CPT code 00812: Colonoscopy anesthesia, screening colonoscopy2026 Medicare rate & RVUs in Illinois
Anesthesia for screening colonoscopy supports lower-intestinal endoscopic screening and is reported separately from anesthesia for diagnostic or therapeutic lower endoscopy.
CMS doesn’t publish an office rate for 00812 in Illinois.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
Your location
On this page 9 sections
What 00812 covers
Code 00812 represents anesthesia care for a screening colonoscopy, an endoscopic examination of the colon performed to screen for colorectal disease. An anesthesiologist or CRNA may provide the service in an endoscopy unit, ambulatory surgery center, or hospital; the anesthesia professional reports the anesthesia, while the endoscopist reports the examination. Average-risk and high-risk screening colonoscopies are commonly represented by G0121 and G0105, respectively.
Choose 00812 for a screening colonoscopy; use 00811 for lower-intestinal endoscopy performed for a diagnostic or therapeutic indication, and 00813 when upper and lower GI endoscopic procedures are performed in the same anesthesia encounter. The anesthesia record should support the screening indication, procedure performed, practitioner attendance, and anesthesia start and stop times. This code has 3 base units. Medicare payment is (3 base units + time units) × the locality’s anesthesia conversion factor; time is counted in minutes from preparation for anesthesia until personal attendance ends and the patient can safely be placed under postoperative care, then converted to 15-minute units to one decimal place.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where 00812 pays more and less in Illinois
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Chicago, IL | Unavailable | Unavailable |
| East St. Louis, IL | Unavailable | Unavailable |
| Rest of Illinois | Unavailable | Unavailable |
| Suburban Chicago, IL | Unavailable | Unavailable |
How the 00812 rate is calculated
Each of 00812’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 00812
RVUs × geographic indexes × conversion factor
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.00
0.00 RVUs× 1.000 GPCI
Malpractice0.00
0.00 RVUs× 1.000 GPCI
Adjusted RVUs
0.0000
Conversion factor
$33.4009
Medicare rate
$0.00
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 00812
00812 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.
Place of service · 00812
Which rate does Medicare pay?
The POS code on the claim line (CMS-1500 box 24B).
POS 11 · non-facility rate · national
—
00812 isn’t priced in this setting.
00812 compared with similar codes
Compare codes · National
00812 vs 00811 vs 00813: Medicare rates
How to choose
- 00811Lower GI endoscopyDiagnostic or therapeutic
- Use 00812 for screening colonoscopy anesthesia. Use 00811 when the lower-intestinal endoscopy is for a diagnostic or therapeutic indication.
- 00813Combined GI anesthesiaUpper and lower endoscopy
- Use 00813 when upper and lower GI endoscopic procedures are performed during the same anesthesia encounter; 00812 is for screening colonoscopy anesthesia.
00812 billing questions
How is 00812 distinguished from 00811?
00812 is for anesthesia for a screening colonoscopy. Use 00811 for lower-intestinal endoscopy performed for a diagnostic or therapeutic indication rather than screening.
What if an upper endoscopy is performed during the same anesthesia encounter?
When both upper and lower GI endoscopic procedures are performed in the same anesthesia encounter, consider 00813 rather than 00812.
Does the endoscopist’s procedure include the anesthesia service?
The endoscopist reports the colonoscopy, and the anesthesia professional reports the anesthesia service on the anesthesia claim.
How are anesthesia units calculated for 00812?
The code has 3 base units. Medicare adds time units, calculated from anesthesia minutes in 15-minute units to one decimal place, and multiplies the total by the locality’s anesthesia conversion factor.
How does Medicare pay when an anesthesiologist medically directs a CRNA?
Medicare pays each professional 50% of the allowance for the personally performed service.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Fee sheets
Put 00812 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
Build my fee sheet