Updated for 2026. CPT 99437 is the add-on code used when a physician or other qualified healthcare professional personally provides additional Chronic Care Management (CCM) time beyond the initial practitioner CCM service represented by CPT 99491.
The core rule is straightforward: CPT 99437 represents each additional 30 minutes of qualifying practitioner-performed CCM during a calendar month.
It cannot be used as a stand-alone CCM code. The record must first support the applicable base practitioner CCM service.
What Is CPT 99437?
CMS identifies CPT 99437 as an add-on Chronic Care Management code for each additional 30 minutes of qualifying services personally provided by a physician or other qualified healthcare professional.
It is associated with CPT 99491, which represents the first 30 minutes of practitioner-performed CCM during a calendar month.
CPT 99491 vs CPT 99437
CodeServiceWho Performs ItTime99491Base practitioner CCMPhysician or other qualified healthcare professional personallyFirst 30 minutes99437Additional practitioner CCMPhysician or other qualified healthcare professional personallyEach additional 30 minutes
Both codes are based on time personally spent by the billing practitioner.
Clinical Staff Time Does Not Count Toward CPT 99437
CMS states that CPT 99491 and 99437 include only time personally spent by the billing practitioner.
Clinical-staff time cannot be added to practitioner time to meet the required reporting threshold for these codes.
Example
A physician personally performs 42 minutes of qualifying CCM activity, while an RN provides another 25 minutes of chronic-care work during the same month.
The RN's 25 minutes cannot simply be added to the physician's 42 minutes to create a practitioner CCM total for CPT 99437.
The practice must apply the current CCM billing rules to the services actually furnished and should keep practitioner and clinical-staff time clearly separated.
Who Can Personally Furnish CPT 99437?
CPT 99437 is tied to practitioner-performed CCM. Depending on Medicare enrollment, scope of practice, and applicable billing requirements, eligible practitioners can include physicians and certain qualified non-physician practitioners.
CMS CCM materials identify eligible billing practitioners including:
- Physicians
- Nurse practitioners
- Physician assistants
- Clinical nurse specialists
- Certified nurse-midwives
The practitioner must personally perform the qualifying time used to support CPT 99491 and 99437.
What Activities May Count Toward Practitioner CCM Time?
Qualifying practitioner work should relate directly to ongoing management of the patient's multiple chronic conditions and comprehensive care plan.
Activities may include:
- Reviewing changes in chronic-condition status
- Medication management
- Reviewing treatment response
- Updating the comprehensive care plan
- Communicating directly with the patient or caregiver
- Coordinating care with specialists
- Reviewing hospital or emergency-department information
- Addressing clinically significant barriers to treatment
- Reviewing relevant test or monitoring information
- Managing changes requiring practitioner-level clinical decisions
The activity should represent actual qualifying CCM work rather than unrelated administrative or clerical activity.
Patient Eligibility Does Not Change for CPT 99437
CPT 99437 is still part of Medicare Chronic Care Management.
The patient generally must have two or more chronic conditions that are expected to last at least 12 months, or until the patient's death, and that place the patient at significant risk of death, acute exacerbation or decompensation, or functional decline.
The practice must also satisfy other applicable CCM requirements such as consent, care planning, access, continuity, and documentation.
Example of Practitioner CCM Throughout a Month
DatePractitioner ActivityTimeOct 3Reviewed changes in diabetes and hypertension management and updated care plan14 minOct 11Medication-management discussion with patient and review of treatment response16 minOct 19Reviewed specialist recommendations and coordinated plan changes17 minOct 27Patient follow-up and chronic-condition management review16 minTotal practitioner CCM time63 min
The billing team would compare the documented practitioner time and activities with current CPT and Medicare requirements to determine whether CPT 99491 and an applicable unit of CPT 99437 are supported.
Do Not Bill CPT 99437 Alone
CPT 99437 is an add-on code.
It should not be reported independently simply because a practitioner documented 30 minutes of chronic-care work.
The applicable base service, CPT 99491, must first be supported along with all other applicable CCM requirements.
