1. ICD-10-CM Codes
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2. I00-I99
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3. I30-I5A
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4. I45-
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5. 2023 ICD-10-CM Diagnosis Code I45.2

2023 ICD-10-CM Diagnosis Code I45.2

Bifascicular block

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• I45.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM I45.2 became effective on October 1, 2022.
• This is the American ICD-10-CM version of I45.2 - other international versions of ICD-10 I45.2 may differ.

• Bilateral bundle branch block
• Bilateral bundle branch block (heart rhythm condition)
• Heart block
• Right bundle branch block and left anterior fascicular
• Right bundle branch block and left anterior fascicular block
• Right bundle branch block and left posterior fascicular block

• An electrocardiographic finding comprising right bundle branch block and left anterior fascicular block, or right bundle branch block and left posterior fascicular block. Defects occuring in two of the three divisions of the conduction system of the heart are considered bifascicular blocks. Technically left bundle branch block may be considered a bifascicular block.

• 308 Cardiac arrhythmia and conduction disorders with mcc
• 309 Cardiac arrhythmia and conduction disorders with cc
• 310 Cardiac arrhythmia and conduction disorders without cc/mcc
• 791 Prematurity with major problems
• 793 Full term neonate with major problems

Convert I45.2 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• Block, blocked
  • bundle-branch (complete) (false) (incomplete) I45.4
    ICD-10-CM Diagnosis Code I45.4

    Nonspecific intraventricular block

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Bundle-branch block NOS
    • left I44.7
      ICD-10-CM Diagnosis Code I44.7

      Left bundle-branch block, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Questionable As Admission Dx
      • incomplete I44.7
        ICD-10-CM Diagnosis Code I44.7

        Left bundle-branch block, unspecified

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Questionable As Admission Dx
        • with right bundle branch block I45.2
      • with right bundle branch block I45.2
    • right I45.10
      ICD-10-CM Diagnosis Code I45.10

      Unspecified right bundle-branch block

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Questionable As Admission Dx

      Applicable To

      • Right bundle-branch block NOS
      • with
        • left bundle branch block I45.2
        • left fascicular block I45.2
    • bilateral I45.2
  • heart I45.9
    ICD-10-CM Diagnosis Code I45.9

    Conduction disorder, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Heart block NOS
    • Stokes-Adams syndrome
    • bundle branch I45.4
      ICD-10-CM Diagnosis Code I45.4

      Nonspecific intraventricular block

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

      Applicable To

      • Bundle-branch block NOS
      • bilateral I45.2
  • intraventricular (nonspecific) I45.4
    ICD-10-CM Diagnosis Code I45.4

    Nonspecific intraventricular block

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Bundle-branch block NOS
    • bundle branch
      • bilateral I45.2
  • bifascicular I45.2 (cardiac)

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.