2022 ICD-10-CM Code A31.8

Other mycobacterial infections

Version 2021

Valid for Submission

ICD-10:A31.8
Short Description:Other mycobacterial infections
Long Description:Other mycobacterial infections

Code Classification

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

A31.8 is a billable diagnosis code used to specify a medical diagnosis of other mycobacterial infections. The code A31.8 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code A31.8 might also be used to specify conditions or terms like abscess of spinal subdural space caused by bacterium, abscess of spinal subdural space caused by mycobacterium, atypical mycobacterial lymphadenitis, bacterial tenosynovitis, cervical atypical mycobacterial lymphadenitis , cervical lymphadenitis, etc.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code A31.8 are found in the index:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert A31.8 to ICD-9 Code

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:

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


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)