Billing code 86510: Histoplasmosis skin testMedicare rate & RVUs
Reports administration of a histoplasmin skin test to assess delayed skin reactivity to Histoplasma antigen, with interpretation reported separately.
Medicare pays $8.35 for 86510 nationally in the office. Local office rates run $7.06–$11.74.
Medicare rate · 86510
Histoplasmosis skin test
- Work RVUs
- 0
- Total RVUs
- 0.25
- Global days
- XXX
National rate · 2026
$8.35
Office setting, before claim adjustments.
See every locality for 86510 →Billed by an NP, PA or therapist? →
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 10 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
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
109 payment localities
$7.06 to $11.74
109 of 109 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Alabama | $7.20 | Unavailable |
| Alaska* | $8.72 | Unavailable |
| Arizona | $8.05 | Unavailable |
| Arkansas | $7.06 | Unavailable |
| Atlanta | $8.55 | Unavailable |
| Austin | $8.78 | Unavailable |
| Bakersfield | $8.99 | Unavailable |
| Baltimore/Surr. Cntys | $9.01 | Unavailable |
| Beaumont | $7.61 | Unavailable |
| Brazoria | $8.20 | Unavailable |
| Chicago | $8.82 | Unavailable |
| Chico | $8.96 | Unavailable |
| Colorado | $8.79 | Unavailable |
| Connecticut | $9.04 | Unavailable |
| Dallas | $8.27 | Unavailable |
| Dc + Md/Va Suburbs | $9.81 | Unavailable |
| Delaware | $8.22 | Unavailable |
| Detroit | $8.30 | Unavailable |
| East St. Louis | $8.05 | Unavailable |
| El Centro | $8.97 | Unavailable |
| Fort Lauderdale | $8.72 | Unavailable |
| Fort Worth | $8.19 | Unavailable |
| Fresno | $8.96 | Unavailable |
| Galveston | $8.24 | Unavailable |
| Hanford-Corcoran | $8.96 | Unavailable |
| Hawaii, Guam | $9.31 | Unavailable |
| Houston | $8.42 | Unavailable |
| Idaho | $7.53 | Unavailable |
| Indiana | $7.59 | Unavailable |
| Iowa | $7.47 | Unavailable |
| Kansas | $7.41 | Unavailable |
| Kentucky | $7.43 | Unavailable |
| Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) | $9.70 | Unavailable |
| Madera | $8.96 | Unavailable |
| Manhattan | $9.84 | Unavailable |
| Merced | $8.96 | Unavailable |
| Metropolitan Boston | $9.87 | Unavailable |
| Metropolitan Kansas City | $7.85 | Unavailable |
| Metropolitan Philadelphia | $8.74 | Unavailable |
| Metropolitan St. Louis | $7.97 | Unavailable |
| Miami | $9.19 | Unavailable |
| Minnesota | $8.35 | Unavailable |
| Mississippi | $7.15 | Unavailable |
| Modesto | $8.96 | Unavailable |
| Montana** | $8.35 | Unavailable |
| Napa | $10.74 | Unavailable |
| Nebraska | $7.53 | Unavailable |
| Nevada** | $8.30 | Unavailable |
| New Hampshire | $8.64 | Unavailable |
| New Mexico | $7.75 | Unavailable |
| New Orleans | $7.92 | Unavailable |
| North Carolina | $7.69 | Unavailable |
| North Dakota** | $8.15 | Unavailable |
| Northern Nj | $9.66 | Unavailable |
| Nyc Suburbs/Long Island | $10.15 | Unavailable |
| Ohio | $7.66 | Unavailable |
| Oklahoma | $7.42 | Unavailable |
| Oxnard-Thousand Oaks-Ventura | $9.68 | Unavailable |
| Portland | $9.15 | Unavailable |
| Poughkpsie/N Nyc Suburbs | $9.18 | Unavailable |
| Puerto Rico | $8.43 | Unavailable |
| Queens | $9.96 | Unavailable |
| Redding | $8.96 | Unavailable |
| Rest Of California | $8.96 | Unavailable |
| Rest Of Florida | $8.17 | Unavailable |
| Rest Of Georgia | $7.55 | Unavailable |
| Rest Of Illinois | $7.84 | Unavailable |
| Rest Of Louisiana | $7.41 | Unavailable |
| Rest Of Maine | $7.58 | Unavailable |
| Rest Of Maryland | $8.42 | Unavailable |
