# CPT 88319: Histochemical stain, enzyme constituents, each additional (add-on)

Medicare CPT 88319 pays $131.93 in a non-facility setting and $131.93 in a facility setting under the 2026 Medicare Physician Fee Schedule, before geographic adjustment. After geographic adjustment, state amounts run from $115.44 in Arkansas to $153.20 in District of Columbia, a 33% spread.

Web page: https://www.med-reveal.com/rates/88319-cpt-fee-schedule
Section: Laboratory and Pathology
Billed by: Dermatology

## Medicare rates

| | Amount |
| --- | --- |
| National non-facility | $131.93 |
| National facility | $131.93 |
| Conversion factor | 33.4009 |
| Release | 2026 Q4 (effective 2026-10-01) |

## By state

| State | Non-facility | Facility |
| --- | --- | --- |
| District of Columbia | $153.20 | $153.20 |
| California | $152.91 | $152.91 |
| Washington | $148.17 | $148.17 |
| Alaska | $147.55 | $147.55 |
| New Jersey | $147.22 | $147.22 |
| Hawaii | $147.07 | $147.07 |
| Massachusetts | $146.30 | $146.30 |
| New York | $146.25 | $146.25 |
| Connecticut | $141.24 | $141.24 |
| Colorado | $139.19 | $139.19 |
| Oregon | $137.87 | $137.87 |
| Maryland | $137.07 | $137.07 |
| New Hampshire | $136.46 | $136.46 |
| Rhode Island | $135.90 | $135.90 |
| Minnesota | $134.52 | $134.52 |
| Florida | $133.26 | $133.26 |
| Puerto Rico | $133.17 | $133.17 |
| Virgin Islands | $133.17 | $133.17 |
| Montana | $131.93 | $131.93 |
| Nevada | $131.88 | $131.88 |
| Wyoming | $131.67 | $131.67 |
| North Dakota | $131.34 | $131.34 |
| South Dakota | $131.27 | $131.27 |
| Delaware | $130.56 | $130.56 |
| Vermont | $130.30 | $130.30 |
| Texas | $130.20 | $130.20 |
| Pennsylvania | $129.83 | $129.83 |
| Virginia | $129.71 | $129.71 |
| Illinois | $129.07 | $129.07 |
| Arizona | $128.27 | $128.27 |
| Georgia | $126.93 | $126.93 |
| Maine | $126.51 | $126.51 |
| Wisconsin | $126.47 | $126.47 |
| Michigan | $125.42 | $125.42 |
| Utah | $125.02 | $125.02 |
| North Carolina | $123.96 | $123.96 |
| South Carolina | $123.15 | $123.15 |
| Indiana | $123.13 | $123.13 |
| New Mexico | $122.71 | $122.71 |
| Missouri | $122.57 | $122.57 |
| Nebraska | $122.57 | $122.57 |
| Idaho | $122.32 | $122.32 |
| Louisiana | $122.10 | $122.10 |
| Ohio | $122.06 | $122.06 |
| Iowa | $121.68 | $121.68 |
| Tennessee | $121.14 | $121.14 |
| Kansas | $120.53 | $120.53 |
| Oklahoma | $119.56 | $119.56 |
| Kentucky | $119.24 | $119.24 |
| West Virginia | $117.49 | $117.49 |
| Alabama | $117.30 | $117.30 |
| Mississippi | $115.89 | $115.89 |
| Arkansas | $115.44 | $115.44 |

## Related codes

- 88300: Level I surgical pathology, gross examination only — https://www.med-reveal.com/rates/88300-cpt-fee-schedule
- 88302: Level II surgical pathology, gross and microscopic examination — https://www.med-reveal.com/rates/88302-cpt-fee-schedule
- 88304: Level III surgical pathology, gross and microscopic examination — https://www.med-reveal.com/rates/88304-cpt-fee-schedule
- 88305: Level IV surgical pathology, gross and microscopic examination — https://www.med-reveal.com/rates/88305-cpt-fee-schedule
- 88307: Level V surgical pathology, gross and microscopic examination — https://www.med-reveal.com/rates/88307-cpt-fee-schedule
- 88309: Level VI surgical pathology, gross and microscopic examination — https://www.med-reveal.com/rates/88309-cpt-fee-schedule
- 88311: Decalcification procedure — https://www.med-reveal.com/rates/88311-cpt-fee-schedule
- 88312: Special stain, group I, microorganisms — https://www.med-reveal.com/rates/88312-cpt-fee-schedule

Commercial negotiated rates for 88319 by payer and state: https://www.med-reveal.com/solutions/rate-benchmarking

## Sources

- CMS Medicare fee schedules (2026 Q4): https://www.cms.gov/medicare/payment/fee-schedules