Do Not Automatically Round Up Additional Time
Practices should record actual qualifying practitioner time and apply the current CPT time-reporting rules when determining whether an additional unit is supported.
A billing workflow should not automatically convert an incomplete additional time period into CPT 99437 merely because the patient has already met the base CCM requirement.
Can Multiple Units of CPT 99437 Be Reported?
CPT 99437 represents additional practitioner-performed CCM time. Whether multiple units are reportable depends on the documented qualifying time and current CPT, Medicare, medically unlikely edit, and payer instructions.
Practices should verify current coding guidance before reporting multiple add-on units.
Can CPT 99437 Be Billed With CPT 99490?
No for the same patient in the same calendar month under CMS's CCM concurrent-billing guidance.
CMS states that CPT 99491 and 99437 should not be reported in the same calendar month as the clinical-staff CCM codes 99487, 99489, 99490, or 99439.
The practice should determine which CCM pathway is supported by the services actually furnished.
Can CPT 99437 Be Billed With CPT 99487?
No. CPT 99487 is the base Complex Chronic Care Management code and belongs to a different CCM pathway.
CMS states that non-complex and complex CCM should not be reported for the same patient during the same calendar month.
CPT 99437 vs CPT 99439
These are both CCM add-on codes, but they represent different staffing models and time increments.
Feature9943799439Base code9949199490Who performs servicePhysician/QHP personallyClinical staff under practitioner directionAdditional timeEach additional 30 minutesEach additional 20 minutesClinical staff time counts?NoYes
This distinction is why practices should identify who performed each activity rather than maintaining only one combined monthly CCM total.
CPT 99437 vs CPT 99489
CPT 99489 also represents additional 30-minute periods, but it belongs to Complex Chronic Care Management.
CodePathwayWho Performs the Time99437Practitioner-performed standard CCMPhysician or QHP personally99489Complex CCMQualifying clinical staff/practitioner time under the complex CCM framework
Complex CCM also requires moderate- or high-complexity medical decision-making, while that requirement is not what defines the 99491/99437 practitioner CCM pathway.
Comprehensive Care Plan Requirements
CPT 99437 does not remove the underlying CCM care-plan requirements.
A comprehensive patient-centered care plan may include:
- Chronic-condition problem list
- Expected outcomes and prognosis
- Measurable treatment goals
- Medication management
- Symptom-management strategy
- Planned interventions
- Cognitive and functional needs
- Psychosocial and environmental factors
- Caregiver needs
- Coordination with outside practitioners and resources
- Periodic review and revision
Patient Consent Still Applies
The patient should provide informed consent before CCM begins.
CMS allows either verbal or written consent when properly documented.
The patient should be informed about the availability of CCM, possible cost sharing, the one-practitioner-per-month CCM limitation, and the right to stop CCM services.
Initiating Visit Requirements
CMS requires an initiating visit before CCM begins for new patients or patients who have not been seen by the billing practitioner within the previous year.
This requirement applies regardless of whether the practice ultimately uses a clinical-staff CCM pathway or practitioner-performed CCM.
Sample CPT 99437 Documentation
Example: Physician personally spent qualifying CCM time managing patient with diabetes, hypertension, heart failure, and chronic kidney disease. Reviewed home monitoring trends, medication adherence and nephrology recommendations; discussed worsening edema with patient; revised comprehensive care plan; coordinated medication-management issue with cardiologist; and established follow-up plan. Practitioner CCM time was recorded throughout the calendar month and reviewed for applicable 99491/99437 reporting.
This type of documentation is stronger than an entry that states only: 99437 completed.
Document Who Performed Each Activity
For practitioner-only CCM codes, staff identity is essential.
A useful time entry should include:
- Date
- Practitioner name
- Qualifying duration
- Chronic conditions addressed
- Activity performed
- Relevant outcome
- Care-plan update or next action
This helps the billing team separate practitioner CCM from work performed by nurses, medical assistants, care managers, or other clinical staff.
Can CPT 99437 Be Used During a TCM Period?
CMS permits certain CCM services during the 30-day Transitional Care Management service period when the requirements for each service are met.
