CPT Code 99439: Chronic Care Management, Additional 20 Minutes
CCM, each additional 20 minutes
CPT 99439 is the add-on code for each additional 20 minutes of clinical staff time for chronic care management beyond the first 20 minutes in a calendar month.
What this code covers
Reported with 99490 as the primary code.
Each unit requires a full additional 20 minutes of documented qualifying time.
Medicare limits the number of units that may be reported per month.
Billing and documentation notes
- Add-on code: requires 99490
- Each unit requires a complete additional 20 minutes
- Subject to monthly unit limits under Medicare
Related codes
CPT is a registered trademark of the American Medical Association. This page provides a general summary for educational purposes and is not a substitute for the official CPT code set, payer policy or professional coding judgment. Verify against current official descriptors and applicable payer policy before billing.
FAQ
CPT 99439, frequently asked questions questions
- What is CPT code 99439?
- CPT 99439 is the add-on code for each additional 20 minutes of clinical staff time for chronic care management beyond the first 20 minutes in a calendar month.
- What are the billing requirements for CPT 99439?
- Add-on code: requires 99490 Each unit requires a complete additional 20 minutes Subject to monthly unit limits under Medicare
- Does Healthcare SBC handle billing for 99439?
- Yes. Our certified coders bill 99439 routinely as part of full-service revenue cycle management, including documentation review, correct unit calculation where applicable, modifier application and denial management specific to this code.
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