdentificationScreening colonoscopies should be identified with modifier 33 when the primary purpose is delivery of an evidence-based preventive service per USPSTF A or B or other preventive mandates.

Bundling noteA diagnostic or screening endoscopy is included as part of a surgical endoscopic procedure and should not be separately reported (e.g., 45378 is included in codes 45379–45398).

Diagnostic colonoscopy — definition and anesthesia coding

DefinitionDiagnostic colonoscopy: test performed as a result of an abnormal finding, sign, or symptom (e.g., abdominal pain, bleeding, diarrhea).

Anesthesia coding — diagnosticReport anesthesia for a diagnostic or therapeutic colonoscopy with CPT code 00811.

Contrast with screening anesthesiaAnesthesia for a screening colonoscopy is billed with CPT code 00812.

Modifier 33 — identification of preventive-intent services

Purpose of modifier 33Use modifier 33 to identify services delivered for preventive intent in accordance with USPSTF A or B recommendations and other preventive mandates.

When not to useFor separately reported services specifically identified as preventive, modifier 33 should not be used.

Screening identificationScreening or preventive colonoscopies should be identified with modifier 33 when the primary purpose is preventive; finding disease does not change intent.