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Q30.0: Choanal atresia

You have a congenital defect in your nasal opening on one or both sides.

We need the nose for breathing and smelling. The outside of the nose is composed of bone and cartilage. The nasal septum divides the nasal cavity into two halves. The inside of the nose is lined with a moist mucous membrane. The nasal concha are bony protrusions in the nose, and also lined with mucous membrane. The nostrils form the front of the nasal opening. Inside the nose the rear nasal opening goes to the throat.

While developing in the womb, many different types of tissue develop in the body. The organs and body parts develop out of the various types of tissue. If tissue does not develop properly, defects can result.

Your nasal opening is narrowed or sealed on one or both sides. One possible reason is that the rear nasal opening has been narrowed or sealed by a thin membrane or by bone tissue.

A narrow or sealed nasal opening can hinder breathing. If the nasal opening is sealed on both sides the baby can only breathe through its mouth once born. It may then suffer from breathlessness. If it is breathless, its skin can turn blue. It may be particularly breathless when drinking, as it is unable to breathe through its nose. If the rear nasal opening is sealed on one side, it may have purulent rhinitis for a long period of time or repeatedly.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information

Note

This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.

Source

Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).