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Delaware General Assembly· HB 429Signed

Biologics/Biosimilars/Step Therapy/Updates, the official text

Shown verbatim: the complete text as captured from the official PDF posted by the Delaware General Assembly, fetched 2026-09-25. Page and line markers are part of the official record; nothing is edited or removed. This is the current version. The official bill page.
SPONSOR: Rep. Minor-Brown & Sen. Pinkney
                                                                         Reps. Heffernan, K. Johnson, Morrison, Burns, Harris,
                                                                         Berry, Carson, Lambert, Ross Levin, Snyder-Hall; Sens.
                                                                         Seigfried, Poore

                              HOUSE OF REPRESENTATIVES
                                153rd GENERAL ASSEMBLY

                                                 HOUSE BILL NO. 429

    AN ACT TO AMEND TITLE 18 OF THE DELAWARE CODE RELATING TO THE STEP THERAPY EXCEPTION
    PROCESS.

    BE IT ENACTED BY THE GENERAL ASSEMBLY OF THE STATE OF DELAWARE:

1   Section 1. Amend § 3381, Title 18 of the Delaware Code by making deletions as shown by strike through and

2 insertions as shown by underline as follows:

3   § 3381. Step therapy exception process [For application of this section, see 82 Del. Laws, c. 44, § 3].

4   (e) This section shall not be construed to prevent any of the following:

5   (1) An insurer, health plan, or utilization review entity from requiring a patient to try an AB-rated generic

6   equivalent prior to providing coverage for the equivalent branded prescription drug. from requiring a patient to try

7   either of the following:

8                  a. An AB-rated generic equivalent or an interchangeable biological product as defined in 42 U.S.C. §

9   262(i)(3) prior to providing coverage for the equivalent branded prescription drug.

10                 b. A biosimilar as defined in 42 U.S.C. § 262(i)(2) prior to providing coverage for the brand name

11  prescription reference product drug or drugs.

12  Section 2. Amend § 3591, Title 18 of the Delaware Code by making deletions as shown by strike through and

13 insertions as shown by underline as follows:

14  § 3591. Step therapy exception process [For application of this section, see 82 Del. Laws, c. 44, § 3].

15  (e) This section shall not be construed to prevent:

16  (1) An insurer, health plan, or utilization review entity from requiring a patient to try an AB-rated generic

17  equivalent prior to providing coverage for the equivalent branded prescription drug. from requiring a patient to try

18  either of the following:

19                 a. An AB-rated generic equivalent or an interchangeable biological product as defined in 42 U.S.C. §

20  262(i)(3) prior to providing coverage for the equivalent branded prescription drug.

21                 b. A biosimilar as defined in 42 U.S.C. § 262(i)(2) prior to providing coverage for the brand name

22  prescription reference product drug or drugs.

    HD : CD : SCD                                  Page 1 of 2                Released: 05/19/2026 11:53 AM
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                                                                    SYNOPSIS

          This Act modernizes Delaware law by adding modern medical treatment options biologics or biosimilars to the
step therapy exception process. The current law was passed before biosimilars were widely available. Biosimilars are to
biologics what generic drugs are to traditional drugs once their exclusivity expires.

          This revision adds an exclusion to step therapy protocol exceptions for interchangeable biologics and biosimilars.

HD : CD : SCD  Page 2 of 2  Released: 05/19/2026 11:53 AM
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