Prepared for Mass General Brigham · Cardiothoracic Surgery Service Line · 2026 Strategy Review · Confidential — not for distribution
Cardiothoracic Surgery · Mass General Hospital & Brigham and Women's

The CABG episode is already mandatory. The 30 days after discharge decide how it performs.

Six Mass General Brigham hospitals entered TEAM as mandatory participants on January 1, 2026 — and coronary artery bypass graft is one of five episode categories. A remote care service line is the operating layer for that 30-day window, and it pays for itself before a single episode is reconciled.

$0.00M
24-Month Net Reimbursement
0%
24-Month Service Line Margin
0
Unique Patients in Active Remote Care (M24)
0
Hospitalizations Avoided (24 mo)
Verified position

You are entering mandatory episode risk from a position of unusual strength.

Every item below was verified against a primary CMS file or Mass General Brigham's own published information, on July 29, 2026. Nothing here is inferred.

✓ CMS participant list

Six hospitals in TEAM, mandatory

MGH (220071), Brigham and Women's (220110), BW Faulkner (220119), Newton-Wellesley (220101), Salem / North Shore Medical Center (220035) and Wentworth-Douglass (300018) all appear on the CMS TEAM participant list as Mandatory participants, 01/01/2026–12/31/2030.

✓ CMS Care Compare

Five-star acute care ratings

MGH, Brigham and Women's, BW Faulkner, Newton-Wellesley and Salem each carry a 5 out of 5 CMS Hospital Overall Rating. The clinical foundation is not the question — the post-discharge operating layer is.

✓ CMS MSSP file

Two ACOs, both Enhanced track

Mass General Brigham ACO, LLC (A4641, since 2019) and Mass General Brigham ACO 2, LLC (A5932, since 01/2026) are both in the MSSP ENHANCED track — the maximum two-sided risk arrangement. Total-cost-of-care accountability is already in place.

✓ CMS inpatient claims

~296 Medicare CABG discharges a year

MGH and Brigham and Women's together recorded 296 Medicare fee-for-service CABG discharges (MS-DRGs 231–236) in CMS data year 2024, plus 520 valve/major cardiothoracic and 349 other cardiothoracic cases. Adult cardiac surgery sits at these two campuses.

✓ Epic

One record, one integration

Mass General Brigham runs Epic enterprise-wide. CoachCare integrates directly and bi-directionally with Epic — enrollment, discrete vitals, documentation and claim generation all inside the environment your teams already use.

✓ CMS enrollment file

A fee-for-service majority in your core market

Suffolk County — MGH, Brigham and Women's and BW Faulkner — runs about 42% Medicare Advantage penetration, meaning a clear majority of Medicare eligibles remain in traditional fee-for-service. That FFS majority is exactly the population TEAM episodes and FFS-billable remote care codes apply to.

✓ CMS Care Compare

CABG outcomes already better than national

MGH's 30-day CABG readmission and mortality rates are both rated Better Than the National Rate, and neither MGH nor Brigham and Women's is penalized on CABG readmissions — both sit below the peer-group median. There is no CABG readmission problem here. That is exactly why the TEAM conversation is about total episode cost, not about fixing a deficit.

✓ CMS participant rosters

No prior episode-model experience — by choice

Mass General Brigham did not participate in BPCI-Advanced (any model year) or CJR. TEAM is the system's first mandatory bundled-payment model. There is no legacy episode-management vendor or workflow to unwind — the operating layer gets designed once, correctly.

Build versus partner

You have already built the chronic layer. This is the post-surgical one.

Mass General Brigham is not a first-time remote monitoring buyer, and this proposal does not pretend otherwise. The question is not whether you can run remote care — you demonstrably can. It is whether the cardiac surgery discharge is covered by what you built.

