Updated for 2026

Chronic Care Management CPT Codes

Chronic Care Management is billed through a small family of related codes, each covering a different amount or type of qualifying time. Here's how they relate to each other, summarized from CMS guidance — not the proprietary CPT code book.

How These Codes Relate

CMS groups CCM billing into two tracks: non-complex CCM, billed by time thresholds for clinical staff or for the billing practitioner personally, and complex CCM, which additionally requires moderate- to high-complexity medical decision-making. A patient is billed under one track or the other for a given month, never both.

Code Overview

Code	General Purpose	Relationship to Other Codes	Time Concept
99490	Base non-complex CCM, clinical staff time	The base code most CCM billing starts from	First 20 minutes/month
99439	Additional non-complex CCM, clinical staff time	Add-on to 99490 only — never billed alone	Each additional 20 minutes/month
99491	Non-complex CCM personally performed by the billing practitioner	Alternative to 99490 when the practitioner (not clinical staff) does the qualifying work	First 30 minutes/month, personal time only
99437	Additional personally-performed non-complex CCM time	Add-on to 99491 only	Each additional 30 minutes/month, personal time only
99487	Complex CCM, clinical staff time	Requires moderate/high-complexity medical decision-making; mutually exclusive with 99490/99439 for the same patient/month	First 60 minutes/month
99489	Additional complex CCM time	Add-on to 99487 only	Each additional 30 minutes/month
G0506	Extensive assessment and care planning by the billing practitioner	Billed once, as part of an initiating visit — not a monthly CCM code	N/A (one-time)

Non-Complex vs Complex CCM

Non-complex CCM (99490/99439, or 99491/99437 for personally-performed time) is the standard monthly track for most enrolled patients. Complex CCM (99487/99489) applies only when the patient's care that month genuinely requires 60+ minutes of clinical staff time and moderate- to high-complexity medical decision-making by the billing practitioner. See our CPT 99490 Reimbursement Guide for the base code in detail.

Clinical Staff vs Personally-Furnished Codes

99490/99439 and 99487/99489 describe clinical staff time performed under the billing practitioner's general supervision. 99491/99437 count only time the billing practitioner personally spends — clinical staff time never counts toward that pair's threshold.

Related Program Codes

Advanced Primary Care Management (G0556/G0557/G0558) bundles CCM-like activity into a flat monthly payment instead of separate time-based codes — see our APCM vs CCM comparison. Principal Care Management (99424-99427) and Transitional Care Management (99495/99496) are separate, related programs outside the scope of this page.

Frequently Asked Questions

99490 (clinical staff) or 99491 (personally performed by the billing practitioner) is the base code most enrolled patients are billed under each month, depending on who performs the qualifying work.

The codes describe different performers of the qualifying time (clinical staff vs. the billing practitioner personally) for the same underlying non-complex CCM service — confirm current same-month combination rules with your coding advisor or Medicare Administrative Contractor before billing both.

No. This page summarizes each code's general purpose and relationship in original language for education. The exact CPT code descriptors are proprietary to the American Medical Association — see the Official Resources below for CMS's own guidance.

Official Resources

CMS — Chronic Care Management Services (MLN Booklet, MLN909188) — published June 2025
CMS Physician Fee Schedule Look-Up Tool

Medicare rules and reimbursement may change. This page was last reviewed on September 30, 2026.

This tool and page are provided for educational and planning purposes only and do not constitute legal, coding, billing, financial, or medical advice. Medicare and payer requirements can change. Practices should verify current requirements and reimbursement with CMS, their Medicare Administrative Contractor, payer, coding advisor, or compliance professional.

Related Resources

CPT 99490 Reimbursement Guide 99490 vs 99439 Estimate Your CCM Revenue

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