Summary & Overview
CPT 00813: Anesthesia for Combined Upper and Lower Intestinal Endoscopy
CPT code 00813 identifies anesthesia services for combined upper and lower intestinal endoscopy when an endoscope is introduced into the intestines both above and below the duodenum. This code captures complexity when a single anesthetic episode covers diagnostic or therapeutic endoscopic examination of multiple contiguous intestinal segments and is relevant for facility and professional billing across ambulatory and inpatient procedural settings. Nationally, accurate use of this code affects anesthesia reporting, case mix and resource allocation for endoscopic services.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise view of clinical context and billing scope for 00813, payer coverage considerations, and common modifiers associated with anesthesia services. The publication outlines benchmarks and policy considerations affecting anesthesia billing for combined endoscopic procedures, clarifies typical sites of service, and highlights areas where coding specificity matters for fee schedules and claim adjudication. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 00813 describes anesthesia services provided when an anesthesia practitioner manages anesthesia for a patient undergoing both upper and lower intestinal endoscopy during a single episode. The procedure involves the surgical provider introducing an endoscope into the intestines both above and below the duodenum, the portion of bowel adjacent to the stomach.
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Service type: Anesthesia for combined upper and lower intestinal endoscopy
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Typical site of service: Endoscopy suite or ambulatory surgical center (facility-based procedural setting)
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with iron-deficiency anemia and intermittent melena is scheduled for combined upper and lower intestinal endoscopy under monitored anesthesia care. The surgeon will perform an esophagogastroduodenoscopy (to the duodenum) followed by a colonoscopy during the same encounter. The anesthesia provider administers sedation or general anesthesia and continuously monitors airway, ventilation, hemodynamics, and depth of sedation throughout both procedures. Pre-procedure evaluation documents ASA physical status, relevant comorbidities (e.g., coronary artery disease, chronic obstructive pulmonary disease), airway assessment, medication reconciliation, and informed consent specific to anesthesia risks. Intra-procedure documentation records type and doses of anesthetic agents, airway management (e.g., nasal trumpet, laryngeal mask airway, endotracheal tube), use of vasoactive medications if needed, and any complications or events. Post-anesthesia care includes recovery room handoff, discharge criteria, and any post-procedure instructions. Billing uses the anesthesia code 00813 to capture services for anesthesia when the endoscope is introduced into the intestines both above and below the duodenum in the same session.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
23 | Unusual Anesthesia | Use when markedly medically necessary conditions require general anesthesia for a procedure normally performed with local or no anesthesia. |
52 | Reduced Services | Use when the anesthesia service is partially reduced or not completed as originally planned. |
53 | Discontinued Procedure | Use when the anesthesia service is terminated due to extenuating circumstances or patient condition prior to completion. |
62 | Two Surgeons | Use when two surgeons work together as primary surgeons; can affect anesthesia documentation if surgical complexity increases. |
74 | Return to Operating Room After Anesthesia | Use when the patient returns to the operating/procedure room for a related procedure during the same anesthesia session. |
78 | Unplanned Return to OR for Related Procedure/Early Complication | Use when an anesthesia provider performs services for an unplanned return for a related procedure during the global period. |
91 | Repeat Clinical Diagnostic Laboratory Test | Use when repeat biologic specimen testing is required; sometimes appended to tests ordered perioperatively (less commonly applied to anesthesia claims). |
AA | Anesthesia by Anesthesiologist | Use to indicate the anesthesia services were personally performed by a physician anesthesiologist. |
AD | Medical Supervision by a Physician: More Than Four Concurrent Anesthesia Procedures | Use when the physician supervises more than four concurrent anesthesia procedures. |
QX | CRNA Service with Medical Direction by a Physician | Use when a CRNA performs the anesthesia under the medical direction of a physician. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207L00000X | Anesthesiology | Physician anesthesiologists provide general and monitored anesthesia care for endoscopic procedures. |
| 2084P0800X | Gastroenterology | Gastroenterologists perform the endoscopic procedures; coordination with anesthesia is required. |
| 367A0000X | Nurse Anesthetist (CRNA) | CRNAs frequently provide anesthesia services for gastrointestinal endoscopy under various supervision models. |
| 2084N0400X | Colorectal Surgery | Colorectal surgeons may perform lower intestinal endoscopy or combined procedures in selected cases. |
| 207R00000X | Surgery | General surgeons may perform combined upper and lower endoscopy in operative settings. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
K92.1 | Melena | Common indication for combined upper and lower endoscopy to locate GI bleeding source. |
D50.9 | Iron deficiency anemia, unspecified | Often prompts evaluation with both upper and lower endoscopy to identify chronic blood loss. |
K52.9 | Noninfective gastroenteritis and colitis, unspecified | May present with symptoms prompting combined endoscopic evaluation. |
K21.9 | Gastroesophageal reflux disease without esophagitis | May be evaluated during upper endoscopy portion of combined procedure. |
K57.30 | Diverticulosis of large intestine without perforation or abscess | Potential finding on colonoscopy; lower intestinal evaluation addresses this. |
R19.5 | Other fecal abnormalities | Abnormal stool findings may lead to both upper and lower endoscopic evaluation. |
R10.9 | Abdominal pain, unspecified | Non-specific abdominal pain is a common indication for diagnostic endoscopic evaluation. |
Z98.890 | Other specified postprocedural states | Relevant for patients with prior surgeries where combined endoscopy is clinically indicated. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
00740 | Anesthesia for procedures on the upper abdomen; not otherwise specified | May be used when anesthesia is provided solely for upper abdominal endoscopic procedures or when separate reporting is needed for distinct abdominal regions. |
00797 | Anesthesia for lower intestinal endoscopic procedures | Applicable when anesthesia is provided specifically for lower intestinal endoscopy; may be relevant if services are reported separately instead of combined under 00813. |
43239 | Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple | Represents the diagnostic/therapeutic upper endoscopic portion that reaches the duodenum; typically performed by the surgeon while anesthesia is reported with 00813. |
45385 | Colonoscopy, flexible; with biopsy, single or multiple | Represents the lower intestinal endoscopic portion; performed during the same session and clinically linked to the anesthesia service coded with 00813. |
99143 | Moderate sedation services provided by a physician (for initial 15 minutes) | May be reported by the physician providing moderate sedation if separate from the anesthesia service; documentation must support separate reporting. |