What Mass General Brigham has built
  • ScaleThe Accelerator for Clinical Transformation and Remote Health teams have managed 10,000+ patients in remote programs (figure published April 2023).
  • FocusHypertension and cholesterol management at scale, plus a navigator- and pharmacist-led program for roughly 1,000 heart failure patients with reduced ejection fraction.
  • DevicesCellular and Bluetooth cuffs that transmit without requiring a smartphone or app — a genuinely well-designed access decision.
  • AcuteHome Hospital lists "recovery after heart surgery" as a supported condition — while the patient is still classified as an inpatient under the CMS waiver.
  • RehabA 2025 collaboration delivering the Benson-Henry Institute intensive cardiac rehabilitation program virtually and in person.
What is not yet covered
  • GapNo outpatient, post-discharge remote monitoring program for cardiac surgery patients operating as a billable service line.
  • GapNo structured hospital-to-home cardiac surgery pathway once the inpatient waiver classification ends.
  • GapNo TCM or RPM billing program attached to the cardiac surgery discharge — the codes that fund the work are unbilled.
  • GapThe cardiac rehabilitation collaboration does not cover remote monitoring, post-surgical or CABG populations.
  • ScopeThe existing chronic programs are built around hypertension, lipids and heart failure — not around a surgical episode with a 30-day clock.
Your own investigators already published the clinical case. A prospective study led from Brigham and Women's fitted more than 100 patients recovering from open-heart surgery with a wearable ECG patch at discharge. 27% had atrial fibrillation detected after they went home — and nearly a quarter of those patients had no documented arrhythmia at any point during their hospital stay. Most episodes were brief enough that routine follow-up would never have caught them. That work was published in August 2025 as a research study. It has not been operationalized into a standing clinical program. The evidence base and the service line are inside the same institution and are not yet connected.
Why 2026, specifically

A mandatory five-year episode model, and a 30-day window nobody owns yet.

TEAM is not a pilot and not an opt-in. It began January 1, 2026, runs through December 31, 2030, and holds the hospital financially accountable for the full cost of an episode from admission through 30 days after discharge.

TEAM — the CABG episode
  • ScopeFive episode categories. Coronary artery bypass graft is one of them — the one that belongs to cardiothoracic surgery.
  • WindowAdmission through 30 days post-discharge. All Medicare Part A and Part B spend in that window counts.
  • PricingProspective regional target prices. New England CABG PY1 preliminary targets run $38,685 to $88,167 depending on MS-DRG, at a 1.5% discount factor.
  • QualityThe Composite Quality Score includes Hospital-Wide All-Cause Readmission — the one PY1 measure a post-discharge monitoring program moves directly.
  • SitesSix MGB hospitals participate. The CABG episode is triggered where CABG is performed: MGH and Brigham and Women's.
Where the remaining variance actually sits
  • NotCABG readmissions. Both hospitals already sit below the peer median and neither is penalized. That performance is an asset to protect, not a deficit to fix.
  • ButTEAM does not pay on the readmission rate alone — it reconciles against all Medicare Part A and Part B spend in the 30-day window.
  • SoThe variance lives in ED presentations, observation stays and unplanned post-acute utilization that never become a readmission and never show up in the readmission measure.
  • SignalMGH's excess-days-in-acute-care measure for heart failure runs above the national average even while its heart failure readmission rate is better than national — the exact pattern of ED and observation burden rather than admissions.
  • QualityThe Composite Quality Score uses Hospital-Wide All-Cause Readmission, not the CABG-specific measure — so a strong CABG rate does not by itself carry the quality score.
The structural point. TEAM holds you accountable for 30 days you currently observe only in fragments — a discharge summary, a phone call, and a follow-up visit around week three. Remote care makes that window continuous and documented. It is the same infrastructure whether it is used to protect an episode, support the two Enhanced-track ACOs, or bill for chronic care management, which is why it is worth building once rather than three times.
A second model arrives in 2027 — and it lands in western Massachusetts, not Boston. The Ambulatory Specialty Model begins January 1, 2027 with a Heart Failure cohort. On the CMS preliminary CY2027 participant list, three Mass General Brigham–affiliated cardiologists appear, billing under the Cooley Dickinson physician organization in Northampton, Greenfield and Springfield. Boston is not a selected ASM geography, so no MGH or Brigham and Women's cardiologist is on the list. This list is preliminary and should be confirmed against the final CMS publication — but it means the heart failure infrastructure has a second, independent reason to exist inside the system.
The service line

One clinical spine, running from the cardiac surgery discharge outward.

The billing stack is not a collection of codes — it is a single continuous pathway that starts the day a cardiac surgery patient leaves the building and does not stop.

