Billing code 86510: Histoplasmosis skin testMedicare rate & RVUs in Florida
Reports administration of a histoplasmin skin test to assess delayed skin reactivity to Histoplasma antigen, with interpretation reported separately.
Medicare pays $8.17–$9.19 for 86510 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 86510 covers
This service covers administration of a histoplasmin antigen skin test, typically by intradermal injection in an outpatient clinical setting. A physician or clinical staff member may administer the antigen as part of evaluating a patient’s skin reactivity to Histoplasma exposure. The test is distinct from a blood antibody assay: it evaluates a skin response rather than measuring circulating antibodies.
Report 86510 for the technical testing service. Document the antigen administered, the administration, and the clinical reason for testing. CMS classifies this as a technical-component-only code; interpretation is covered by a separate code when performed and documented. CMS assigns no physician work RVUs to 86510. Keep the test administration and the separately reported interpretation distinct in the record and claim.
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 86510 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
$8.17 to $9.19
| Payment locality | Office | Facility |
|---|---|---|
| Fort Lauderdale | $8.72 | Unavailable |
| Miami | $9.19 | Unavailable |
| Rest Of Florida | $8.17 | Unavailable |
How the 86510 rate is calculated
Each of 86510’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 · 86510
RVUs × geographic indexes × conversion factor
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Work 0.00Practice expense 0.24Malpractice 0.01
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 86510
The CMS indicators that decide how 86510 is paid alongside other services.
CMS payment indicators · 86510
Histoplasmosis skin test
| 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 | 3 | Technical component only. |
86510 compared with similar codes
Compare codes
86510 vs 86580 vs 86698: national Medicare rates
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How to choose
- 86580TB skin test
- Use 86510 for histoplasmin skin testing and 86580 for intradermal tuberculosis skin testing; the antigen and clinical question differ.
- 86698Histoplasma antibody
- 86698 is an antibody test for Histoplasma capsulatum. It measures circulating antibodies, unlike the skin response tested by 86510.
86510 billing questions
How is 86510 different from the tuberculosis skin test code?
86510 is for a histoplasmin antigen skin test. billing code 86580 is for an intradermal tuberculosis skin test.
Does 86510 include interpretation?
No. CMS identifies 86510 as technical-component-only; a separate code covers interpretation when it is performed and documented.
Should modifier 26 be appended for interpretation?
The interpretation is reported with its separate code, not as a professional component of 86510.
What documentation supports reporting 86510?
Record the histoplasmin antigen administration and the clinical reason for the test. Document interpretation separately when performed.
Is a Histoplasma antibody test interchangeable with 86510?
No. 86510 reports a skin test, while billing code 86698 reports an antibody test for Histoplasma capsulatum; they assess different immune responses.
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
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