# CPT 93978

> Medicare paid $192.96 for CPT 93978 in the office (non-facility) setting and $192.96 in a facility under the Q1 2021 Physician Fee Schedule, effective January 2021. These are the national allowed amounts before the ~2% sequestration cut and before locality (GPCI) adjustment. This is a 0.5% increase from the previous quarter.

## What it is

A Doppler ultrasound of the large central blood vessels of the trunk - the abdominal aorta, the inferior vena cava, the iliac vessels branching toward the legs - and of surgical bypass grafts, measuring vessel size and how blood is moving through them. It is the standard non-invasive way to watch an aneurysm over time or confirm a graft is still open. This is the complete study; a shorter follow-up version exists for limited or single-vessel checks.

## Selected release

- Release: Q1 2021 (2021 A)
- Effective: January 1 – March 31, 2021
- Status indicator: A
- Office (non-facility) national allowed amount: $192.96
- Facility national allowed amount: $192.96
- Sequestration: not applied

## RVUs and formula

- Work RVU: 0.80
- Office (non-facility) practice expense RVU: 4.61
- Facility practice expense RVU: 4.61
- Malpractice RVU: 0.12
- Conversion factor: 34.8931
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q1 2021)
- CMS file: https://www.cms.gov/files/zip/rvu21a-updated-01052021.zip
- Parsed file: PPRRVU21_JAN.csv, row 16,514
- Canonical page: https://localishealth.com/cpt/93978/2021/A
- Release-specific citation URL: https://localishealth.com/cpt/93978/2021/A
- Last significant update: 2026-08-04T03:10:16+00:00