Billing code 93040: Rhythm ECGMedicare rate & RVUs in Guam
Reports a one-to-three-lead rhythm electrocardiogram, including its tracing and interpretation, for evaluation or documentation of a cardiac rhythm.
Medicare pays $16.03 for 93040 in the office in Guam (Hawaii, Guam). Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 93040 covers
This service includes a limited rhythm electrocardiogram using one to three leads, with the tracing and interpretation/report treated as a complete service. It can document rhythm during evaluation of palpitations, suspected arrhythmia, or a change in cardiac rhythm. Clinical staff may obtain the tracing in an office or bedside setting, and a qualified clinician interprets it and records the findings. Unlike a standard 12-lead ECG, this is a limited-lead rhythm study.
Report 93040 when both the tracing and interpretation/report are furnished. Documentation should support the clinical reason, the tracing obtained, and the clinician’s interpretation. When only the tracing is furnished, use 93041; when only the interpretation/report is furnished, use 93042. CMS identifies 93040 as a global service with separate codes for its technical and professional components. The cardiovascular diagnostic multiple procedure reduction affects the technical component; it does not reduce the professional component under this rule.
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.
93040 in Hawaii, Guam
| Payment locality | Office | Facility |
|---|---|---|
| Hawaii, Guam | $16.03 | Unavailable |
How the 93040 rate is calculated
Each of 93040’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 · 93040
RVUs × geographic indexes × conversion factor
Work0.15
0.15 RVUs× 1.000 GPCI
Practice expense0.28
0.28 RVUs× 1.000 GPCI
Malpractice0.02
0.02 RVUs× 1.000 GPCI
Adjusted RVUs
0.4500
Conversion factor
$33.4009
Medicare rate
$15.03
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 93040
The CMS indicators that decide how 93040 is paid alongside other services.
CMS payment indicators · 93040
Rhythm ECG
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 6 | Diagnostic cardiovascular reduction applies to the technical component. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 4 | Global test only. |
93040 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 93000Electrocardiogram (ECG)
- Use 93040 for a one-to-three-lead rhythm study. Use 93000 for a complete 12-lead ECG when both tracing and interpretation are furnished.
- 93041Rhythm ECG
- 93041 covers only the rhythm tracing. 93040 includes the tracing and its interpretation/report.
- 93042Rhythm ECG
- 93042 covers only the rhythm ECG interpretation and report. 93040 includes that work plus the tracing.
- 93005ECG tracing
- 93005 is the tracing-only component for a complete ECG; 93040 is the global service for a limited-lead rhythm ECG.
93040 billing questions
How does 93040 differ from a complete ECG?
93040 is a limited rhythm study using one to three leads. A complete ECG uses a 12-lead tracing and is reported with 93000 when both tracing and interpretation are furnished.
Can 93040 be reported when only the tracing is performed?
No. Report 93041 for the rhythm tracing alone; 93040 includes both the tracing and interpretation/report.
What code applies when only the interpretation is furnished?
Report 93042 for the interpretation and report without the tracing. Use 93040 when both parts of the rhythm study are furnished.
Should modifiers 26 or TC be appended to 93040?
The rhythm ECG components have separate codes: 93041 for the tracing and 93042 for the interpretation/report. Use the applicable component code when only that portion is furnished.
How does the multiple procedure reduction affect 93040?
The cardiovascular diagnostic multiple procedure reduction applies to the technical component. The professional interpretation component is not reduced under this rule.
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
Show the CMS file lines behind this rate
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