PCM vs CCM: which care management program fits your patients?
PCM and CCM are both monthly, timed Medicare care management programs. CCM serves patients with two or more chronic conditions; PCM serves one high-risk condition. The program decides which codes your time tracking counts, who may log the minutes and what else can be billed that month.
What is the difference between PCM and CCM?
Quick answer
PCM vs CCM comes down to the patient's conditions. Choose CCM when two or more chronic conditions are expected to last at least 12 months, and PCM when one complex condition drives the care plan. Agnotic Technologies builds the time tracking and care plan software that keeps each program's codes, minutes and consent rules apart.
| Criterion | PCM | CCM |
|---|---|---|
| Qualifying conditions | One complex chronic condition expected to last at least 3 months, the focus of the care plan | Two or more chronic conditions expected to last at least 12 months, or until death |
| Codes for practitioner time | 99424 first 30 minutes; 99425 each additional 30 minutes | 99491 first 30 minutes; 99437 each additional 30 minutes |
| Codes for clinical staff time | 99426 first 30 minutes; 99427 each additional 30 minutes | 99490 first 20 minutes; 99439 each additional 20 minutes |
| Complex variant | None: the single high-risk condition is the complexity | Complex CCM: 99487 first 60 minutes of staff time; 99489 each additional 30 minutes |
| Time window | Calendar month | Calendar month |
| Supervision of staff time | General supervision as a designated care management service (42 CFR 410.26(b)(5)) | General supervision as a designated care management service (42 CFR 410.26(b)(5)) |
| Care plan | Disease-specific care plan for the one condition | Comprehensive care plan across all chronic conditions |
| Consent | CCM scope of service applies, including verbal consent documented in the record | Verbal consent documented in the record before the first billed month |
| Same-month conflicts | Not billed by the same practitioner with CCM for the same patient; RPM allowed if minutes are not counted twice | Not billed by the same practitioner with PCM for the same patient |
| What time tracking must enforce | One focus condition, 30-minute thresholds, a block on CCM by the same practitioner | Condition count of two or more, 20-minute staff thresholds, a separate complex CCM path |
What they are
What is PCM
Principal Care Management is monthly care management for one complex chronic condition that is the focus of a disease-specific care plan. CMS first paid for it in the CY 2020 Physician Fee Schedule final rule, and CPT codes 99424 to 99427 were adopted for it in the CY 2022 final rule.
What is CCM
Chronic Care Management is monthly care management for a patient with two or more chronic conditions expected to last at least 12 months, coordinated through one comprehensive care plan. It is usually run by primary care, with clinical staff logging time under the billing practitioner's general supervision.
Key differences
Why do the time thresholds differ between PCM and CCM?
The CY 2026 Physician Fee Schedule final rule describes the CCM and PCM code families as five sets of codes reported monthly on a timed basis, varying by condition complexity and by whether clinical staff minutes or practitioner minutes meet the threshold. In practice CCM staff time counts in 20-minute blocks and PCM staff time in 30-minute blocks, so one shared timer with one threshold will bill the wrong code.
Who is allowed to log the minutes?
Each program has a practitioner-time pair and a clinical-staff pair. 42 CFR 410.26(b)(5) lets designated care management services be furnished under general supervision when provided incident to a practitioner's services, so staff can log time without the practitioner in the room. The software has to record who did each activity and which pair it counts toward, because a nurse's minutes never satisfy 99424 or 99491.
How does each program shape the care plan?
CCM expects one comprehensive plan that covers every chronic condition. PCM expects a disease-specific plan for the one condition that is being managed, while other conditions stay with primary care. A care plan screen built for CCM, with every problem-list entry pulled in by default, makes a PCM plan harder to read and harder to defend.
Can a patient move between PCM and CCM?
Yes, when the clinical picture changes: a second condition becomes active, or one condition starts to dominate. Treat the switch as a clinical decision recorded in the chart, and start the new program's timer at a calendar month boundary so minutes are never split across two code families in one month.
Where does APCM fit in this decision?
Practices comparing PCM and CCM now also weigh Advanced Primary Care Management, HCPCS G0556 to G0558, finalized in the CY 2025 Physician Fee Schedule final rule. Its billing rules differ from both timed programs, so check the rule text before you let your software offer it alongside PCM or CCM for the same patient.
When to use each
When to use Principal Care Management (PCM)
- A specialist manages one serious condition while primary care keeps the patient's other conditions.
- The condition is expected to last at least three months and puts the patient at risk of hospitalization or decline.
- The patient was recently hospitalized or needs frequent medication changes for that one condition.
- Your clinicians want 30-minute time blocks, either their own time or clinical staff time.
When to use Chronic Care Management (CCM)
- Primary care coordinates several long-term conditions for the same patient.
- Clinical staff do most of the monthly outreach and medication follow-up.
- Some patients need complex CCM, which starts at 60 minutes of clinical staff time in the month.
- You want one comprehensive care plan that covers every condition rather than one condition at a time.
Where does PCM and CCM time capture fail an audit?
1. Minutes on the wrong code family. A shared timer counts PCM time in 20-minute blocks or CCM time in 30-minute blocks. Fix: tie every time entry to an enrolled program and evaluate thresholds per program and per code pair.
2. Staff minutes counted as practitioner minutes. The entry records the patient but not who did the work. Fix: capture the user, their role and the activity type on every entry, and refuse practitioner-time codes from staff entries.
3. Time counted twice. Minutes for remote monitoring review are also counted toward PCM. The CY 2020 rule allows RPM with PCM by the same practitioner only if the time is not counted twice. Fix: one entry, one program.
4. Billing before consent. The first month is billed before consent is in the record. Fix: block claims until a dated consent entry exists for that program.
5. A care plan that does not match the program. A PCM patient has a comprehensive plan, or a CCM patient has a plan for one condition. Fix: make the plan type follow the enrolled program.
6. PCM and CCM from the same practitioner in the same month. Fix: check at enrolment and again at claim build, and route conflicts to a person.
7. Late entries after the claim is sent. Minutes logged after month end change the code that should have been billed. Fix: lock the month at claim build and send later entries to a review queue.
Which sources does this comparison rely on?
- 42 CFR 410.26: incident to services and general supervision (eCFR)
- CY 2020 Physician Fee Schedule final rule, 84 FR 62568: PCM introduced (govinfo)
- CY 2021 Physician Fee Schedule final rule: CPT 99439 (govinfo)
- CY 2022 Physician Fee Schedule final rule, 86 FR 64996: CPT 99424 to 99427 (govinfo)
- CY 2026 Physician Fee Schedule final rule, 90 FR 49266 (govinfo)