CPT 99457 RPM reimbursement covers the clinical work that turns home readings into patient care. CPT code 99457 describes the first 20 minutes of remote physiologic monitoring treatment management in a calendar month. It is closely tied to what patients experience in a remote patient monitoring (RPM) program. A care team member reviews their data, talks with them, and adjusts their care plan.
This guide explains CPT 99457 requirements under the CY 2026 Medicare Physician Fee Schedule final rule. It covers patient eligibility, time rules, interactive communication, and documentation. It also shows how 99457 fits with other RPM codes. A later section outlines proposed 2027 changes that care teams should follow.
Medicare uses the term “remote physiologic monitoring” for these codes. Most care teams and patients call it remote patient monitoring. Both terms describe the same services in this article.
Why Treatment Management Matters for Patients
A blood pressure cuff or scale in the home does not improve health on its own. Patients benefit when a clinician reviews the data and acts on it. CPT 99457 exists to support that clinical work.
Research supports this. A 2017 individual patient data meta-analysis in PLOS Medicine pooled randomized trials of blood pressure self-monitoring. Self-monitoring alone produced almost no change in systolic blood pressure. When monitoring was paired with intensive, tailored support, systolic pressure fell by about 6 mmHg. That support included medication titration, self-management coaching, and lifestyle counseling.
Treatment management is where that support happens. During 99457 time, care teams may:
- Review trends in blood pressure, weight, glucose, or oxygen saturation.
- Identify readings that suggest a worsening condition.
- Talk with the patient or caregiver about symptoms, medications, and daily habits.
- Coordinate medication changes with the treating practitioner.
- Update the care plan and set goals for the coming month.
For patients with hypertension, heart failure, diabetes, or COPD, this steady contact can catch problems earlier. It also gives patients a clear point of contact between office visits.
What Changed for CPT 99457 in 2026
The core of CPT 99457 did not change in 2026. It still describes the first 20 minutes of treatment management time in a calendar month. CMS kept its existing valuation for the code in the CY 2026 final rule.
What changed is the code set around it. The CPT Editorial Panel created two new RPM codes. CMS finalized them for Medicare starting January 1, 2026:
- CPT 99445 describes device supply with 2 to 15 days of data transmission in a 30-day period.
- CPT 99470 describes the first 10 minutes of treatment management in a calendar month.
These codes give care teams a way to report shorter monitoring periods and lighter-touch months. That matters for patients whose care needs vary. Examples include patients recovering after a hospital stay or those whose readings have stabilized.
The table below summarizes the 2026 RPM code set.
| CPT Code | What It Describes | Threshold |
|---|---|---|
| 99453 | Initial device setup and patient education | Once per episode of care |
| 99445 | Device supply with data transmission | 2 to 15 days in 30 days |
| 99454 | Device supply with data transmission | 16 to 30 days in 30 days |
| 99470 | Treatment management, first 10 minutes | Calendar month |
| 99457 | Treatment management, first 20 minutes | Calendar month |
| 99458 | Treatment management, each additional 20 minutes | Add-on to 99457 |
| 99091 | Collection and interpretation of data by a physician or QHP | 30 minutes in 30 days |
CPT 99457 Requirements
Medicare sets several conditions for CPT 99457 RPM reimbursement. The CMS Telehealth and Remote Monitoring MLN booklet summarizes them. Each one supports safe, appropriate use of remote patient monitoring.
An Established Patient Relationship
RPM requires an established relationship between the patient and the billing practitioner. This helps ensure the practitioner knows the patient’s history before monitoring begins. Patients who started RPM during the COVID-19 public health emergency are treated as established patients.
An Acute or Chronic Condition
RPM can support patients with acute or chronic conditions. A chronic diagnosis is not required. Common uses include hypertension, heart failure, diabetes, COPD, and post-surgical recovery. Monitoring must be medically reasonable and necessary for the patient’s condition.
Patient Consent
The patient must consent to RPM services. CMS requires consent at the time RPM services are furnished. Consent is also a natural moment to explain how monitoring works and who will be in contact.
A Qualifying Medical Device
The device must meet the FDA definition of a medical device. It must collect physiologic data electronically and upload it automatically to a secure location. Readings a patient types in or reports verbally do not meet this standard.