However, practices cannot count the same time toward more than one billed service.
Because concurrent-service rules can be code specific, billing teams should verify current CPT and Medicare instructions for the exact combination being reported.
Can RPM and Practitioner CCM Be Provided to the Same Patient?
CMS allows either qualifying Remote Physiologic Monitoring or Remote Therapeutic Monitoring to be furnished concurrently with CCM when each service independently meets its requirements.
The same time should not be counted toward multiple billed services.
For example, practitioner time already attributed to an RPM treatment-management code should not automatically also be counted as 99491 or 99437 time.
Common CPT 99437 Billing Mistakes
1. Counting Clinical Staff Time
Only time personally spent by the billing practitioner counts toward CPT 99491 and 99437.
2. Billing 99437 Without 99491
99437 is an add-on code and does not stand alone.
3. Using a Combined Staff Time Total
A monthly total combining physician, nurse, and care-manager minutes can make it impossible to determine whether practitioner-only CCM requirements are met.
4. Mixing Practitioner and Clinical-Staff CCM Code Families
CMS does not allow 99491/99437 to be reported in the same calendar month as 99490/99439 or 99487/99489 for the same patient.
5. Counting Time Used for Another Service
CMS states that time counted toward a CCM service code cannot also be counted toward another billed code.
6. Documenting Time Without the Service
A numeric time total is not a substitute for documenting what qualifying chronic-care work the practitioner actually performed.
CPT 99437 Pre-Billing Checklist
- Patient has two or more qualifying chronic conditions.
- Expected duration and clinical risk are supported.
- Required consent is documented.
- Initiating visit was completed when required.
- Comprehensive care plan is available.
- The physician or qualified healthcare professional personally performed the qualifying CCM work.
- Practitioner time is tracked separately from clinical-staff time.
- The base CPT 99491 service is supported.
- Additional qualifying practitioner time supports evaluation of CPT 99437.
- The actual care-management activities are documented.
- Time is not duplicated across other services.
- 99490, 99439, 99487, and 99489 are not improperly reported in the same calendar month.
- Current CPT, CMS, MAC, and payer guidance has been reviewed.
How ChronicSync Can Help
Practitioner-based CCM requires clear separation between physician or QHP work and clinical-staff activity.
ChronicSync helps practices organize longitudinal care-management workflows, maintain structured patient documentation, track care-management activities, and improve visibility into who performed each service during the month.
A structured workflow can help billing teams review whether practitioner activity supports CPT 99491 alone or whether additional documented time may support CPT 99437.
Start your ChronicSync Free Pilot and explore a more organized approach to Chronic Care Management.
Frequently Asked Questions
What is CPT 99437?
CPT 99437 is an add-on Chronic Care Management code representing each additional 30 minutes of qualifying CCM personally provided by a physician or other qualified healthcare professional.
What is the base code for CPT 99437?
CPT 99491 is the base practitioner-performed CCM code and represents the first 30 minutes during a calendar month.
Can a nurse's time count toward CPT 99437?
No. CMS states that CPT 99491 and 99437 include only time personally spent by the billing practitioner.
Can CPT 99437 be billed by itself?
No. It is an add-on code associated with the base practitioner CCM service.
Can CPT 99437 and 99439 be billed in the same month?
CMS states that 99491 and 99437 should not be reported in the same calendar month as 99490, 99439, 99487, or 99489 for the same patient.
What is the difference between 99437 and 99439?
99437 represents additional 30-minute periods of practitioner-performed CCM, while 99439 represents additional 20-minute periods of clinical-staff CCM.
Does CPT 99437 require Complex CCM?
No. CPT 99437 belongs to the practitioner-performed standard CCM pathway with CPT 99491. Complex CCM uses CPT 99487 and 99489.
Sources
- CMS Medicare Learning Network: Chronic Care Management Services
- CMS: Chronic Care Management for Complex Conditions
This article is provided for educational purposes only and does not constitute medical, legal, coding, reimbursement, or billing advice. CPT, Medicare, MAC, and payer requirements can change. Verify current coding guidance before submitting claims.