Billing code 36513: Platelet apheresisMedicare rate & RVUs in Guam
Report platelet-directed therapeutic apheresis when blood is processed extracorporeally to remove platelets for treatment of a clinical condition.
CMS doesn’t publish an office rate for 36513 in Guam.
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 36513 covers
This service processes a patient’s blood through an extracorporeal apheresis system to remove platelets while returning other blood components, with replacement fluid as clinically indicated. It is commonly performed by an apheresis or transfusion medicine team in a hospital apheresis unit, including for patients who need rapid platelet reduction because of a serious platelet-related condition.
Select this code when platelets are the therapeutic removal target; codes for removing white cells, red cells, or plasma describe different targets. The record should support the clinical indication and identify the platelet-directed procedure performed. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. CMS does not pay an assistant at surgery and does not permit co-surgeons or team surgery for this service.
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.
36513 in Hawaii, Guam
| Payment locality | Office | Facility |
|---|---|---|
| Hawaii, Guam | Unavailable | $88.35 |
How the 36513 rate is calculated
Each of 36513’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 · 36513
RVUs × geographic indexes × conversion factor
Work1.95
1.95 RVUs× 1.000 GPCI
Practice expense0.53
0.53 RVUs× 1.000 GPCI
Malpractice0.16
0.16 RVUs× 1.000 GPCI
Adjusted RVUs
2.6400
Conversion factor
$33.4009
Medicare rate
$88.18
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 36513
The CMS indicators that decide how 36513 is paid alongside other services.
CMS payment indicators · 36513
Platelet apheresis
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
36513 without 51 · national facility
$88.18
Platelet apheresis
36513-51 · Second procedure: 50%
$44.09
When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).
36513 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 36511Leukocyte apheresis
- Choose 36513 when platelets are the removal target; 36511 is for therapeutic apheresis directed at white blood cells.
- 36512Red cell apheresis
- Choose 36513 for platelet removal. Code 36512 is for therapeutic apheresis directed at red blood cells.
- 36514Plasma exchange
- Choose 36513 when platelets are removed; 36514 describes therapeutic apheresis directed at plasma.
- 36516Therapeutic apheresis
- Code 36513 targets platelet removal. Code 36516 describes selective immunoadsorption rather than platelet-directed removal.
36513 billing questions
How do I distinguish this from other therapeutic apheresis codes?
Use this code when platelets are the component removed. Codes 36511, 36512, and 36514 address white cells, red cells, and plasma, respectively.
Is modifier 50 appropriate when both sides are involved?
No. CMS identifies bilateral adjustment as inappropriate for this service because the descriptor or anatomy does not support modifier 50.
Are same-day preoperative and postoperative services included?
Yes. The code has a 0-day global period, with same-day preoperative and postoperative care included.
How does the multiple procedure reduction work?
When multiple procedures are performed in the same session, CMS pays the highest-valued procedure in full and applies the standard 50% reduction to the others.
Can an assistant, co-surgeon, or surgical team be reported?
CMS does not pay an assistant at surgery for this service and does not permit co-surgeon or team-surgery reporting.
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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