CPT code 88374: ISH analysis, computer-assisted morphometry2026 Medicare rate & RVUs in South Dakota

Reports computer-assisted quantitative or semiquantitative morphometric analysis of in situ hybridization findings in a tissue specimen.

CMS RVU26DEffective Oct 1, 2026One payment locality181K Medicare services in 2024

In South Dakota, Medicare pays $265.76 for 88374 in the office.

$265.76Office (non-facility)
Not available in this settingHospital or facility
−0.2%vs the national office rate ($266.21)

Check a contract rate as a % of Medicare · 88374 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 88374 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in South Dakota
  2. What 88374 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 88374 covers

A pathology laboratory uses image-analysis technology to quantify or semiquantify in situ hybridization signals in a tissue specimen. The analysis supports interpretation of molecular markers visible in cells or tissue, such as gene-copy patterns assessed in a tumor biopsy. A pathologist reviews the findings and incorporates them into the diagnostic workup; the technical work is generally performed by laboratory staff using specialized imaging equipment.

Select this service when the requested work is morphometric analysis of an in situ hybridization assay using computer-assisted technology, rather than manual measurement or tumor immunohistochemistry analysis. The record should identify the specimen, the assay and target, the quantitative or semiquantitative analysis performed, and the resulting interpretation. CMS recognizes separately priced professional and technical components: modifier 26 identifies the professional interpretation, modifier TC identifies the equipment-and-staff portion, and reporting without either modifier represents the global 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.

How South Dakota compares for 88374

Across 109 of 109 payment localities, the office rate for 88374 runs from $232.73 in Arkansas to $373.17 in San Benito County, CA. South Dakota pays $265.76. The RVUs are the same everywhere; the geographic indexes change the dollars.

88374 in South Dakota vs other payment areas
  1. South Dakota · this page$265.76
  2. Los Angeles, CA · California$310.26+$44.50
  3. Washington, DC area · District of Columbia$309.78+$44.02
  4. Miami, FL · Florida$276.87+$11.11
  5. Chicago, IL · Illinois$268.46+$2.70
  6. Manhattan, NY · New York$306.63+$40.87
  7. Alaska · Alaska$296.39+$30.63

Other areas in South Dakota first, then benchmark localities. Bars start at $0.

Every other payment area

88374 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$236.52—
ArkansasArkansas$232.73—
ArizonaArizona$258.82—
Bakersfield, CACalifornia$289.10—
Chico, CACalifornia$288.99—
El Centro, CACalifornia$288.99—
Fresno, CACalifornia$288.99—
Hanford, CACalifornia$288.99—

88374 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.

$232.73

$331.08

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
88374 office rate range by state
State / territoryOffice rate rangeLocalities
AK$296.391
AL$236.521
AR$232.731
AZ$258.821
CA$288.99–$373.1729
CO$281.471
CT$285.061
DC$309.781
DE$263.471
FL$256.19–$276.873
GA$240.94–$270.192
GU$298.141
HI$298.141
IA$245.821
ID$247.041
IL$246.12–$273.284
IN$248.701
KS$243.301
KY$240.051
LA$239.14–$252.422
MA$279.02–$313.002
MD$269.28–$309.783
ME$247.14–$263.842
MI$245.83–$258.432
MN$272.551
MO$233.74–$254.923
MS$233.351
MT$266.201
NC$250.211
ND$265.811
NE$247.681
NH$275.761
NJ$289.12–$305.792
NM$246.821
NV$266.331
NY$254.25–$313.165
OH$245.751
OK$240.901
OR$265.07–$292.622
PA$246.89–$276.522
PR$268.781
RI$274.471
SC$248.231
SD$265.761
TN$244.501
TX$244.99–$279.838
UT$252.031
VA$262.01–$309.782
VI$268.781
VT$263.521
WA$278.90–$320.982
WI$255.871
WV$235.691
WY$266.031

