Billing code 93793: Warfarin managementMedicare rate & RVUs in Florida
Warfarin management after a new INR result includes interpreting the result, addressing the dose, instructing the patient, and scheduling further testing.
Medicare pays $11.62–$12.42 for 93793 in the office in Florida, from Rest Of Florida to Miami. 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.
On this page 9 sections
What 93793 covers
This service covers management of a patient taking warfarin after a new INR result from home monitoring, an office test, or a laboratory test. A physician or other qualified health care professional reviews and interprets the result, determines whether the warfarin dose should change, ensures the patient receives instructions, and arranges further INR testing. Clinical staff, including anticoagulation clinic nurses, may help communicate and carry out the plan under the billing professional's direction. Patients commonly include those treated for atrial fibrillation, venous thromboembolism, or a mechanical heart valve; the work may occur without an in-person visit.
Report 93793 once per day when the required management is performed, rather than once for each INR value reviewed. Document the new result and its source, the interpretation and dosing decision, patient instructions, and the plan for further testing. CMS designates 93793 as professional-component-only: it represents interpretation and management, while INR testing is a separate service. Do not use an E/M visit code merely to duplicate the same INR review and dosing work.
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 93793 pays more and less in Florida
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$11.62 to $12.42
| Payment locality | Office | Facility |
|---|---|---|
| Fort Lauderdale | $12.03 | Unavailable |
| Miami | $12.42 | Unavailable |
| Rest Of Florida | $11.62 | Unavailable |
How the 93793 rate is calculated
Each of 93793’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 · 93793
RVUs × geographic indexes × conversion factor
Work0.18
0.18 RVUs× 1.000 GPCI
Practice expense0.16
0.16 RVUs× 1.000 GPCI
Malpractice0.01
0.01 RVUs× 1.000 GPCI
Adjusted RVUs
0.3500
Conversion factor
$33.4009
Medicare rate
$11.69
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 93793
The CMS indicators that decide how 93793 is paid alongside other services.
CMS payment indicators · 93793
Warfarin management
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| 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 | 2 | Professional component only. |
93793 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 93792INR training
- 93792 covers training a patient or caregiver to perform and report home INR tests. Use 93793 for subsequent warfarin management based on a new INR result, not for the training itself.
- G0250Md inr test revie inter mgmt
- G0250 describes Medicare-covered management associated with home INR testing for eligible patients and is reported per four tests. 93793 describes management following a new home, office, or laboratory INR result and is reported once per day.
- 99211Office visit
- 99211 describes a brief established-patient E/M visit when its requirements are met. When the work consists of the complete INR review, warfarin dosing decision, patient instructions, and further testing plan, 93793 describes that work.
- 85610Prothrombin time
- 85610 describes the prothrombin time/INR test. 93793 describes the professional interpretation and warfarin management following a new result; the testing and management are distinct services.
93793 billing questions
Can 93793 be billed more than once in a day if several INR results are reviewed?
No. Report it once per day when the required warfarin management is performed, not once for each result.
Does 93793 include the INR test itself?
No. For a laboratory or office prothrombin time/INR test, 85610 describes the testing service when it is separately reportable. Do not assume specimen collection warrants an additional charge.
Can 93793 be reported on the same day as home INR monitor training?
Do not report 93793 with 93792 on the same date. Code 93792 describes training the patient or caregiver to perform and report home INR testing; it is not the code for ongoing result review and warfarin management.
Who is responsible for the management billed under 93793?
A physician or other qualified health care professional performs the professional review and management. Clinical staff may help obtain results and convey instructions under that professional's direction.
Must the patient be seen in person?
No. Instructions may be conveyed by phone after a new home or laboratory INR result, provided the record supports the interpretation, dosing decision, patient instructions, and further testing plan.
Should modifier 26 or a same-day E/M code be added?
Do not append modifier 26; CMS already designates 93793 as professional-component-only. Do not report an E/M service for the same INR review and dosing work; a distinct E/M service requires separate supporting documentation.
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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