Days 0–30

Transitional Care Management

Contact inside two business days, medication reconciliation, and a face-to-face visit inside 7 or 14 days. TCM is the formal handoff — and it is billable at discharge, in the exact window TEAM measures.

Days 0–90

Short-window remote monitoring

Weight, blood pressure and pulse from day one home. Fluid overload and arrhythmia announce themselves in the data days before they announce themselves in the emergency department.

Month 2 onward

Longitudinal RPM, PCM and CCM

The surgical patient becomes a chronic cardiac patient. Guideline-directed medical therapy titration, heart failure surveillance and comorbidity management continue as a managed process rather than an annual event.

CY2026 billing stack — cardiothoracic service line

ProgramCodesClinical role in the cardiothoracic pathway
TCM99495 / 99496The post-cardiac-surgery handoff — contact, reconciliation, and the early follow-up visit inside the TEAM episode window.
RPM99453, 99445, 99454, 99470, 99457, 99458Daily physiologic data — weight, BP, pulse — from the first day home. Includes the CY2026 short-window device and monitoring codes (99445 / 99470).
PCM99426 / 99427Single-condition management for the dominant cardiac diagnosis where a patient does not carry two qualifying chronic conditions.
CCM99490 / 99439Two or more chronic conditions — near-universal in the post-CABG population, where diabetes, CKD and heart failure travel together.

Reimbursement reflects the Massachusetts locality of the Medicare Physician Fee Schedule. Rates are locality-specific and should be confirmed against the final CY2026 schedule for each billing site.

Why there is no primary-care arm in this proposal. A cardiothoracic surgery service line does not own a longitudinal primary-care panel, so Advanced Primary Care Management is deliberately out of scope here. TEAM's continuity-of-care referral requirement is met by connecting patients back to their existing primary care physicians with a shared care plan and data exchange — not by a parallel primary-care billing arm.
Integration

It lives inside Epic. Your teams do not learn a second system.

Mass General Brigham runs Epic across the enterprise. CoachCare's integration is direct and bi-directional — built so a remote care program becomes part of the existing clinical workflow rather than a parallel one.

Pillar 01

Integrated enrollment

Enrollment flags and trigger ordering sit inside the clinical workflow. The CoachCare team enrolls qualified Medicare patients on the service line's behalf, and enrollment status is visible in Epic in real time.

Pillar 02

Exchange of health history

Bi-directional at intake, so the monitoring program starts with the chart rather than re-collecting it.

Pillar 03

Discrete vitals

Device readings land in the chart as discrete vitals — trendable, reportable, and usable in clinical decision support. Not PDFs.

Pillar 04

Compliance documentation

Time, touchpoints and interventions documented to an audit-ready standard inside the record.

Pillar 05

Automated claim generation

CoachCare is the only care-management application integrated with Epic that provides automated claims creation — removing the manual per-patient, per-month claim step entirely.

Speed

Under five days to service

Patients begin receiving remote care services in fewer than five days from the enrollment flag.

"Key to achieving a program that is efficient, effective and sustainable is creating a seamless, intuitive user experience for the patient and provider — and that is what our integration with Epic accomplishes."
Clinical governance

The economics prove it pays. This is what proves it is safe.

A monitoring program that generates alerts without disciplined escalation creates work, not safety. Every reading routes through one shared escalation engine with defined thresholds, defined owners and documented outcomes.

1

One engine, every reading

Critical values escalate regardless of whether the patient reports symptoms. Out-of-range but non-critical readings trigger a retake and a symptom check first, so a cuff error does not become a phone call to a surgeon.

2

Trend is defined, not inferred

A trend means three readings at least an hour apart for blood pressure, or three within seven days for heart rate. The definition is objective, so escalation is consistent between coaches and across shifts.

3

Unreachable is still escalated

No answer means voicemail plus a scheduled callback — and if the value is critical or the trend is established, escalation proceeds anyway. Silence is never read as stability.

The emergent pathway

Chest pain, new shortness of breath, stroke signs, syncope, worst-ever headache or sudden swelling trigger a 911 call with the patient still on the line. If the patient refuses, the care team routes to the clinic; if contact is lost and the presentation is emergent, CoachCare activates 911 directly.

CoachCare's urgent and emergent policy supersedes any client-specific escalation preference. This is not configurable, and it is the reason the program can be trusted with a post-surgical population.

