A31.0: Pulmonary mycobacterial infection

You have a lung inflammation caused by mycobacteria.

Mycobacteria are a particular type of bacteria. The bacteria trigger symptoms when the body’s defense system is weakened. The symptoms depend on which organ is affected. The bacteria are resistant to many drugs. The bacteria are difficult to treat. Treatment is therefore over a long period for the most part.

Your lungs have been inflamed by the bacteria. The lungs are on the left and right side of the ribcage. They are also connected to the nose and mouth via the bronchial tubes and windpipe. With a lung inflammation like this, coughing without phlegm is common. It is also sometimes possible to cough up blood. You may have breathing difficulties and pain in the ribcage. You can also have a fever and feel tired and feeble.

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


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.


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