G9157 — Transesophageal doppler measurement of cardiac output (including probe placement, image acquisition, and interpretation per course of treatment) for monitoring purposes
G9157 is a HCPCS Level II code for transesophageal doppler measurement of cardiac output (including probe placement, image acquisition, and interpretation per course of treatment) for monitoring purposes. It belongs to the Procedures and Professional Services (Temporary) section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusA
Active code. Paid separately under the physician fee schedule.
- Work RVU
- 2.15
- PE (non-facility)
- 0.32
- PE (facility)
- 0.32
- Malpractice RVU
- 0.18
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of G9157 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 1 unit MAI 2 — Date of Service Edit: Policy · Code Descriptor / CPT Instruction
- outpatient
- 1 unit MAI 2 — Date of Service Edit: Policy · Code Descriptor / CPT Instruction
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for G9157
- Long descriptor
- Transesophageal doppler measurement of cardiac output (including probe placement, image acquisition, and interpretation per course of treatment) for monitoring purposes
- Short descriptor
- Transesoph doppl cardiac mon
- Added
- January 1, 2013
- BETOS
- T2C
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to G9157
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G9157 is not quite right, the correct code is very often within a few positions of it.
- G9147Outpatient intravenous insulin treatment (oivit) either pulsatile or continuous, by any means, guided by the results of measurements for: respiratory quotient; and/or, urine urea nitrogen (uun); and/or, arterial, venous or capillary glucose; and/or potassium concentration
- G9148National committee for quality assurance - level 1 medical home
- G9149National committee for quality assurance - level 2 medical home
- G9150National committee for quality assurance - level 3 medical home
- G9151Mapcp demonstration - state provided services
- G9152Mapcp demonstration - community health teams
- G9153Mapcp demonstration - physician incentive pool
- G9156Evaluation for wheelchair requiring face to face visit with physician
- G9158Motor speech functional limitation, discharge status, at discharge from therapy or to end reportingterminated
- G9159Spoken language comprehension functional limitation, current status at therapy episode outset and at reporting intervalsterminated
- G9160Spoken language comprehension functional limitation, projected goal status at therapy episode outset, at reporting intervals, and at discharge or to end reportingterminated
- G9161Spoken language comprehension functional limitation, discharge status, at discharge from therapy or to end reportingterminated
- G9162Spoken language expression functional limitation, current status at therapy episode outset and at reporting intervalsterminated
- G9163Spoken language expression functional limitation, projected goal status at therapy episode outset, at reporting intervals, and at discharge or to end reportingterminated
- G9164Spoken language expression functional limitation, discharge status at discharge from therapy or to end reportingterminated
- G9165Attention functional limitation, current status at therapy episode outset and at reporting intervalsterminated
Questions about G9157
What is HCPCS code G9157?
G9157 is a HCPCS Level II code for transesophageal doppler measurement of cardiac output (including probe placement, image acquisition, and interpretation per course of treatment) for monitoring purposes. It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G9157?
The CMS HCPCS file marks G9157 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is G9157 paid under the physician fee schedule?
G9157 carries PFS status code A. Active code. Paid separately under the physician fee schedule.