CPT 93299 Billing: Monitor Remote Technical

CPT 93299 is CPT's technical-only code for remote monitoring of implantable cardiovascular physiologic monitors and subcutaneous cardiac rhythm monitors. It still appears in code lists, but Medicare does not use it as a separate line, and that catches practices that carried it over from older billing templates.

What CPT 93299 covers

93299 is remote interrogation device evaluation of an implantable cardiovascular physiologic monitor system or subcutaneous cardiac rhythm monitor system, up to 30 days, covering remote data acquisition, receipt of transmissions, technician review, technical support and distribution of results.

What Medicare did with it

2020: CMS created G2066, a Medicare-specific code priced by the carrier, to report this technical component.
2024: in the CY2024 Physician Fee Schedule final rule, CMS deleted G2066 and accepted the practice-expense inputs for 93297 and 93298. The technical component now travels on those codes, billed globally by one entity or split with modifiers 26 and TC when two entities are involved.

The net effect for Medicare: 93299 is not the line to submit, and G2066 no longer exists. Commercial payers differ, so confirm each policy before dropping the code entirely.

How the remote device monitoring family is organised

Pacemakers and defibrillators use a professional code and a technical code. Implantable monitors changed for Medicare in 2024, so read the last three lines carefully.

93294: pacemaker system, remote, physician analysis, review and report. Up to 90 days.
93295: implantable defibrillator system, remote, physician analysis, review and report. Up to 90 days.
93296: pacemaker or defibrillator system, remote, technical. Data acquisition, receipt of transmissions, technician review, technical support and distribution of results. Up to 90 days.
93297: implantable cardiovascular physiologic monitor, remote evaluation. Up to 30 days.
93298: subcutaneous cardiac rhythm monitor, including implantable loop recorders, remote evaluation. Up to 30 days.
93299: CPT's technical-only code for those two monitor types. Medicare does not use it. CMS created G2066 for the technical component in 2020, deleted G2066 for 2024, and accepted the practice-expense inputs on 93297 and 93298 instead. For Medicare the technical component is reported with modifier TC on 93297 or 93298.

Two different clocks. Pacemakers and defibrillators run on a 90-day period; implantable monitors run on 30 days. Billing either one on the wrong cycle is the most common denial in this family.

Not the same as remote physiologic monitoring

These codes are frequently confused with the remote physiologic monitoring family (99453, 99454, 99457 and 99458), which covers monitoring of physiologic parameters such as weight, blood pressure and pulse oximetry using a supplied device.

They are different services with different rules, different time periods and different documentation. A cardiac implantable device being monitored remotely belongs in the 93294 to 93299 family. Billing it under the RPM codes, or the reverse, produces denials that look mysterious until the families are separated.

Reimbursement context

Remote monitoring is a recurring revenue stream rather than a one-off procedure, so the economics depend on billing every eligible period exactly once.

Medicare pays for this code under the Physician Fee Schedule, and the amount depends on where you practise. Each code carries relative value units for physician work, practice expense and malpractice, each adjusted by a geographic practice cost index (GPCI) for the locality, and the total is multiplied by the conversion factor:

(work RVU × work GPCI + practice expense RVU × PE GPCI + malpractice RVU × MP GPCI) × conversion factor

For 2026 the conversion factor is $33.4009 for practitioners who are not qualifying APM participants and $33.5675 for qualifying APM participants, as set in the CY 2026 Physician Fee Schedule final rule (CMS-1832-F; see the CMS fact sheet). Because the RVUs differ by code and the GPCIs differ by locality, what your practice is paid will differ from any national average. Pull the RVUs and the payment for your own locality from the CMS Physician Fee Schedule Look-Up Tool.

Documentation requirements

The device type and model, and the date of implant.
At least one transmission received and reviewed within the 30-day period.
The dates the monitoring period began and ended.
The data elements reviewed, not merely that a transmission arrived.
A dated, signed report of the analysis and any clinical action taken, where the professional component is billed.
Evidence of the technical infrastructure and technician review, where the technical component is billed.
Confirmation that the period has not already been billed for this patient and device.

