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    v1.0.28
    OpenPayerBilling CodesAnesthesia for Procedures on the Lower AbdomenCPT cpt-00811-anesthesia-lower-intestinal-endoscopy
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    CPT 00811: Anesthesia for Lower Intestinal Endoscopic Procedure Pre-Duodenal

    CPT code 00811 describes anesthesia services provided for a patient undergoing an unspecified lower intestinal endoscopic procedure in which the surgeon or proceduralist advances an endoscope into the intestines up to, but not into, the duodenum; service type: anesthesia for lower intestinal endoscopy; typical site of service: gastrointestinal endoscopy suite or ambulatory surgery center (hospital outpatient setting when performed in that environment).

    For related coverage guidance, see recent payer policy updates: Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use Disorders, Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use Disorders, Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use Disorders.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 58-year-old with chronic iron-deficiency anemia and intermittent lower abdominal pain referred for an outpatient diagnostic colonoscopic evaluation. The gastroenterology team schedules a lower intestinal endoscopic procedure up to but not into the duodenum to visualize the colon and terminal ileum. The anesthesia provider meets the patient in pre-op, reviews history, airway, and comorbidities (e.g., coronary artery disease, obstructive sleep apnea), obtains informed consent for monitored anesthesia care or general anesthesia as appropriate, and documents baseline vitals and ASA status.

    On procedure day the patient arrives to an ambulatory surgery center or hospital endoscopy suite. Standard monitors are applied (pulse oximetry, noninvasive blood pressure, ECG, capnography if sedated), intravenous access is confirmed, and sedation is administered per the anesthesia plan. The gastroenterologist advances the endoscope through the rectum, colon, and may intubate the terminal ileum; the anesthesia provider maintains sedation depth and physiologic stability. Post-procedure the patient is recovered in a PACU or endoscopy recovery area until discharge criteria are met or the patient is admitted if complications occur.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    00812Anesthesia for lower intestinal endoscopic procedures with endoscope introduced into the duodenumAlternative anesthesia code when endoscope is advanced into the duodenum; closely related based on extent of endoscope insertion.
    00740Anesthesia for upper gastrointestinal endoscopic proceduresMay be used when combined upper and lower endoscopy are performed during same operative session, requiring separate anesthesia coding considerations.
    45378Colonoscopy, flexible, diagnostic, including collection of specimen by brushing or washing, when performed (separate procedure codes exist for biopsy/polypectomy)The primary gastroenterology procedure typically performed during the anesthetized session; anesthesia code 00811 covers the anesthesia portion.
    45385Colonoscopy with removal of tumor(s), polyp(s), or other lesion(s) by snare techniqueTherapeutic colonoscopic interventions that may occur during the same session and affect anesthesia time and complexity.
    99152Moderate sedation services provided by the physician performing a diagnostic or therapeutic service, initial 15 minutesCaptures non-anesthesia moderate sedation when the proceduralist provides sedation rather than a qualified anesthesia provider; relevant when anesthesia services are not billed.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    74Modifier ‑74 indicates an outpatient hospital or ASC procedure that was discontinued after anesthesia was administered and after the procedure had begun. Use this modifier when anesthesia (local,…- Use modifier -74 when a procedure in an outpatient hospital or ASC setting is terminated after anesthesia has been administered and after the procedure has commenced (for example, after incision,…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    207RC0000XCardiovascular Disease PhysicianAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threaten…
    207K00000XAllergy & Immunology PhysicianAn allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Select…
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    101YS0200XSchool CounselorBehavioral Health & Social Service Providers · Counselor
    207SG0201XClinical Genetics (M.D.) PhysicianA clinical geneticist demonstrates competence in providing comprehensive diagnostic, management and counseling services for genetic disorders.
    364SP2800XPerioperative Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers · Clinical Nurse Specialist
    207PT0002XMedical Toxicology (Emergency Medicine) PhysicianMedical toxicologists are physicians who specialize in the prevention, evaluation, treatment and monitoring of injury and illness from exposures to dr…

    Related Payer Policy Updates

    Specialty: Anesthesiology1 / 3

    7 rows

    PolicyPayerEffective Date
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Intravenous Anesthetics for the Treatment of Chronic Pain and Psychiatric or Substance Use DisordersPremera Bluecross2026-07-01
    Elective Inpatient Services (for Idaho Only)UnitedHealthcare2026-06-01
    Sites of Servicepriority health2026-06-01
    Coverage for Ambulatory Surgery Unit (ASU)/Outpatient Facility and Anesthesia for Dental Servicesuniverahealthcare2026-05-21

    Related Codes

    CPT-00800-LOWER-ANTERIOR-ABDOMINAL-WALL-ANESTHESIA

    CPT 00800: Anesthesia for Lower Anterior Abdominal Wall Procedures

    CPT-00802-PANNICULECTOMY-LOWER-ANTERIOR-ABDOMINAL-WALL-ANESTHESIA

    CPT 00802: Anesthesia for Panniculectomy, Lower Anterior Abdominal Wall

    CPT-00812-ANESTHESIA-COLONOSCOPY-BELOW-DUODENUM

    CPT 00812: Anesthesia for Colonoscopy Accessing Intestines Below Duodenum

    CPT-00813-ANESTHESIA-COMBINED-UPPER-LOWER-INTESTINAL-ENDOSCOPY

    CPT 00813: Anesthesia for Combined Upper and Lower Intestinal Endoscopy

    CPT-00820-ANESTHESIA-LOWER-POSTERIOR-ABDOMINAL-WALL-PROCEDURES

    CPT 00820: Anesthesia for Lower Posterior Abdominal Wall Procedures

    CPT-00830-LOWER-ABDOMINAL-HERNIA-ANESTHESIA-UNSPECIFIED

    CPT 00830: Anesthesia for Lower Abdominal Hernia Repair, Unspecified

    CPT-00832-ANESTHESIA-LOWER-ABDOMEN-HERNIA-REPAIR

    CPT 00832: Anesthesia for Lower Abdominal Hernia Repair

    CPT-00834-INFANT-LOWER-ABDOMEN-HERNIA-ANESTHESIA

    CPT 00834: Anesthesia for Infant Lower Abdominal Hernia Repair

    CPT-00836-ANESTHESIA-INFANT-LOWER-ABDOMINAL-HERNIA-REPAIR

    CPT 00836: Anesthesia for Infant Lower Abdomen Hernia Repair

    CPT-00840-LOWER-ABDOMEN-INTRAPERITONEAL-ANESTHESIA-LAPAROSCOPY

    CPT 00840: Anesthesia for Lower Abdominal Intraperitoneal Procedures

    Showing 1–10 of 26

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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