2025
ICD-10-CM
Diagnosis
Code

Q21.1 Atrial septal defect

  • Non-billable
  • 2016–2025

Q21.1 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Atrial septal defect.

Type 2 excludes

  • Ostium primum atrial septal defect (type I) (Q21.20)

Codes

Versions

  1. 2025

    No changes

  2. 2024

    Code changed

    • Type 2 excludes

        • ostium primum atrial septal defect (type I) (Q21.20)

    • Inclusion term

        • Excludes 2: ostium primum atrial septal defect (type I) (Q21.20)

  3. 2023

    Code changed

    • POA exempt status

        • true
        • false

    • Inclusion term

        • Coronary sinus defect
        • Patent or persistent foramen ovale
        • Patent or persistent ostium secundum defect (type II)
        • Patent or persistent sinus venosus defect
        • Excludes 2: ostium primum atrial septal defect (type I) (Q21.20)

  4. 2022

    No changes

  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    No changes

  9. 2017

    No changes

  10. 2016

    New code