ICD-10 Diagnosis Code A31

Infection due to other mycobacteria

Diagnosis Code A31

ICD-10: A31
Short Description: Infection due to other mycobacteria
Long Description: Infection due to other mycobacteria
This is the 2018 version of the ICD-10-CM diagnosis code A31

Not Valid for Submission
The code A31 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Certain infectious and parasitic diseases (A00–B99)
    • Other bacterial diseases (A30-A49)
      • Infection due to other mycobacteria (A31)

Information for Patients


Mycobacterial Infections

Mycobacteria are a type of germ. There are many different kinds. The most common one causes tuberculosis. Another one causes leprosy. Still others cause infections that are called atypical mycobacterial infections. They aren't "typical" because they don't cause tuberculosis. But they can still harm people, especially people with other problems that affect their immunity, such as AIDS.

Sometimes you can have these infections with no symptoms at all. At other times, they can cause lung symptoms similar to tuberculosis:

  • Cough
  • Weight loss
  • Coughing up blood or mucus
  • Weakness or fatigue
  • Fever and chills
  • Night sweats
  • Lack of appetite and weight loss

Medicines can treat these infections, but often more than one is needed to cure the infection.

  • Leprosy (Medical Encyclopedia)
  • Mycobacterial culture (Medical Encyclopedia)


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