| Rest Of Massachusetts | $8.71 | Unavailable |
| Rest Of Michigan | $7.70 | Unavailable |
| Rest Of Missouri | $7.24 | Unavailable |
| Rest Of New Jersey | $9.12 | Unavailable |
| Rest Of New York | $7.85 | Unavailable |
| Rest Of Oregon | $8.22 | Unavailable |
| Rest Of Pennsylvania | $7.67 | Unavailable |
| Rest Of Texas | $7.91 | Unavailable |
| Rest Of Washington | $8.70 | Unavailable |
| Rhode Island | $8.58 | Unavailable |
| Riverside-San Bernardino-Ontario | $9.07 | Unavailable |
| Sacramento-Roseville-Folsom | $9.50 | Unavailable |
| Salinas | $9.47 | Unavailable |
| San Diego-Chula Vista-Carlsbad | $9.77 | Unavailable |
| San Francisco-Oakland-Berkeley (Marin Cnty) | $11.46 | Unavailable |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty) | $11.44 | Unavailable |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty) | $11.74 | Unavailable |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty) | $11.69 | Unavailable |
| San Luis Obispo-Paso Robles | $9.31 | Unavailable |
| Santa Cruz-Watsonville | $9.92 | Unavailable |
| Santa Maria-Santa Barbara | $9.53 | Unavailable |
| Santa Rosa-Petaluma | $10.02 | Unavailable |
| Seattle (King Cnty) | $10.11 | Unavailable |
| South Carolina | $7.69 | Unavailable |
| South Dakota** | $8.13 | Unavailable |
| Southern Maine | $8.15 | Unavailable |
| Stockton | $8.96 | Unavailable |
| Suburban Chicago | $8.82 | Unavailable |
| Tennessee | $7.47 | Unavailable |
| Utah | $7.84 | Unavailable |
| Vallejo | $10.72 | Unavailable |
| Vermont | $8.11 | Unavailable |
| Virgin Islands | $8.43 | Unavailable |
| Virginia | $8.12 | Unavailable |
| Visalia | $8.96 | Unavailable |
| West Virginia | $7.44 | Unavailable |
| Wisconsin | $7.78 | Unavailable |
| Wyoming** | $8.26 | Unavailable |
| Yuba City | $8.96 | Unavailable |
86510 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
$7.06
$10.35
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $8.72 | 1 |
| AL | $7.20 | 1 |
| AR | $7.06 | 1 |
| AZ | $8.05 | 1 |
| CA | $8.96–$11.74 | 29 |
| CO | $8.79 | 1 |
| CT | $9.04 | 1 |
| DC | $9.81 | 1 |
| DE | $8.22 | 1 |
| FL | $8.17–$9.19 | 3 |
| GA | $7.55–$8.55 | 2 |
| GU | $9.31 | 1 |
| HI | $9.31 | 1 |
| IA | $7.47 | 1 |
| ID | $7.53 | 1 |
| IL | $7.84–$8.82 | 4 |
| IN | $7.59 | 1 |
| KS | $7.41 | 1 |
| KY | $7.43 | 1 |
| LA | $7.41–$7.92 | 2 |
| MA | $8.71–$9.87 | 2 |
| MD | $8.42–$9.81 | 3 |
| ME | $7.58–$8.15 | 2 |
| MI | $7.70–$8.30 | 2 |
| MN | $8.35 | 1 |
| MO | $7.24–$7.97 | 3 |
| MS | $7.15 | 1 |
| MT | $8.35 | 1 |
| NC | $7.69 | 1 |
| ND | $8.15 | 1 |
| NE | $7.53 | 1 |
| NH | $8.64 | 1 |
| NJ | $9.12–$9.66 | 2 |
| NM | $7.75 | 1 |
| NV | $8.30 | 1 |
| NY | $7.85–$10.15 | 5 |
| OH | $7.66 | 1 |
| OK | $7.42 | 1 |
| OR | $8.22–$9.15 | 2 |
| PA | $7.67–$8.74 | 2 |
| PR | $8.43 | 1 |
| RI | $8.58 | 1 |
| SC | $7.69 | 1 |
| SD | $8.13 | 1 |
| TN | $7.47 | 1 |
| TX | $7.61–$8.78 | 8 |
| UT | $7.84 | 1 |
| VA | $8.12–$9.81 | 2 |
| VI | $8.43 | 1 |
| VT | $8.11 | 1 |
| WA | $8.70–$10.11 | 2 |
| WI | $7.78 | 1 |
| WV | $7.44 | 1 |
| WY | $8.26 | 1 |
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
Work0.00
0.00 RVUs× 1.000 GPCI
Practice expense0.24
0.24 RVUs× 1.000 GPCI
Malpractice0.01
0.01 RVUs× 1.000 GPCI
Adjusted RVUs
0.2500
Conversion factor
$33.4009
Medicare rate
$8.35
Every GPCI starts 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 · National
86510 vs 86580 vs 86698: Medicare rates
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
Show the CMS file lines behind this rate
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