Chronic Care Management explained: eligibility, CCM and PCM CPT codes, 2026 rates, and the billing mistakes that most often cause denials.
Chronic Care Management is one of the most widely available Medicare programs a practice can bill - and one of the most commonly billed incorrectly. Most guides define CCM, list a code or two, and stop there. What determines whether a CCM claim gets paid is what most articles skip: the exact eligibility threshold, which code applies to which patient population, and how Principal Care Management fits alongside it for patients who don't meet CCM's bar. This guide covers Chronic Care Management the way a billing team actually needs it - codes, eligibility, and the mistakes that turn a legitimate program into a denial.
What Is Chronic Care Management?
Chronic Care Management (CCM) is a Medicare Part B program that pays a practice for non-face-to-face time spent coordinating care for a patient between office visits - phone calls, medication review, care plan updates, and coordination with specialists. Per Medicare's own coverage page for Chronic Care Management Services, a patient must have two or more chronic conditions expected to last at least 12 months (or until the patient's death), and the practice must maintain a comprehensive, patient-centered electronic care plan, obtain the patient's consent, and ensure 24/7 access to care for urgent needs.
CCM isn't a replacement for office visits - it's paid specifically for the coordination work that happens in between them, which is exactly the work that historically went undocumented and unbilled.
Chronic Care Management CPT Codes
The distinction between 99490 and 99491 trips up more practices than any other part of CCM billing: 99490 covers clinical staff time under general supervision, while 99491 specifically requires the billing physician or qualified healthcare professional to personally provide the time - a nurse or care coordinator's time doesn't count toward 99491, no matter how well-documented it is.
Principal Care Management CPT Codes: How PCM Differs
Principal Care Management (PCM) is often confused with CCM, but the eligibility threshold is the opposite: PCM is built for a patient with one single, serious chronic condition - advanced heart failure, stage 4 CKD, or severe COPD, for example - rather than two or more.
A patient can't be enrolled in CCM and PCM for the same condition at the same time by the same practice - but a patient with two or more chronic conditions overall, one of which is dominant and high-acuity, may be a candidate for one program or the other depending on which billing structure and clinical focus actually fits their situation, which is a decision worth revisiting periodically rather than locking in permanently at enrollment.
Eligibility and Consent Requirements
Before billing any CCM or PCM code, a few requirements apply regardless of which specific code is used, per CMS's own Chronic Care Management Services guide:
- Only one practitioner can bill CCM (or PCM) for a given patient in a given calendar month
- Patient consent is required - verbal or written - and must be documented, including that the patient understands cost-sharing may apply
- A comprehensive electronic care plan must exist and be accessible to the care team and, upon request, to the patient
- 24/7 access to care for urgent chronic care needs must be available, even outside regular office hours
The patients who qualify under these rules typically overlap heavily with the costs of chronic disease emotional economic burden the clinical, emotional, and economic burden of chronic disease that CCM was designed to address in the first place.
What Changed for CCM Billing Recently
The bundled FQHC/RHC code G0511 - previously used by federally qualified health centres and rural health clinics to bill CCM and PCM under a single code - was sunset effective October 1, 2025. Those clinics now bill the individual CPT codes listed above at standard non-facility rates, like any other practice, rather than a single blended rate.
FQHCs and RHCs should update their billing workflows to use the appropriate individual CCM or PCM CPT codes. Accurate code selection, time tracking, and documentation are now especially important after the G0511 sunset. Practices should also review their billing systems to ensure claims submitted after October 1, 2025, no longer use G0511.
Common CCM and PCM Billing Mistakes to Avoid
- Billing 99491 for staff-provided time - that code requires the physician or QHP's own personal time, not delegated clinical staff work
- Enrolling a patient in both CCM and PCM for the same condition with the same practice in the same month
- Missing documented patient consent, including the cost-sharing disclosure, before the first billed month
- Letting the care plan go stale - a care plan that isn't updated to reflect the patient's current status is a common audit finding
- Continuing to bill G0511 at FQHCs and RHCs after its October 2025 sunset instead of the individual CPT codes
Practices should build documentation habits around these requirements before the first claim goes out - our guide on how to prepare for a CMS CCM audit covers what auditors specifically look for once a program is already running. Practices building this kind of longitudinal relationship should also review our CPT Code G2211 Billing Reimbursement Rates guide, since that add-on code recognizes the same ongoing-complexity relationship CCM and PCM are both built around.
Where Circle Health Fits: Running CCM and PCM as a Managed Service
Circle Health runs Chronic Care Management and Principal Care Management directly, as fully managed programs - this is core to what the platform does, not an adjacent service. Circle Health's AI-powered platform identifies eligible patients for CCM versus PCM based on their actual condition profile, builds and maintains the required care plans, documents every interaction to the standard CMS audit reviews expect, and handles monthly billing - all without a practice adding staff or absorbing upfront cost. For practices weighing CCM against a broader Advanced Primary Care Management structure for lower-acuity patients, our Advanced Primary Care Management in Medical Practice guide covers how that bundled alternative compares. Our overview of CCM software chronic care management automated eligibility identification, time tracking, and documentation - covers the same operational discipline Circle Health's platform is built around.
Conclusion
Chronic Care Management is a genuinely valuable Medicare program, but it only pays reliably when the eligibility threshold, the code selection, and the ongoing documentation requirements are handled correctly from the first month forward - not retrofitted after a denial. Getting the CCM-versus-PCM distinction right based on actual patient acuity, and building consent and care-plan documentation into the workflow from day one, is what separates a compliant, revenue-positive program from one that generates denials and audit exposure.
CMS reviews CCM and PCM billing rules, rates, and eligibility criteria annually, so treat this guide as a starting reference rather than the final word. Always verify current codes and requirements against the latest CMS and Medicare.gov publications, and loop in your billing team or a certified coder before enrolling a patient panel into either program.
Frequently Asked Questions
What Are the CPT Codes for Chronic Care Management?
The core CCM codes are 99490 for 20+ minutes of clinical staff time and 99439 for each additional 20 minutes. 99491 covers 30+ minutes personally provided by a physician or QHP, while 99487/99489 apply to complex CCM requiring moderate-to-high complexity decision-making.
What Is the Difference Between CCM and Principal Care Management?
CCM requires two or more chronic conditions expected to last at least 12 months. PCM focuses on one serious chronic condition and uses a separate code set, 99424–99427.
How Many Chronic Conditions Are Required to Bill CCM?
A patient must have at least two chronic conditions expected to last at least 12 months or until the patient's death. If only one qualifying condition is present, the patient may instead qualify for Principal Care Management.
Can CCM and PCM Be Billed for the Same Patient in the Same Month?
CCM and PCM cannot be billed for the same condition by the same practice during the same month. A patient may qualify for either programme depending on their clinical needs, but overlapping care cannot be billed under both programmes.
What Happened to CPT Code G0511?
G0511 was sunset effective October 1, 2025. The bundled CCM/PCM code was previously used by FQHCs and RHCs. These clinics now bill the individual CPT codes at standard non-facility rates.
How Can Circle Health Help?
Circle Health runs CCM and PCM as fully managed programmes, helping practices identify eligible patients, create compliant care plans, document interactions, and manage monthly billing. This allows practices to offer both programmes without adding staff or upfront costs.