Search all medical codes

Anesthesia for lower intestinal endoscopic procedures, endoscope introduced distal to duodenum; not otherwise specified

CPT4 code

Name of the Procedure:

Anesthesia for Lower Intestinal Endoscopic Procedures, Endoscope Introduced Distal to Duodenum (Commonly referred to as Colonoscopy or Sigmoidoscopy Anesthesia)


This procedure involves administering anesthesia to a patient undergoing a lower intestinal endoscopy, such as a colonoscopy or sigmoidoscopy, where the endoscope is inserted beyond the duodenum into the lower intestines.


The primary aim is to provide pain relief and sedation to the patient undergoing endoscopic examination and treatment of the lower intestines. This ensures the procedure is comfortable and safe for the patient.


This procedure is indicated for patients requiring diagnostic or therapeutic endoscopic examination of the lower intestines, often due to symptoms such as unexplained abdominal pain, rectal bleeding, chronic diarrhea, or abnormal results from other tests like stool tests or imaging studies.


Patients are typically instructed to fast for a certain period before the procedure and may need to adjust or stop certain medications as directed by their physician. A bowel prep involving laxatives is usually required to clear the intestines. Pre-procedure diagnostic tests may include blood work and a review of the patient’s medical history.

Procedure Description

  1. The patient is positioned comfortably, usually lying on their side.
  2. An IV line is inserted to administer sedatives and pain medications.
  3. Continuous monitoring of vital signs is performed.
  4. The anesthesiologist or nurse anesthetist administers the anesthetic agents.
  5. Once the patient is adequately sedated, the endoscopist proceeds with the endoscopic examination.
  6. Throughout the procedure, the anesthesia provider adjusts dosages as needed to maintain comfort and safety.
  7. Post-procedure, the patient is monitored until the effects of anesthesia wear off.

The tools used include an IV catheter, monitoring equipment (for heart rate, oxygen saturation, and blood pressure), and medications for sedation and pain relief.


The procedure typically takes between 30 to 60 minutes, depending on the extent of the examination and any additional interventions required.


The procedure is usually performed in a hospital’s endoscopy suite, an outpatient clinic, or a specialized surgical center equipped for endoscopic examinations.


The procedure typically involves a gastroenterologist or endoscopist, an anesthesiologist or a nurse anesthetist, and supporting staff such as nurses and medical assistants.

Risks and Complications

Common risks include mild to moderate sedation-related issues like nausea or dizziness. Rare but serious risks include allergic reactions to anesthetic agents, respiratory complications, or cardiovascular events. Potential complications from the endoscopy itself include perforation or bleeding of the intestines.


The main benefits include accurate diagnosis and treatment of lower intestinal conditions with minimal discomfort due to effective pain and sedation management. These benefits are typically realized immediately post-procedure, allowing for prompt therapeutic interventions.


Post-procedure care involves monitoring in a recovery area until the anesthesia effects subside, usually 1-2 hours. Patients should arrange for someone to drive them home and avoid making significant decisions or operating machinery for 24 hours. Follow-up appointments might be scheduled to discuss findings and treatment plans.


Alternative diagnostic methods include non-invasive imaging like CT colonography, although these may not provide as detailed a view as direct endoscopy. Pros and cons should be discussed with a healthcare provider to determine the best approach.

Patient Experience

Patients will likely experience a feeling of sedation or drowsiness during and after the procedure. Effective pain management ensures minimal to no discomfort. Pre-procedure anxiety is common, and patients are typically reassured and thoroughly informed by the medical team regarding what to expect.

Medical Policies and Guidelines for Anesthesia for lower intestinal endoscopic procedures, endoscope introduced distal to duodenum; not otherwise specified

Related policies from health plans

Similar Codes

Contact us to learn more

Choose your own adventure


Send us a message or questions and we can share more details.


Setup a calendar meeting with us; find a time now.