A31.9
BillableMycobacterial infection, unspecified
Mycobacterial infection, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Atypical mycobacterial infection NOS
- Mycobacteriosis NOS
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- certain localized infections - see body system-related chapters
Excludes 2
Conditions not included here, but the patient may have both
- •carrier or suspected carrier of infectious diseaseZ22
- •infectious and parasitic diseases complicating pregnancy, childbirth and the puerperiumO98
- •infectious and parasitic diseases specific to the perinatal periodP35-P39
- •influenza and other acute respiratory infectionsJ00-J22
- •leprosyA30
- •tuberculosisA15-A19
Use Additional Code
Additional codes that should follow this code
Related Codes(4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(174)
SNOMED CT
- Extradural intraspinal abscess63627007
- Intraspinal epidural abscess63627007
- Intraspinal extradural abscess63627007
- Spinal epidural abscess63627007
- Spinal extradural abscess63627007
- Infection due to mycobacteria88415009
- Mycobacterial disease88415009
- Mycobacteriosis88415009
- Arthropathy associated with bacterial disease111212009
- Mycobacterial infection (excluding tuberculosis AND leprosy)111811007
- Atypical mycobacterial disease111812000
- Atypical mycobacterial infection111812000
- Infection due to non-TB (tuberculous) mycobacteria111812000
- Post-bacterial arthropathy129133005
- Disseminated mycobacteriosis240383005
- Disseminated atypical mycobacterial infection240413000
- Skin and soft tissue atypical mycobacterial infection240415007
- Infection caused by Mycobacterium abscessus373029007
- Infection caused by Mycobacteroides abscessus373029007
- Mycobacterial infection of the central nervous system406594003
- Mycobacteriosis with AIDS (acquired immunodeficiency syndrome)420818005
- Mycobacteriosis with acquired immunodeficiency syndrome420818005
- Atypical mycobacterial infection of hand423892009
- Infection caused by Mycobacterium resistant to multiple antimycobacterial agents430945004
- Disseminated atypical infection caused by Mycobacterium co-occurrent with human immunodeficiency virus infection713967004
- Abscess of spinal cord caused by bacterium721250007
- Bacterial spinal cord abscess721250007
- Abscess of spinal epidural space caused by Mycobacterium838388009
- Mycobacterial spinal epidural abscess838388009
- Abscess of spinal epidural space caused by bacterium838391009
- Bacterial spinal epidural abscess838391009
- Mycobacterial reactive arthropathy870272002
- Reactive arthritis due to and following mycobacteriosis870272002
- Arthritis following mycobacteriosis870274001
- Mycobacterial postinfective arthritis870274001
- Mycobacterial postinfective arthropathy870274001
- Postinfective arthropathy following infection caused by Mycobacterium870274001
- Granuloma of spinal cord caused by Mycobacterium870340002
- Mycobacterial spinal cord granuloma870340002
- Bacterial spinal cord granuloma870343000
- Granuloma of spinal cord caused by bacterium870343000
- Gastritis caused by Mycobacterium1163498006
- Mycobacterial gastritis1163498006
- Abscess of spinal cord caused by Mycobacterium1176992006
- Mycobacterial spinal cord abscess1176992006
- Acid-fast bacteria present436531000124105
UMLS
- ATYPICAL MYCOBACT INFECTC0026919
- Atypical Mycobacterium InfectionC0026919
- Atypical Mycobacterium InfectionsC0026919
- Atypical mycobacterial diseaseC0026919
- Atypical mycobacterial infectionC0026919
- Atypical mycobacterial infection (disorder)C0026919
- Atypical mycobacterial infection NOSC0026919
- Atypical mycobacterial infectionsC0026919
- INFECT ATYPICAL MYCOBACTC0026919
- Infection due to non-TB (tuberculous) mycobacteriaC0026919
- Infections, Atypical MycobacteriumC0026919
- MYCOBACT INFECT ATYPICALC0026919
- Mycobacterial infection (excluding tuberculosis AND leprosy)C0026919
- Mycobacterial infection (excluding tuberculosis AND leprosy) (disorder)C0026919
- Mycobacterium Infection, AtypicalC0026919
- Mycobacterium Infection, NontuberculousC0026919
- Mycobacterium Infections, AtypicalC0026919
- Mycobacterium Infections, NontuberculousC0026919
- Nontuberculous Mycobacterium InfectionC0026919
- Nontuberculous Mycobacterium InfectionsC0026919
- atypical infections mycobacterialC0026919
- atypical mycobacterial diseaseC0026919
- atypical mycobacterial infectionC0026919
- mycobacterium infection atypicalC0026919
- INFECT MYCOBACTC0026918
- Infection due to mycobacteriaC0026918
- Infection, MycobacteriumC0026918