Three-way routing — signal, not noise

Emergency routes to 911. Non-critical but actionable routes to a defined member of the practice team. Stable and resolved is documented as an FYI in the record. The service line sees what needs a clinician and is not buried in what does not.

The post-discharge three-touch cadence

Any hospitalization or ER visit in the last 60 days triggers a structured cadence: days 1–2, days 5–8, and days 12–14. That cadence maps precisely onto the first two weeks of the TEAM episode window, where readmission risk concentrates — and it is the mechanism behind the modeled hospitalizations avoided.

Every escalation documents the vital, the findings, the contact method, who was reached, the outcome and the follow-up. Continuity governance re-escalates unreachable patients on a fixed cadence, and the practice is notified at every decision point.

Value Analysis

Margin-positive from day one, before a single episode is reconciled.

Modeled on the cardiothoracic surgery service line at MGH and Brigham and Women's, using Massachusetts locality reimbursement. CoachCare funds the enrollment engine, so there is no capital at risk and no negative-margin month.

Active program enrollments by program

24-month ramp. Shows active program enrollments (a patient may carry more than one program); the headline figure above is deduped unique patients.

Monthly economics

Net reimbursement, CoachCare fees and service line margin, by month.

24-month net reimbursement mix

By program.

Financial summary

Illustrative, modeled — verify against service line data.
MeasureYear 1Year 224 months
Net reimbursement$1,525,829$2,161,937$3,687,766
CoachCare fees$898,025$1,248,218$2,146,243
Service line margin$627,804$913,719$1,541,523
Margin %41.1%42.3%41.8%

A CoachCare-funded on-site enrollment specialist is included in the model at CoachCare's expense. It is embedded value in the program, not a cost deducted from the service line's margin.

1,068

Unique patients

In active remote care at month 24, deduped across programs.

79

Hospitalizations avoided

Over 24 months — the figure that also moves the TEAM episode and the readmission measure.

124,485

Physiologic readings

Captured and trended into the record over 24 months.

~14.6

FTE equivalent

Care team hours returned — about 30,357 hours over 24 months.

Scenario Explorer

Move any assumption and the model recalculates live. It reproduces the Value Analysis workbook at the modeled settings.
24-mo net reimbursement
$3.69M
24-mo service line margin
$1.54M
Active enrollments at M24
1,617
Hospitalizations avoided
~79
Getting there

Four steps, and the first one is a conversation, not a contract.

Step one

Validate the population

Confirm the cardiothoracic surgical and heart failure denominators against your own chart counts rather than CMS claims proxies, and agree the eligible cohort for year one.

Step two

Design the pathway around the episode

Map TCM, monitoring and escalation onto the existing cardiac surgery discharge process — and specifically onto the first fourteen days, where readmission risk concentrates.

Step three

Integrate with Epic and stand up enrollment

Bi-directional integration, enrollment flags in the workflow, and a CoachCare-funded on-site enrollment specialist embedded with the service line.

Step four

Start at one campus, then extend

Prove the pathway on one cardiac surgery service, then extend the same infrastructure to the second campus and to adjacent service lines — the enrollment, device, triage and billing engine is built once and reused.

About CoachCare

The experience to get it right.

500,000+

Patients managed

Across more than 400 managed conditions.

10,000+

Providers

Committed to remote care excellence.

1,000+

Implementations

Successful in-market deployments.

5M+

Claims

Care plan coding and billing generated.

100M+

Vitals recorded

Physiologic readings captured to date.

4M+

Care actions

Clinical interventions enabled.

Transparency

Assumptions, sources and what still needs validating.