Common denials and the exact fix

Reported more than once in the same period

The most common denial in this family. The code covers the whole monitoring period, so a second claim inside it is a duplicate no matter how many transmissions arrived.

Fix: track the period start date per patient and per device, and let the billing system rather than the calendar month drive the claim.

93299 submitted to Medicare

Medicare does not use 93299 as a separate technical line.

Fix: report the technical component with modifier TC on 93297 or 93298, or bill 93297 or 93298 globally when one entity provides both parts.

G2066 still in the charge master

G2066 was deleted for 2024, so a claim still carrying it rejects.

Fix: replace it with the TC modifier on the matching 93297 or 93298 line.

Billed by an entity that does not provide the technical service

Where a third-party service receives and processes the transmissions, that entity bills the technical component.

Fix: map each monitoring arrangement to the entity providing data acquisition and technician review, and bill the technical component from there only.

Billed on a 90-day cycle

The 30-day monitors run on a 30-day period. The 90-day technical code belongs to pacemakers and defibrillators and is 93296.

Fix: bill monthly for these devices.

Modifier rules

93294, 93295, 93296: no 26 or TC. The professional and technical work is split through separate codes, so appending a component modifier is redundant and can cause a rejection.
93297, 93298: for Medicare, modifier 26 (professional) and TC (technical) apply when two entities provide the two parts. Billed globally, with no modifier, when one entity provides both.
59 / XE / XP / XS / XU: rarely applicable, and never a route to reporting the same monitoring period twice.
25: on an E/M where a separately identifiable visit occurred, never on the monitoring code.
GY / GA: where a service is statutorily excluded or an advance beneficiary notice is on file, per payer instruction.

NCCI bundling edits

93299 with 93297 or 93298: not used for Medicare, where the technical component is modifier TC on 93297 or 93298. Payers that still accept 93299 treat it as the technical partner of those codes.
93299 reported twice in one 30-day period: duplicate.
93299 with 93296: different device families and different periods.
G2066: deleted for 2024.

Frequently asked questions

Can I bill CPT 93299 to Medicare?

No. Medicare does not use 93299 as a separate technical line. CMS created G2066 for the technical component in 2020, deleted G2066 for 2024, and accepted the practice-expense inputs on 93297 and 93298, so the technical component is reported with modifier TC on those codes. Some commercial payers still accept 93299, so check each payer's policy.

What replaced G2066?

Nothing separate. CMS deleted G2066 in the CY2024 Physician Fee Schedule final rule and moved the technical practice expense onto 93297 and 93298. Billing global or with modifiers 26 and TC on those codes now carries the work G2066 used to.

Who bills the technical component of a 30-day monitor?

The entity that actually provides the data acquisition, receipt of transmissions, technician review and distribution of results. Where a third-party monitoring service does that work, it bills modifier TC on 93297 or 93298 for Medicare, and the practice bills the professional component with modifier 26.

Sources

American Medical Association, CPT 2026 Professional Edition.
Centers for Medicare & Medicaid Services, National Correct Coding Initiative Policy Manual and quarterly edit tables, cms.gov.
Centers for Medicare & Medicaid Services, Physician Fee Schedule Look-Up Tool, cms.gov.
American College of Cardiology, acc.org. AAPC coding resources, aapc.com.

CPT® is a registered trademark of the American Medical Association. Code descriptors are summarised here for billing guidance and are not a substitute for the current CPT codebook. Payer rules and NCCI edits change quarterly; verify against your own payer policy before submission.

Related codes

CPT 93297. Remote implantable physiologic monitor, 30 days.
CPT 93298. Remote subcutaneous rhythm monitor, 30 days.
CPT 93296. Remote pacemaker or ICD check, technical component.

CPT 93299: Remote Monitor Interrogation, Technical Component