2025
ICD-10-CM
Diagnosis
Code

Q21.8 Other congenital malformations of cardiac septa

  • Billable
  • POA Exempt
  • 2016–2025

Q21.8 is a billable/specific and POA-exempt diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Other congenital malformations of cardiac septa.

Inclusion term

  • Eisenmenger's defect

  • Pentalogy of Fallot

Code also

  • If applicable:

    • Eisenmenger's complex (I27.83)

    • Eisenmenger's syndrome (I27.83)

Versions

  1. 2025

    No changes

  2. 2024

    No changes

  3. 2023

    No changes

  4. 2022

    Code changed

    • Code also

        • if applicable:
        • Eisenmenger's complex (I27.83)
        • Eisenmenger's syndrome (I27.83)
        • , if applicable:
        • Eisenmenger's complex (I27.83)
        • Eisenmenger's syndrome (I27.83)
  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    Code changed

    • Code also

        • if applicable:
        • Eisenmenger's complex (I27.83)
        • Eisenmenger's syndrome (I27.83)
    • Type 1 excludes

        • Eisenmenger's complex (I27.8)
        • Eisenmenger's syndrome (I27.8)
  9. 2017

    No changes

  10. 2016

    New code