CPT Code 99424 Explained: Principal Care Management Billing for 2026

Physicians spend significant time managing patients with complex chronic conditions time that often goes uncompensated. CPT code 99424 was created to fix that.

It gives physicians and qualified healthcare professionals a direct Medicare billing pathway for Principal Care Management (PCM) services. If your practice manages high-risk patients with a single dominant chronic condition, this code could be a meaningful revenue opportunity in 2026.

What Is CPT Code 99424?

CPT code 99424 covers the first 30 minutes of Principal Care Management services personally performed by a physician or qualified healthcare professional (QHP) per calendar month.

It replaced the earlier HCPCS code G2064 under the 2022 Medicare Physician Fee Schedule final rule and remains the primary PCM billing code today.

PCM itself was introduced by CMS in 2020 to address a gap in chronic care billing for patients with one high-complexity condition who do not meet the two-condition requirement for Chronic Care Management (CCM).

Who Can Bill CPT 99424?

CPT 99424 is reserved for provider-performed time only. The following professionals are eligible to bill this code:

• Physicians (MD/DO)
• Nurse Practitioners (NPs)
• Physician Assistants (PAs)
• Certified Nurse Midwives (CNMs)
• Clinical Nurse Specialists (CNS)

If care coordination is performed by clinical staff under physician supervision, use CPT 99426 instead of 99424.

The Full PCM Code Set: 99424–99427

PCM billing is built on four CPT codes across two tiers one for provider time and one for clinical staff time.

Physician / QHP Codes:

These codes are used when the physician or qualified healthcare professional personally performs the PCM services. Billing is based on the total time spent each month on patient care management activities, including treatment planning, medication management, and patient communication. 

Clinical Staff Codes:

These codes apply when clinical staff members provide PCM services under the supervision of a physician or qualified healthcare professional. They support practices that use nurses, care coordinators, or other trained staff to manage ongoing patient care and follow-up activities. 

The 2026 Physician Fee Schedule finalized an 8–10% reimbursement increase across all four PCM codes. Verify exact rates for your location using the CMS Physician Fee Schedule lookup tool.

Key Rule: CPT 99424 and 99426 are mutually exclusive. Bill only one per patient per month, based on who primarily delivered the service.

Patient Eligibility: Who Qualifies for PCM?

Not every Medicare patient qualifies. To enroll a patient under CPT 99424, all of the following must apply:

• Has one complex chronic condition expected to last at least 3 months or until the end of life
• Faces a significant risk of hospitalization, acute exacerbation, functional decline, or death
• Requires development, monitoring, or revision of a disease-specific care plan
• Needs frequent medication adjustments or has unusually complex management due to comorbidities

For a deeper look at how PCM works within Medicare's chronic care framework, the Circle Care PCM guide is a helpful resource for clinical teams.

PCM vs. CCM: What Is the Difference?

PCM and CCM serve different patient populations and cannot be billed together for the same patient in the same month.

The shorter 3-month condition requirement makes PCM a stronger fit for specialty practices managing patients with a single dominant condition, such as cardiologists treating heart failure or pulmonologists managing severe COPD.

Documentation and Billing Requirements

Compliant billing starts well before the first claim is submitted. Here is what is required at each stage:

Before the First Billing Month:

• Obtain a written or verbal patient consent document in the medical record, including cost-sharing acknowledgment
• Complete an initiating face-to-face E/M visit within the preceding 12 months
• Establish a disease-specific care plan focused solely on the qualifying condition
• Renew the initiating visit and consent annually to continue the program

Every Billing Month:

• Document the date, staff member, activity performed, and duration for each PCM encounter
• Confirm that at least 30 minutes of qualifying provider time is reached before billing
• Ensure all care activities remain focused on the single qualifying condition

The CMS Chronic Care Management Services guidance document provides the complete requirements for PCM codes.

Can PCM Be Billed With Other Programs?

Yes, PCM can be stacked with certain programs when requirements are met independently.

• PCM + RPM (Remote Patient Monitoring): Allowed when time and documentation are tracked separately. Combined monthly revenue potential is approximately $150–$250+ per patient.
• PCM + BHI (Behavioral Health Integration): Permitted when services are distinct and separately documented.
• PCM + CCM: Not allowed for the same patient in the same month from the same provider.

2026 Key Updates

A few important changes took effect for PCM billing in 2026:

• RHCs and FQHCs can now bill individual PCM codes (99424–99427) directly at national non-facility PFS rates, replacing the bundled approach
• G0511 was retired on September 30, 2025. Facilities still using this code must transition immediately
• Reimbursement increased 8–10% across all PCM codes in the 2026 Physician Fee Schedule Final Rule
• No structural changes to eligibility criteria or documentation requirements

Common Billing Mistakes to Avoid

These errors are among the most frequent triggers for claim denials and audits:

• Including clinical staff time in a 99424 claim (only provider time counts)
• Billing 99424 and 99426 for the same patient in the same month
• Documenting multiple conditions in a PCM care plan (use CCM codes instead)
• Submitting a claim when the monthly provider time falls below 30 minutes
• Missing or incomplete patient consent documentation
• Skipping the annual initiating visit renewal

Conclusion

CPT code 99424 remains one of the most underutilized billing codes for practices managing Medicare patients with a single dominant chronic condition. With reimbursement up in 2026 and expanded access for RHCs and FQHCs, it is worth reviewing your eligible patient panel to ensure every qualifying patient is properly enrolled in PCM.

Frequently Asked Questions

Q1. What is the difference between CPT 99424 and CPT 99426?

CPT 99424 is billed when a physician or QHP personally performs the PCM service (~$88/month). CPT 99426 is billed when clinical staff perform the service under physician supervision (~$68/month). The code you use depends entirely on who delivered the care that month; never bill both for the same patient in the same month.

Q2. Can a specialist bill CPT 99424, or is it only for primary care providers?

Any qualified billing practitioner can bill CPT 99424, including specialists. A cardiologist managing advanced heart failure or a pulmonologist overseeing severe COPD can both bill PCM. This is one key difference from Advanced Primary Care Management (APCM), which is limited to primary care settings.

Q3. Is the 3-month condition requirement a strict rule?

Yes, it is a hard requirement. The qualifying chronic condition must be expected to last at least 3 months. Acute or short-term conditions that resolve earlier do not qualify. That said, the 3-month threshold is notably shorter than CCM's 12-month requirement, making PCM available for conditions with intense but potentially shorter management periods.

Q4. Can CPT 99424 be billed in the same month as CCM codes?

No. PCM and CCM are mutually exclusive for the same patient in the same calendar month. However, there is an exception that a patient can receive PCM from one provider for one condition and CCM from a different provider managing a separate condition. Each provider bills independently.

Q5. What if the provider logs less than 30 minutes in a given month?

The claim cannot be submitted. CPT 99424 requires a minimum of 30 minutes of non-face-to-face care personally delivered by a physician or QHP within the calendar month. If that threshold is not reached, the code is not billable for that month no partial billing is permitted.

Q6. How do RHCs and FQHCs bill PCM in 2026?

Starting January 2026, Rural Health Clinics and Federally Qualified Health Centers bill PCM using individual CPT codes (99424–99427) at the national non-facility PFS payment rates. The previously bundled code G0511 was permanently retired on September 30, 2025. Facilities still using G0511 must transition to individual codes immediately.