CPT code 01931: Portal intervention anesthesia, intrahepatic or portal system2026 Medicare rate & RVUs in Guam
Anesthesia for therapeutic image-guided procedures involving the intrahepatic or portal circulation, including creation of a transjugular intrahepatic portosystemic shunt.
CMS doesn’t publish an office rate for 01931 in Guam.
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 01931 covers
This service covers anesthesia for therapeutic image-guided intervention directed at the intrahepatic or portal circulation. A typical example is creation of a transjugular intrahepatic portosystemic shunt (TIPS). An anesthesiologist or CRNA may provide the service in an interventional radiology suite or hybrid procedural setting while the interventionalist accesses and treats the portal system.
Choose 01931 for treatment involving the intrahepatic or portal circulation, rather than venous intervention not otherwise specified, arterial intervention, or diagnostic vessel imaging alone. The anesthesia record should identify the therapeutic service and document anesthesia start and end times; the interventional report should establish the treated vascular territory and procedure. This code has 7 base units. Medicare payment is (base units plus time units) multiplied by the locality’s anesthesia conversion factor; time is counted in minutes and converted to 15-minute units to one decimal place, from preparation start until the practitioner is no longer personally attending and the patient can safely enter postoperative care.
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.
01931 in Hawaii, Guam, HI
| Payment locality | Office | Facility |
|---|---|---|
| Hawaii, Guam, HI | Unavailable | Unavailable |
How the 01931 rate is calculated
Each of 01931’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 · 01931
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 01931
01931 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 · 01931
Which rate does Medicare pay?
The POS code on the claim line (CMS-1500 box 24B).
POS 11 · non-facility rate · national
—
01931 isn’t priced in this setting.
01931 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 01930Venous intervention anesthesiaOther venous regions
- Choose 01931 when the therapeutic target is the intrahepatic or portal circulation. Use 01930 for therapeutic interventional radiology involving veins not otherwise specified.
- 01924Arterial interventionOther arterial sites
- 01924 applies to therapeutic interventional radiology involving arteries not otherwise specified; 01931 is for work involving the intrahepatic or portal circulation.
- 01916Angiography anesthesiaDiagnostic artery or vein study
- 01916 is for diagnostic arteriography or venography. Use 01931 when the intrahepatic or portal procedure is therapeutic.
- 01932Central venous anesthesiaThoracic and jugular veins
- 01932 covers therapeutic interventions involving intrathoracic or jugular vessels, while 01931 identifies procedures involving the intrahepatic or portal circulation.
01931 billing questions
When should 01931 be chosen instead of 01930?
Use 01931 for therapeutic intervention involving the intrahepatic or portal circulation. Code 01930 covers therapeutic interventional radiology involving veins not otherwise specified.
Is TIPS a typical procedure for 01931?
Yes. Creation of a transjugular intrahepatic portosystemic shunt is a typical example of a therapeutic procedure involving the portal circulation.
Does 01931 include the TIPS procedure itself?
No. The anesthesia practitioner reports the anesthesia service, while the interventionalist reports the procedure under the applicable procedural code.
What records support reporting 01931?
The anesthesia record should show the service and anesthesia time. The interventional report should identify the procedure and confirm that it involves the intrahepatic or portal circulation.
How are units calculated for Medicare?
The code has 7 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.
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 · Coming soon
Put 01931 and the rest of your codes on one sheet
Your codes at your locality, with payer contracts beside Medicare.
Join the waitlist