See 88374 in every payment locality

How the 88374 rate is calculated

Each of 88374’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 · 88374

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.91

0.91 RVUs× 1.000 GPCI

Practice expense7.04

7.04 RVUs× 1.000 GPCI

Malpractice0.02

0.02 RVUs× 1.000 GPCI

Adjusted RVUs

7.9700

Conversion factor

$33.4009

Medicare rate

$266.21

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact South Dakota inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

11,310

Code
88374
Physician work
0.91
Practice expense
7.04
Malpractice
0.02

GPCI2026.csv

94

Locality
South Dakota
Physician work
1.000
Practice expense
1.000
Malpractice
0.336
Office calculation for 88374 in South Dakota
ComponentRVULocality factorAdjusted
Physician work0.91× 1.0000.9100
Practice expense7.04× 1.0007.0400
Malpractice0.02× 0.3360.0067
Total RVUs7.9567
Conversion factor× 33.4009

Office rate, South Dakota$265.76

Office: (0.91 × 1 + 7.04 × 1 + 0.02 × 0.336) × $33.4009 = $265.76

Open 88374 in the RVU calculator

Payment rules and modifiers for 88374

The CMS indicators that decide how 88374 is paid alongside other services.

CMS payment indicators · 88374

ISH analysis, computer-assisted morphometry

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical1Diagnostic test with separate professional (26) and technical (TC) components.

What modifiers do to the payment

Modifier 26 · payment effect

With and without the modifier

88374 without 26 · national office

$266.21

ISH analysis, computer-assisted morphometry

88374-26 · Professional component

$39.41

Pays only the interpretation and report.

When to use modifier 26

How 88374 has changed in South Dakota

88374 · Office / nonfacility

$265.76

Effective 2026-10-01

The base rate is $2.09 higher than on 2025-10-01, moving from $263.67 to $265.76 (0.8%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release
  1. January 1, 2026

    RVU26A

    $263.67changed to$265.76

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.93 changed to 0.91
    • Practice expense RVU 7.21 changed to 7.04
    • Malpractice RVU 0.03 changed to 0.02
    • Malpractice GPCI 0.382 changed to 0.336

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $286.86changed to$263.67

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 7.68 changed to 7.21
    • Malpractice RVU 0.02 changed to 0.03

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $282.18changed to$286.86

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $305.91changed to$282.18

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 8.09 changed to 7.68
    • Malpractice GPCI 0.364 changed to 0.382
  5. January 1, 2023

    RVU23A

    $331.42changed to$305.91

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 8.64 changed to 8.09
    • Malpractice GPCI 0.347 changed to 0.364

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $351.96changed to$331.42

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 9.15 changed to 8.64

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $347.81changed to$351.96

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 8.70 changed to 9.15
    • Malpractice GPCI 0.368 changed to 0.347

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $330.40changed to$347.81

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 8.23 changed to 8.70
    • Malpractice GPCI 0.389 changed to 0.368

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $350.92changed to$330.40

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 8.81 changed to 8.23

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $342.80changed to$350.92

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 8.61 changed to 8.81
    • Malpractice RVU 0.03 changed to 0.02
    • Malpractice GPCI 0.395 changed to 0.389

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $345.23changed to$342.80

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 8.70 changed to 8.61
    • Malpractice GPCI 0.400 changed to 0.395

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $205.11changed to$345.23

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 4.77 changed to 8.70
    • Malpractice RVU 0.02 changed to 0.03

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $204.09changed to$205.11

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    No ratechanged to$204.09

    Held through RVU15B.