How the population was sized
  • Volumes come from the CMS Medicare Inpatient Hospitals — by Provider and Service file, data year 2024, queried by CCN for MGH (220071) and Brigham and Women's (220110).
  • Medicare fee-for-service cardiac surgical discharges: 296 CABG (MS-DRG 231–236), 520 valve and other major cardiothoracic (216–221), 349 other cardiothoracic including ECMO, VAD and transplant. Heart failure and shock (291–293) adds 807.
  • These are fee-for-service claims only. Medicare Advantage discharges do not appear in the file, so volumes were grossed up using CMS county-level Medicare Advantage penetration for the MGH/Brigham catchment (Suffolk, Middlesex, Norfolk and Essex counties, weighted — approximately 35%).
  • CMS suppresses provider-DRG cells below 11 discharges, so every volume figure above is a floor, not a ceiling.
  • Year-one eligible population in scope: 3,052. This is an estimate built from claims data and must be validated against Mass General Brigham's own chart counts in discovery.
How the financial model works
  • Reimbursement is calculated at Massachusetts Medicare Physician Fee Schedule locality rates for each CY2026 code in the stack.
  • Enrollment is modeled through three pathways — provider referral, an on-site enrollment specialist, and telephonic outreach — each with its own ramp and program mix, against per-program eligibility and conversion ceilings.
  • Census carries a 1.5% monthly attrition assumption. Programs cap at eligibility × conversion against the in-scope population.
  • Hospitalizations avoided are modeled from RPM patient-months at a published-literature-based rate, and are modeled outcomes, not a guarantee.
  • Unique patients are deduped across programs using a 70% dual-enrollment assumption. The enrollment chart and the Scenario Explorer census output show active program enrollments, which is a larger number than unique patients.
  • Every financial figure on this page is illustrative and modeled — verify against service line data.
Verified facts and their sources
  • TEAM participation — CMS TEAM Participant List (XLSX), updated June 2026, hospital data as of April 15 2026. Six MGB CCNs listed as Mandatory, 01/01/2026–12/31/2030. Verified per CCN.
  • CABG as a TEAM episode — CMS TEAM PY1 Preliminary Target Prices workbook, dated December 10 2025, which prices "IP-Coronary artery bypass graft" among five episode categories.
  • New England CABG target prices — same file, Census Division 1, MS-DRG level, 1.5% discount factor. Regional, not hospital-specific.
  • Hospital identity, type and star ratings — CMS Provider Data Catalog, Hospital General Information dataset.
  • ACO participation — CMS PY2026 Medicare Shared Savings Program files; both MGB ACOs listed in the ENHANCED track.
  • ASM — CMS Ambulatory Specialty Model Participants dataset, file CY27_Prelim_ASMParticipants_Public.csv, Heart Failure cohort only, matched by National Provider Identifier. Preliminary list — confirm against the final CMS publication.
  • Medicare Advantage penetration — CMS county-level Medicare enrollment data, 2026.
  • CABG readmission and mortality performance — CMS Care Compare Complications and Deaths and Unplanned Hospital Visits datasets, and the FY2026 Hospital Readmissions Reduction Program payment adjustment and supplemental data files, performance period July 2021–June 2024.
  • No prior bundled-payment participation — CMS BPCI-Advanced participant rosters for model years 3, 5, 6, 7 and 8, and the CJR hospital list; no Mass General Brigham entity appears in any of them, and no Massachusetts hospital appears in CJR.
  • Existing remote monitoring programs — Mass General Brigham newsroom and the Accelerator for Clinical Transformation and Remote Health program pages; enrollment figure published April 2023.
  • Post-discharge atrial fibrillation after cardiac surgery — prospective wearable-ECG study led from Brigham and Women's, reported August 2025.
  • All CMS sources retrieved July 29 2026.
What we have not verified
  • Mass General Brigham's actual all-payer cardiac surgery volumes, current cardiothoracic surgical staffing, and the true referring-provider count for the service line. The model uses 45 referring providers as an estimate and it should be replaced with your number.
  • Current enrollment in the existing Mass General Brigham remote monitoring programs. The most recent publicly available figure is from April 2023; 2026 enrollment is not publicly verifiable.
  • Whether any post-discharge cardiac surgery monitoring capability has been stood up since the August 2025 research publication. Our review found no evidence of one, but absence of public evidence is not proof of absence — this is a discovery question, not an assertion.
  • The employment and contracting relationship between Mass General Brigham and the three cardiologists on the ASM preliminary list, who bill under the Cooley Dickinson physician organization and also carry other affiliations.
  • Massachusetts' public cardiac surgery report card has not published since FY2014, so CMS Medicare discharge counts are the only current usable volume figures — and they capture fee-for-service only.
  • Current CY2026 fee schedule amounts for each billing site, which should be confirmed in contracting.
  • Nothing on this page asserts a clinical capability, a volume, a rating or a program that was not verified against a named source above.