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Billing code G0452 · Physician & professional

G0452 Medicaid reimbursement rate by state (2026)

Molecular pathology procedure. Medicaid pays a median of $36.76 for G0452 across 21 states, from $8.89 in Connecticut to $70.15 in New Mexico.

Data as of Oct 5, 202621 statesEvery rate links to its official source

States publishing
21
National median
$36.76units vary by state
Lowest
$8.89Connecticut
Highest
$70.15New Mexico
Answer

What does Medicaid pay for G0452?

21 state Medicaid programs publish a fee-for-service rate for G0452. The national median is $36.76 (units differ between states). New Mexico pays the most, $70.15, and Connecticut the least, $8.89, a 7.9x spread.

Medicare (non-facility, 2026 physician fee schedule): $44.40–$56.73 depending on the state's Medicare locality.

State ranking

G0452 rate by state: highest, middle and lowest

One like-for-like fee-for-service rate per state, ranked. The workspace lists all 21 states with every variant, modifier and effective date.

#StateMedicaid rateUnitPer hourManaged-care plans% of Medicare
1New Mexico Source · since 2025-01-01$70.15——Plans must pay at least this—
2Montana Source · since 2026-07-01$61.50——Not classified—
3Hawaii Source · since 2026-06-01$49.40——Plans negotiate; applies out of network—
10Vermont Source · since 2026-01-01$36.90——Not classified—
11Idaho Source · since 2026-07-01$36.76——Not classified—
12Minnesota Source · since 2026-02-01$35.76——Plans negotiate; applies out of network—
20Rhode Island Source · since 2013-01-01$11.35——Plans negotiate; applies out of network—
21Connecticut Source · since 2015-01-01$8.89——Not classified—
See all 21 states for G0452 — start free

13 more states, with every modifier and provider-type variant, rate history and the plan rule in each state. 14-day free trial, no credit card.

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Rates are per the unit shown for each state; units can differ between states. Medicare amounts are computed from the CMS relative value file and locality cost indices; states with several Medicare localities show a range. Confirm rates with the payer before billing.

Track G0452 in your states. Get an alert when any state changes it, with every variant and the managed-care rule.
Guide

How to read this table

  • Order. States are listed from the highest published rate to the lowest. No single unit is shared by 8 or more states for G0452, so the order is by published amount and is not a like-for-like rank.
  • Medicaid rate. The most the state's fee-for-service program pays for one unit, as published. 14 of the 21 states list more than one rate for G0452, by modifier, provider type or setting; the table shows the one that matches the provider level and setting used across states, without add-ons.
  • Unit. Of the 21 states, 2 publish G0452 per unit, and 19 schedules print no unit at all (a flat amount per service).
  • Per hour. G0452 is not billed in time units in these states, so no hourly figure is shown.
  • Managed-care plans. The rule the state sets for its plans on this rate. What each rule means is explained below.
  • % of Medicare. Medicare amounts exist for G0452, but no state's Medicaid unit matches Medicare's billing unit closely enough to compute a percentage.
  • Source and date. Each Source link opens the state's own document; “since” is the date the rate took effect.
Context

Why G0452 rates differ between states

Published rates for G0452 run from $8.89 in Connecticut to $70.15 in New Mexico, a 7.9x gap in the same unit. Half the states pay more than the median of $36.76 and half pay less. The usual reasons for a spread like this in physician & professional rates:

  • Modifiers such as professional or technical component, bilateral, multiple procedure and assistant at surgery change the amount paid, and states apply them with their own percentages.
  • Primary-care and pediatric add-ons, enhanced rates for certain specialties and targeted increases for access problems change individual codes without moving the rest of the schedule.
  • Each state sets its own physician conversion factor or fee for every code, and many update them on a state budget cycle rather than on Medicare's calendar.

Timing matters too. 15 states set the current rate for G0452 in 2026 or later, while 5 states still pay a rate that took effect in 2022 or earlier. A state that has not updated its rate in years will drift down the ranking as others raise theirs.

Managed care

What managed-care plans pay for G0452

What a plan pays for G0452 is negotiated privately, but the state decides how much room there is to negotiate. Here is how the rules break down across the 21 states.

In 5 states, the published rate binds plans: a floor, a pass-through or a state-set rate. In 9 states, plans negotiate and the published rate is a benchmark or out-of-network default. The rule for the remaining 7 states is not classified yet.

  • Plans negotiate; the published rate applies out of network (9 states). In-network rates can be above or below the published rate. The published rate is the benchmark both sides know, and the fallback if no contract is signed.
  • Plans must pay at least the published rate (5 states). The published rate is your floor. Negotiate up from it, and if a plan pays less, the contract provision is the basis for a payment dispute.

Plan-negotiated rates are never estimated here. To see the rule and its citation for a particular state, open that state's managed-care page, for example New Mexico managed care.

Billing

Units and billing for G0452

G0452 is a HCPCS Level II professional services code in the physician & professional line, billed mostly by physicians, nurse practitioners, physician assistants and other licensed practitioners. G codes describe professional services and procedures that have no CPT code, or that payers define more narrowly. Many are timed, so check the unit before comparing.

Physician-fee-schedule codes are billed per service: one unit is one occurrence unless the code itself is defined by time or quantity. Where a state publishes separate facility and non-facility amounts, the non-facility (office) amount is usually higher because the practice carries the overhead.

Medicare's 2026 physician fee schedule pays $44.40–$56.73 for G0452 (non-facility), depending on the Medicare locality. That is a useful reference point, but Medicare and Medicaid can define the unit differently, so compare only where the units match.

Before billing, confirm the rate, unit and any modifier with the state's current schedule or the plan: the amounts here are as published, not a guarantee of payment.

FAQ

Frequently asked questions

What does Medicaid pay for G0452?

It depends on the state. Of the 21 states with a published fee-for-service rate, the median is $36.76. New Mexico pays the most ($70.15) and Connecticut the least ($8.89).

Which state pays the highest Medicaid rate for G0452?

New Mexico, at $70.15, effective 2025-01-01.

Which state pays the lowest Medicaid rate for G0452?

Connecticut, at $8.89, effective 2015-01-01.

What unit is G0452 billed in?

Of the 21 states, 2 publish G0452 per unit, and 19 schedules print no unit at all (a flat amount per service).

Do managed-care plans pay the same rate for G0452?

Not necessarily. In 5 states, the published rate binds plans: a floor, a pass-through or a state-set rate. In 9 states, plans negotiate and the published rate is a benchmark or out-of-network default. The rule for the remaining 7 states is not classified yet. Each rule is cited to the plan contract, statute or notice in the workspace.