CPT 99439: Chronic Care Management, Each Additional 20 Minutes
CPT 99439 is an add-on for each additional 20 minutes of clinical staff time in non-complex chronic care management (CCM), reported with 99490 per calendar month. In 2026 Medicare pays about $50.44 non-facility (1.51 total RVUs times the $33.4009 conversion factor) and about $30.73 in a facility.
- Code type
- CCM add-on (staff, each +20 min)
- 2026 non-facility
- $50.44 (1.51 RVUs)
- 2026 facility
- $30.73 (0.92 RVUs)
- Reported with
- 99490 (base CCM)
What is CPT 99439 used for?
CPT 99439 is the add-on for additional non-complex CCM staff time. Once you have billed the first 20 minutes with 99490, each further full 20-minute block of clinical staff time in the same calendar month is reported with 99439. It lets high-touch patients generate revenue that matches the actual coordination effort.
Like the base code, 99439 requires an eligible patient with two or more chronic conditions expected to last at least 12 months, a comprehensive care plan in a certified EHR, patient consent, and 24/7 access to care. The add-on does not stand alone; it is only valid appended to 99490 for time beyond the first 20 minutes, and it is bounded by both a monthly unit cap and a medical-necessity requirement for the coordination performed.
How much does 99439 pay in 2026?
99439 carries 1.51 non-facility RVUs and 0.92 facility RVUs. At the 2026 conversion factor of $33.4009 that is about $50.44 non-facility and $30.73 in a facility per unit. Because CCM is staff-time work billed under general supervision, the recurring monthly revenue can be meaningful across a panel. Model the stacked monthly total with the Medicare fee calculator.
How does 99439 stack on the CCM base?
Medicare allows up to two units of 99439 per patient per calendar month with 99490, capturing up to 60 total minutes of non-complex CCM staff time:
| Staff time in month | Codes | 2026 non-facility total |
|---|---|---|
| 20 min | 99490 | ~$66.13 |
| 40 min | 99490 + 99439 | ~$116.57 |
| 60 min | 99490 + 99439 x2 | ~$167.01 |
Frequently asked questions
99439 is an add-on reported only with base code 99490 for each additional full 20 minutes of clinical staff CCM time in a calendar month beyond the first 20. Medicare allows it up to two units per month, capturing up to 60 total minutes of non-complex CCM staff time (99490 plus two 99439 units).
The 2026 national non-facility allowed amount is about $50.44 (1.51 total RVUs times $33.4009) and about $30.73 in a facility per 20-minute unit. Combined with 99490, a full 60-minute non-complex CCM month can reach roughly $167 non-facility.
If the patient requires moderate- to high-complexity medical decision making and substantial care-plan revision, complex CCM codes 99487 and 99489 may pay more and better reflect the work. Do not report 99439 in the same month as the complex CCM codes; choose the pathway that matches the documented complexity.
Sources & further reading
Reviewed by the ImmediCare Solutions RCM team
Certified billers and coders handling claims across 50+ specialties nationwide. This entry is reviewed against current payer policy and CMS rules. Last review: Jul 5, 2026.
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