CPT code 99439: Chronic care management, clinical staff, each additional 20 minutes2026 Medicare rate & RVUs in Louisiana
Report this add-on for each additional 20 minutes of clinical staff chronic care management in a calendar month beyond the initial time reported with 99490.
Medicare pays $47.45–$49.16 for 99439 in the office in Louisiana, from Rest of Louisiana to New Orleans, LA. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What 99439 covers
This service captures additional clinical staff time spent on chronic care management (CCM) for a patient with at least two chronic conditions expected to last at least 12 months or until death and posing a significant risk of death, acute exacerbation, or functional decline. Nurses, medical assistants, and care coordinators working under a physician or other qualified health care professional may perform the work. Activities include phone outreach, medication follow-up, coordination with pharmacies, specialists, and home health, and monitoring a comprehensive care plan. Primary care and internal medicine offices commonly furnish these services.
Report 99439 with 99490 when at least 40 minutes of qualifying time is documented for the calendar month: the initial 20 minutes for 99490 and a full additional 20 minutes for 99439. Medicare permits up to two units of 99439 per month. As an add-on, 99439 is billed with its primary service and paid within that service’s global period. Documentation should support patient consent, the care plan, qualifying activities, and cumulative time. Do not report it with complex CCM codes 99487 or 99489 for the same patient in the same month.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where 99439 pays more and less in Louisiana
| Payment locality | Office | Facility |
|---|---|---|
| New Orleans, LA | $49.16 | $30.62 |
| Rest of Louisiana | $47.45 | $30.01 |
How the 99439 rate is calculated
Each of 99439’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 99439
RVUs × geographic indexes × conversion factor
Work0.70
0.70 RVUs× 1.000 GPCI
Practice expense0.76
0.76 RVUs× 1.000 GPCI
Malpractice0.05
0.05 RVUs× 1.000 GPCI
Adjusted RVUs
1.5100
Conversion factor
$33.4009
Medicare rate
$50.44
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 99439
The CMS indicators that decide how 99439 is paid alongside other services.
CMS payment indicators · 99439
Chronic care management, clinical staff, each additional 20 minutes
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
99439 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 99437Chronic care managementAdditional physician time
- 99437 adds 30 minutes of CCM personally furnished by a physician or QHP to 99491; 99439 adds 20 minutes to the clinical staff CCM service reported with 99490.
- 99489Complex chronic care managementEach additional 30 minutes
- 99489 adds 30 minutes to complex CCM, which requires moderate or high complexity medical decision making. Code 99439 adds 20 minutes to the CCM service reported with 99490.
- 99427Principal care managementAdditional clinical staff time
- 99427 adds clinical staff time to principal care management under 99426 for one serious chronic condition; 99439 adds time to CCM under 99490 for two or more chronic conditions.
- 99458RPM management add-onEach additional 20 minutes per month
- 99458 adds 20 minutes of remote physiologic monitoring treatment management, including interactive communication. Code 99439 adds 20 minutes of CCM; time counted for one cannot be counted for the other.
99439 billing questions
How much total time is needed before 99439 can be billed?
At least 40 minutes of qualifying CCM time in the calendar month supports 99490 and one unit of 99439; at least 60 minutes supports 99490 and two units.
How many units of 99439 does Medicare allow per month?
Medicare permits up to two units per calendar month, each representing a full additional 20 minutes beyond the initial time reported with 99490.
Which add-on reports additional CCM time personally furnished by a physician or QHP?
Use 99437 with 99491 for an additional 30 minutes of personally furnished CCM. Code 99439 is the additional-time code paired with clinical staff CCM code 99490.
Can 99439 be reported in the same month as complex chronic care management?
No. Do not report 99490 and 99439 with complex CCM codes 99487 or 99489 for the same patient in the same month.
Can remote physiologic monitoring be billed in the same month as 99439?
Yes. Medicare allows remote physiologic monitoring treatment management, such as 99457 or 99458, in the same month as CCM, but the same minutes cannot be counted toward both services.
Does a partial 20-minute block count toward an additional unit?
No. Each unit of 99439 requires a full additional 20 minutes; a shorter remaining interval is not separately reportable.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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