CPT 99437: Complex Chronic Care Management Add-On — Each Additional 30 Minutes (2026).
CPT 99437 is the add-on code for each additional 30 minutes of physician or qualified healthcare professional (QHP) time spent on complex Chronic Care Management beyond the initial 30 minutes billed under 99491. Unlike 99439 (which is the add-on for standard CCM), 99437 specifically requires physician/QHP personal time — clinical staff time does not count. There is no CMS-imposed monthly cap on 99437 units, but each must be a full 30 minutes and clinically justified by the patient's complexity.
Quick Answer
What is CPT 99437?
CPT 99437 is the Medicare add-on code for each additional 30 minutes of physician or qualified healthcare professional (QHP) personal time spent on complex Chronic Care Management, billed alongside the base 99491 code. It reimburses approximately $63 per 30-minute increment under the 2026 Medicare fee schedule. Clinical staff time does not count — 99437 requires physician/QHP personal time. There is no monthly unit cap, but each unit must be fully justified by clinical complexity. Use 99439 instead for standard CCM (99490-based) add-on time.
Documentation
Documentation requirements.
Cumulative physician/QHP personal time log exceeding the initial 30-minute 99491 threshold by each additional 30-minute increment claimed
Continued clinical complexity documentation justifying physician-level involvement
Care plan revisions and clinical decisions made during the additional time
Activity descriptions for each additional 30-minute block
Confirmation that 99491 was also billed in the same month for the same patient
Scenarios
Common billing scenarios.
Complex CCM with 65 minutes of physician time
BillableA physician personally spends 65 minutes during the month managing a patient with CHF, CKD stage 4, and uncontrolled diabetes — reviewing labs, adjusting four medications, coordinating with a cardiologist and nephrologist, and calling the patient about treatment changes. Bill 99491 (first 30 minutes) + 99437 (additional 35 minutes — one 30-min increment with 5 minutes carried over).
Two 99437 units for 95-minute month
BillableA physician spends 95 minutes personally managing a patient with five interacting chronic conditions requiring extensive medication reconciliation across three specialists after a hospitalization. Bill 99491 (first 30 minutes) + 2 × 99437 (additional 60 minutes in two 30-min increments). Total complex CCM revenue: approximately $215.
Clinical staff time claimed under 99437
Not BillableAn RN care coordinator spends 30 minutes on additional care coordination beyond the base 99491 month. The RN time does not qualify for 99437 — only physician/QHP personal time counts. The 30 minutes of clinical staff time is not separately reimbursable under 99437.
Partial 30-minute increment
Not BillableA physician personally spends 50 minutes managing a patient — 30 for the base 99491 and 20 additional minutes. The additional 20 minutes do not reach the 30-minute threshold required for 99437. Bill 99491 only; the 20 additional minutes are not separately reimbursable until the full 30-minute increment is reached (60 total minutes).
FAQ
Common questions about CPT 99437.
What is CPT 99437?
CPT 99437 is the Medicare add-on billing code for each additional 30 minutes of physician or qualified healthcare professional (QHP) personal time spent on complex Chronic Care Management beyond the initial 30 minutes billed under 99491. It requires physician/QHP personal time — clinical staff time does not count. Each unit reimburses approximately $63 under the 2026 Medicare fee schedule.
How much does CPT 99437 reimburse in 2026?
CPT 99437 reimburses approximately $63 per 30-minute increment under the 2026 Medicare Physician Fee Schedule. A physician spending 60 minutes personally managing a complex patient generates approximately $86 (99491) + $63 (99437) = $149 per month. With 90 physician minutes, the math becomes $86 + 2 × $63 = $212 per month.
What is the difference between 99437 and 99439?
Both are CCM add-on codes, but for different base codes and staff types. 99437 is the add-on for complex CCM (99491, physician/QHP personal time, 30-min increments). 99439 is the add-on for standard CCM (99490, clinical staff time, 20-min increments). 99437 reimburses ~$63 per unit; 99439 reimburses ~$50 per unit. Use 99437 only when the physician personally provides the additional complex care management.
Is there a monthly cap on 99437 units?
CMS does not impose a hard cap on 99437 units per month, but each unit must be a full 30 minutes of physician/QHP personal time and clinically justified by the patient's medical complexity. Practices billing more than 2-3 units of 99437 in a single month for a patient should be prepared to document the clinical necessity of that level of physician involvement.
Can clinical staff time count toward 99437?
No. CPT 99437 specifically requires physician or QHP personal time. Clinical staff time (RN, MA, care coordinator) does not count toward the 30-minute increment requirement. If clinical staff are providing the additional care management, the appropriate code is 99439 (which is the add-on for standard CCM 99490, not complex CCM 99491).
Can 99437 be billed alongside RPM or BHI?
Yes. 99437 can be billed in the same month as RPM (99454/99457) and BHI (99484) for the same patient, provided the time and clinical activities are distinct. 99437 must specifically be physician/QHP personal time focused on complex chronic medical condition management; RPM and BHI time must remain distinct.
Related Codes
Other CPT codes.
CCM Initial 20 Minutes
$62.00 • Once per calendar month
RPM Device Supply (16+ Days)
$52.11 • Monthly (per 30-day period)
RPM Clinical Review (First 20 Min)
$51.77 • Once per calendar month
RPM Initial Setup (One-Time)
$21.71 • One-time per episode of care
RPM Clinical Review (Additional 20 Min)
$41.42 • Monthly (per calendar month, add-on to 99457)
Complex CCM Initial 30 Minutes
$86.00 • Once per calendar month
PCM Physician Base (30 Min)
$88.00 • Once per calendar month
BHI Care Management (20 Min)
$53.00 • Once per calendar month
CoCM Initial Month (70 Min)
$163.00 • Once per CoCM episode — the initial month only (subsequent months bill 99493)
CoCM Subsequent Month (60 Min)
$130.00 • Monthly, in each month after the initial 99492 month
CoCM Add-On (Each 30 Min)
$66.00 • As needed, in 30-minute increments, in the same month as 99492 or 99493
CCM Add-On (Each 20 Min)
$50.00 • Up to 2 units per calendar month, in addition to the base 99490
Sources & Compliance
CPT® notice. CPT is a registered trademark of the American Medical Association. CPT codes, descriptions, and other data only are copyright 2026 American Medical Association. All rights reserved. CPT is provided “as is” without warranty of any kind. The plain-language descriptions, billing scenarios, and FAQs on this page are CCN Health’s editorial summary and are not the official AMA long descriptors.
Reimbursement. Reimbursement figures shown are CCN Health estimates based on the CMS Medicare Physician Fee Schedule (CY 2026) using published RVU values and the 2026 conversion factor of $33.40. Final payment varies by locality (GPCI), facility status, and payer contract. Fee schedules, relative value units, and conversion factors are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use.
Sources. CMS Medicare Physician Fee Schedule, CY 2026 (cms.gov); AMA CPT 2026 Code Set (ama-assn.org).
Disclaimer. This page is informational and does not constitute billing, clinical, or legal advice. Verify all codes, modifiers, and reimbursement amounts against your contracted payer agreements and the official CMS publications before billing.