CPT code 01916: Angiography anesthesia, diagnostic artery or vein study2026 Medicare rate & RVUs in Massachusetts
Anesthesia for diagnostic catheter-based artery or vein imaging, reported when anesthesia supports a nontherapeutic arteriography or venography examination.
CMS doesn’t publish an office rate for 01916 in Massachusetts.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 01916 covers
This service supports catheter-based imaging that uses contrast to examine arteries or veins for findings such as narrowing, aneurysm, blockage, or impaired venous drainage. An anesthesiologist or CRNA may provide it in a hospital or imaging suite while a radiologist or interventional radiologist performs the vascular study. The anesthesia code represents the anesthesia practitioner’s service, not the imaging interpretation.
Choose this code for a diagnostic arteriography or venography examination, rather than anesthesia for a therapeutic vascular intervention. Cardiac catheterization and noninvasive imaging have separate anesthesia codes. The anesthesia record should identify the diagnostic vascular procedure and document the practitioner’s anesthesia time; the operative or imaging report should establish the vessels examined and diagnostic purpose. This code has 5 base units. Medicare payment is (5 base units + time units) × the locality’s anesthesia conversion factor. Time is measured from anesthesia preparation through the end of personal attendance when the patient can safely enter postoperative care, converted from minutes to 15-minute units to one decimal place; the conversion factor varies by locality.
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 01916 pays more and less in Massachusetts
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Boston, MA | Unavailable | Unavailable |
| Rest of Massachusetts | Unavailable | Unavailable |
How the 01916 rate is calculated
Each of 01916’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 · 01916
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 01916
01916 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 · 01916
Which rate does Medicare pay?
The POS code on the claim line (CMS-1500 box 24B).
POS 11 · non-facility rate · national
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01916 isn’t priced in this setting.
01916 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 01920Cardiac cath anesthesia
- 01920 applies to anesthesia for cardiac catheterization. Use 01916 for diagnostic arteriography or venography outside that cardiac catheterization service.
- 01922Imaging anesthesiaImaging or radiation therapy
- 01922 is for anesthesia during noninvasive imaging or radiation therapy. 01916 involves catheter-based diagnostic imaging of arteries or veins.
- 01924Arterial interventionOther arterial sites
- 01924 applies when the arterial radiology procedure is therapeutic or interventional. 01916 is for diagnostic arteriography.
- 01930Venous intervention anesthesiaOther venous regions
- 01930 applies to therapeutic venous interventional radiology. 01916 is for diagnostic venography.
01916 billing questions
How does this differ from anesthesia for a therapeutic vascular procedure?
Use this code when the catheter-based artery or vein study is diagnostic. Anesthesia for an arterial or venous intervention is reported under the corresponding therapeutic interventional-radiology anesthesia code.
Is this the code for cardiac catheterization?
No. Anesthesia for cardiac catheterization is reported with 01920; this code is for diagnostic arteriography or venography.
Does this code describe the angiogram or its interpretation?
No. It represents the anesthesia practitioner’s service, not the imaging acquisition or interpretation.
How are anesthesia time units calculated?
CMS converts anesthesia minutes into 15-minute units, rounded to one decimal place; for example, 38 minutes equals 2.5 time units. Time begins with anesthesia preparation and ends when personal attendance ends and the patient can safely be placed under postoperative care.
What documentation supports choosing this code?
The anesthesia record should support the anesthesia service and its time. The procedure report should identify the vessels examined and show that the catheter-based study was diagnostic rather than therapeutic.
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
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