At Least 20 Minutes of Treatment Management Time
CPT 99457 requires at least 20 minutes of treatment management time in a calendar month. Clinical staff, physicians, or qualified health care professionals can contribute this time. This time can include data review, care planning, and care coordination. It also includes time spent in live conversation with the patient or caregiver.
Real-Time Interactive Communication
The 2026 code descriptor requires at least one real-time interactive communication with the patient or caregiver during the month. CMS has defined this as, at minimum, synchronous two-way audio. Video can enhance the interaction. Text messages and secure portal messages do not count as the required live interaction.
This material is provided for general informational and educational purposes only and does not constitute legal, compliance, billing, coding, or reimbursement advice. CPT® codes, descriptions, and Medicare payment rates referenced here are drawn from publicly available sources, are subject to change, and may vary by payer, locality, and patient circumstances. Tenovi makes no representation or guarantee regarding coverage, payment, or the appropriateness of any code for a particular patient or service, and any presented are illustrative only. Providers are solely responsible for independently determining medical necessity and applicable coding, coverage, documentation, and billing requirements and for submitting accurate claims. Consult applicable payer guidance and qualified billing, coding, compliance, or legal professionals before making billing decisions. CPT® is a registered trademark of the American Medical Association.
Who Can Furnish and Bill CPT 99457
Only physicians and non-physician practitioners eligible to bill evaluation and management services can bill remote monitoring. This includes physicians, nurse practitioners, and physician assistants, among others.
The work itself can be shared across the care team. Under current Medicare rules, auxiliary personnel can furnish RPM services under the general supervision of the billing practitioner. General supervision means the practitioner oversees the service but does not need to be physically present.
CPT distinguishes between two groups of care team members:
- A physician or other qualified health care professional is qualified by education, training, and licensure to perform a service within their scope of practice. They report that service independently.
- Clinical staff work under the supervision of a physician or qualified health care professional. They may perform or assist with a service, but they do not report it on their own.
Only one practitioner can bill remote monitoring for a patient in a 30-day period. Care teams should confirm that no other practice is already billing RPM for the same patient.
How CPT 99457 Works With Other RPM Codes
CPT 99457 is one part of a monitoring episode. Each code describes a different piece of the patient’s experience.
Setup and education come first, reported with CPT code 99453. Device supply and data transmission follow. CPT 99454 applies to 16 or more days, and CPT 99445 applies to 2 to 15 days. Treatment management is reported with 99457, CPT 99470, or the add-on CPT 99458.
One point often causes confusion. The 2 to 15 day and 16-day data thresholds apply to the device supply codes. CMS states that these day counts do not apply to treatment management codes 99457 and 99458.
Treatment Management Time by Month
Here is how treatment management time typically maps to codes in a single calendar month:
- 10 to 19 minutes with at least one live interaction: CPT 99470.
- 20 to 39 minutes with at least one live interaction: CPT 99457.
- 40 to 59 minutes: CPT 99457 plus one unit of CPT 99458.
- 60 minutes or more: CPT 99457 plus additional units of CPT 99458, per payer rules.
CPT 99470 and CPT 99457 both describe the first block of time in a month. Care teams report one or the other, based on total time.
Combining RPM With Care Management Services
RPM can be billed in the same period as several care management services. These include chronic care management, principal care management, and transitional care management. Behavioral health integration and chronic pain management also qualify. Time and effort cannot be counted twice. For example, minutes counted toward 99457 cannot also count toward a chronic care management code.
RPM and remote therapeutic monitoring (RTM) cannot be billed together for the same patient. Care teams should choose the program that best fits the patient’s clinical needs.
Does an RPM Device Need to Be FDA-Cleared?
Medicare requires a device that meets the FDA definition of a medical device. It does not require FDA clearance specifically. Many health systems and practices still choose FDA-cleared devices. Clearance means the FDA has reviewed the device before it reaches the market.
FDA registration is different from clearance. A registered device is listed with the FDA. Registration alone does not mean the FDA reviewed it for safety and effectiveness. Care teams should ask vendors to confirm clearance status for each device.
Devices commonly used in RPM programs include:
- Blood pressure monitors
- Weight scales
- Pulse oximeters
- Blood glucose meters
- Peak flow meters
- Thermometers
Many patients live with more than one condition and use several devices. Device supply is still reported once per patient per 30-day period, regardless of the number of devices. Treatment management time reflects the care provided across all of the patient’s data.