  15. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$265.76Not available in this settingRVU26D
2026-07-01$265.76Not available in this settingRVU26C
2026-04-01$265.76Not available in this settingRVU26B
2026-01-01$265.76Not available in this settingRVU26A
2025-10-01$263.67Not available in this settingRVU25D
2025-07-01$263.67Not available in this settingRVU25C
2025-04-01$263.67Not available in this settingRVU25B
2025-01-01$263.67Not available in this settingRVU25A
2024-10-01$286.86Not available in this settingRVU24D
2024-07-01$286.86Not available in this settingRVU24C
2024-04-01$286.86Not available in this settingRVU24B
2024-03-09$286.86Not available in this settingRVU24AR
2024-01-01$282.18Not available in this settingRVU24A
2023-10-01$305.91Not available in this settingRVU23D
2023-07-01$305.91Not available in this settingRVU23C
2023-04-01$305.91Not available in this settingRVU23B
2023-01-01$305.91Not available in this settingRVU23A
2022-10-01$331.42Not available in this settingRVU22D
2022-07-01$331.42Not available in this settingRVU22C
2022-04-01$331.42Not available in this settingRVU22B
2022-01-01$331.42Not available in this settingRVU22A
2021-10-01$351.96Not available in this settingRVU21D
2021-07-01$351.96Not available in this settingRVU21C
2021-04-01$351.96Not available in this settingRVU21B
2021-01-01$351.96Not available in this settingRVU21A
2020-10-01$347.81Not available in this settingRVU20D
2020-07-01$347.81Not available in this settingRVU20C
2020-04-01$347.81Not available in this settingRVU20B
2020-01-01$347.81Not available in this settingRVU20A
2019-10-01$330.40Not available in this settingRVU19D
2019-07-01$330.40Not available in this settingRVU19C
2019-04-01$330.40Not available in this settingRVU19B
2019-01-01$330.40Not available in this settingRVU19A
2018-10-01$350.92Not available in this settingRVU18D
2018-07-01$350.92Not available in this settingRVU18C
2018-04-01$350.92Not available in this settingRVU18B
2018-01-01$350.92Not available in this settingRVU18AR1
2017-10-01$342.80Not available in this settingRVU17D
2017-07-01$342.80Not available in this settingRVU17C
2017-04-01$342.80Not available in this settingRVU17B
2017-01-01$342.80Not available in this settingRVU17A
2016-10-01$345.23Not available in this settingRVU16D
2016-07-01$345.23Not available in this settingRVU16C
2016-04-01$345.23Not available in this settingRVU16B
2016-01-01$345.23Not available in this settingRVU16A
2015-10-01$205.11Not available in this settingRVU15D
2015-07-01$205.11Not available in this settingRVU15C
2015-04-01$204.09Not available in this settingRVU15B
2015-01-01$204.09Not available in this settingRVU15A
2014-10-01Not in this releaseNot in this releaseRVU14D
2014-07-01Not in this releaseNot in this releaseRVU14C
2014-04-01Not in this releaseNot in this releaseRVU14B
2014-01-01Not in this releaseNot in this releaseRVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 88374 for an earlier date of service

Where the South Dakota rate applies

South Dakota is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in South Dakota. Some span more than one payment area; confirm with the service ZIP.

  • Aberdeen
  • Agar
  • Agency Village
  • Akaska
  • Albee
  • Alcester
  • Alexandria
  • Allen

Browse all communities in South Dakota

88374 billing questions

How does this differ from manual ISH morphometric analysis?

This code is for quantitative or semiquantitative ISH morphometric analysis performed with computer-assisted technology. Use the manual counterpart when the morphometric analysis is performed manually.

Is this the same as tumor immunohistochemistry analysis?

No. This service analyzes in situ hybridization findings; tumor immunohistochemistry analysis evaluates immunostaining and is reported with the applicable IHC morphometric-analysis code.

Which modifiers identify the components?

Modifier 26 reports the professional interpretation, and modifier TC reports the technical service, including equipment and staff. Without either modifier, the claim represents the global service.

What documentation supports reporting this service?

Document the specimen and ISH assay, the use of computer-assisted quantitative or semiquantitative morphometric analysis, and the pathologist's interpretation of the findings.

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
RVUs for 88374PPRRVU2026_Oct_nonQPP.csv, line 11,310 (RVU26D)
Geographic factors for South DakotaGPCI2026.csv, line 94 (RVU26D)

Open CMS sourceHow we calculate rates

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