2024 ICD-10-CM Diagnosis Code A31.9
Mycobacterial infection, unspecified
- ICD-10-CM Code:
- A31.9
- ICD-10 Code for:
- Mycobacterial infection, unspecified
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Not chronic
- Code Navigator:
A31.9 is a billable diagnosis code used to specify a medical diagnosis of mycobacterial infection, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.
Unspecified diagnosis codes like A31.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Abscess of spinal cord caused by bacterium
- Abscess of spinal epidural space caused by bacterium
- Abscess of spinal epidural space caused by Mycobacterium
- Acid-fast bacteria present
- Atypical mycobacterial infection
- Atypical mycobacterial infection of hand
- Disseminated atypical infection caused by Mycobacterium co-occurrent with human immunodeficiency virus infection
- Disseminated atypical mycobacterial infection
- Disseminated atypical mycobacterial infection
- Disseminated mycobacteriosis
- Granuloma of spinal cord caused by bacterium
- Granuloma of spinal cord caused by Mycobacterium
- Infection due to mycobacteria resistant to multiple antimycobacterial agents
- Infection due to Mycobacteroides abscessus
- Mycobacterial gastritis
- Mycobacterial infection
- Mycobacterial infection of the central nervous system
- Mycobacterial spinal cord abscess
- Mycobacteriosis
- Mycobacteriosis with AIDS
- Reactive arthropathy following infection caused by Mycobacterium
- Skin and soft tissue atypical mycobacterial infection
- Spinal epidural abscess
Clinical Classification
Clinical Category is Bacterial infections
- CCSR Category Code: INF003
- Inpatient Default CCSR: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
- Outpatient Default CCSR: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Tabular List of Diseases and Injuries
The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.
Inclusion Terms
Inclusion TermsThese terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Atypical mycobacterial infection NOS
- Mycobacteriosis NOS
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
- - Disease, diseased - See Also: Syndrome;
- - Mycobacterium, mycobacterial (infection) - A31.9
Convert A31.9 to ICD-9-CM
- ICD-9-CM Code: 031.9 - Mycobacterial dis NOS
Patient Education
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.
[Learn More in MedlinePlus]
Code History
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
- FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
- 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.