Documentation Best Practices for CPT 99457
Clear documentation supports patient care and accurate claims. It also shows how monitoring shaped clinical decisions. Care teams can use this checklist each month:
- Condition monitored. Record the acute or chronic condition and why monitoring is medically necessary.
- Consent. Note when and how the patient agreed to RPM services.
- Time log. Track minutes by date, activity, and the team member who performed the work.
- Live interaction. Record the date, length, and mode of each real-time conversation.
- Data reviewed. Summarize the readings and trends reviewed during the month.
- Clinical actions. Document care plan updates, medication changes, referrals, or patient education.
- Supervision. Identify the billing practitioner overseeing the care.
Consistent records also help practices respond to audits. The HHS Office of Inspector General has called for more oversight of RPM in Medicare. Programs that document each part of the service are better prepared for that scrutiny.
What the CY 2027 Proposed Rule Could Change
On July 14, 2026, CMS released the CY 2027 Physician Fee Schedule proposed rule. It includes several proposals that would affect CPT 99457 and the rest of the RPM code set. None of these changes are final.
CMS proposed to:
- Require a separately reportable initiating visit, in person or by telehealth, before RPM or RTM begins.
- Extend the established patient requirement to RTM.
- Pay for RPM and RTM only when clinical staff are direct employees of the billing practitioner or practice.
CMS also asked for comments on replacing the current RPM and RTM CPT codes with four HCPCS codes for Medicare. This was a request for comment, not a formal proposal.
The comment period closed on September 14, 2026. CMS typically releases the final rule in early November. If finalized, the changes would take effect January 1, 2027. These proposals apply to Medicare only. Medicaid programs and commercial payers set their own policies. Tenovi will update this guide when the final rule is published.
Working With an RPM Partner
Many providers work with RPM companies to run their programs. A partner can manage device logistics, patient onboarding, connectivity, and data delivery into clinical workflows. This lets care teams spend their time on patients.
Under current 2026 Medicare rules, auxiliary personnel can furnish RPM services under general supervision. The CY 2027 proposal would change who can furnish that time for Medicare patients. Providers and their partners should review the final rule closely and plan staffing models together.
Frequently Asked Questions About CPT 99457
1) What is CPT code 99457 used for?
CPT 99457 describes the first 20 minutes of remote physiologic monitoring treatment management in a calendar month. It covers the time care teams spend reviewing data, managing care, and communicating with the patient or caregiver.
2) How many minutes are required to bill CPT 99457?
At least 20 minutes of treatment management time in a calendar month. The month must also include at least one real-time interactive communication with the patient or caregiver.
3) Does a phone call count as interactive communication for CPT 99457?
Yes. CMS defines interactive communication as, at minimum, real-time synchronous two-way audio. A live phone call meets this standard. Text messages and portal messages do not.
4) Can CPT 99457 be billed with chronic care management?
Yes. Medicare allows RPM and chronic care management for the same patient in the same period. The same minutes cannot be counted toward both services.
5) Do patients need 16 days of readings for CPT 99457?
No. The 16-day threshold applies to device supply code 99454. CMS states that day-count requirements do not apply to treatment management codes 99457 and 99458.
6) What is the difference between CPT 99457 and CPT 99470?
CPT 99470 describes the first 10 minutes of treatment management in a month. CPT 99457 describes the first 20 minutes. Care teams report one or the other based on total time.
Understanding CPT 99457 RPM Reimbursement
CPT 99457 RPM reimbursement supports the clinical side of remote patient monitoring. It covers at least 20 minutes of monthly treatment management, including a live conversation with the patient or caregiver. Patients must have an established relationship with the billing practitioner, give consent, and use a qualifying medical device. In 2026, new codes 99445 and 99470 give care teams more flexibility for shorter monitoring periods and lighter-touch months. The CY 2027 proposed rule could change initiating visit and staffing requirements. Care teams should watch for the final rule this fall. Across every change, the purpose stays the same: timely, proactive care that helps patients stay healthier at home.
Tenovi provides cellular and Bluetooth remote monitoring devices, the Tenovi Cellular Gateway, and device fulfillment. We work exclusively with companies that deliver remote care to patients. Our partners include RPM and RTM companies, chronic care management companies, and telehealth platforms. We also serve health systems and payers. Contact us today for a free demo and consultation.