- Infections, MycobacteriumC0026918
- MYCOBACT INFECTC0026918
- Mycobacterial InfectionC0026918
- Mycobacterial InfectionsC0026918
- Mycobacterial diseaseC0026918
- Mycobacterial infectionC0026918
- Mycobacterial infection NOSC0026918
- Mycobacterial infection, unspecifiedC0026918
- Mycobacterial infectionsC0026918
- MycobacteriosisC0026918
- Mycobacteriosis (disorder)C0026918
- Mycobacteriosis NOSC0026918
- Mycobacterium InfectionC0026918
- Mycobacterium InfectionsC0026918
- infections mycobacterialC0026918
- mycobacterial diseaseC0026918
- mycobacterial infectionC0026918
- mycobacteriosisC0026918
- mycobacterium infectionC0026918
Clinical Terms
- Infections, Mycobacterium
- Atypical mycobacterial infections
- Mycobacterium Infection
- Mycobacteriosis
- Mycobacterial infection, atypical
- Mycobacteriosis with acquired immunodeficiency syndrome
- infections mycobacterial
- Mycobacterial disease
- Nontuberculous Mycobacterium Infection
- Arthropathy associated with bacterial disease
- Abscess of spinal cord caused by bacterium
- Mycobacteria, hand, atypical
- Mycobacterial keratitis
- Mycobacterial infection (excluding tuberculosis AND leprosy)
- Mycobacterial postinfective arthropathy
- Bacterial spinal epidural abscess
- atypical mycobacterial infection
- Abscess of spinal epidural space caused by bacterium
- Postinfective arthropathy following infection caused by Mycobacterium
- Infections, Atypical Mycobacterium
- Infection caused by Mycobacterium resistant to multiple antimycobacterial agents
- Mycobacterial infection (excluding tuberculosis AND leprosy) (disorder)
- atypical infections mycobacterial
- Intraspinal extradural abscess
- mycobacterium infection atypical
- Mycobacterium Infections
- Nontuberculous Mycobacterium Infections
- Left mycobacterial keratitis
- Infection caused by Mycobacterium abscessus
- Keratitis, mycobacteria
- Mycobacterium Infection, Atypical
- Granuloma of spinal cord caused by bacterium
- MYCOBACT INFECT ATYPICAL
- Mycobacterium Infections, Atypical
- INFECT ATYPICAL MYCOBACT
- Abscess of spinal cord caused by Mycobacterium
- Atypical mycobacterial disease
- Mycobacterial infections
- Mycobacterial spinal cord abscess
- Mycobacteriosis with AIDS (acquired immunodeficiency syndrome)
- Mycobacterial spinal cord granuloma
- Acid-fast bacteria present
- Right mycobacterial keratitis
- Mycobacterium Infection, Nontuberculous
- MYCOBACT INFECT
- Granuloma of spinal cord caused by Mycobacterium
- Mycobacteriosis NOS
- Disseminated atypical infection caused by Mycobacterium co-occurrent with human immunodeficiency virus infection
- Infection due to non-TB (tuberculous) mycobacteria
- Extradural intraspinal abscess
- Mycobacterial infection NOS
- Reactive arthritis due to and following mycobacteriosis
- Bacterial spinal cord granuloma
- Infection due to mycobacteria
- Skin and soft tissue atypical mycobacterial infection
- Gastritis caused by Mycobacterium
- Post-bacterial arthropathy
- Mycobacterial reactive arthropathy
- Bilateral mycobacterial keratitis
- Arthritis following mycobacteriosis
- Atypical mycobacterial infection (disorder)
- Mycobacteriosis (disorder)
- Atypical mycobacterial infection of hand
- Disseminated atypical mycobacterial infection
- Mycobacterial postinfective arthritis
- ATYPICAL MYCOBACT INFECT
- Bacterial spinal cord abscess
- Mycobacterial infection of the central nervous system
- Infection, Mycobacterium
- Atypical Mycobacterium Infection
- Atypical Mycobacterium Infections
- Spinal epidural abscess
- Intraspinal epidural abscess
- Spinal extradural abscess
- Mycobacterium Infections, Nontuberculous
- Mycobacterial spinal epidural abscess
- Disseminated mycobacteriosis
- Abscess of spinal epidural space caused by Mycobacterium
- Infection caused by Mycobacteroides abscessus
- Atypical mycobacterial infection NOS
- Mycobacterial gastritis
- INFECT MYCOBACT
Frequently Asked Questions
What is the ICD-10 code for mycobacterial infection, unspecified?
The ICD-10-CM code for mycobacterial infection, unspecified is A31.9. The full clinical description is "Mycobacterial infection, unspecified". A31.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code A31.9 mean?
ICD-10-CM code A31.9 represents “Mycobacterial infection, unspecified”. It is classified under Chapter 1: Certain Infectious and Parasitic Diseases and is a billable/specific code that can be used on a claim.
Is A31.9 a billable code?
Yes, A31.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is A31.9 in?
A31.9 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A31.9?
A31.9 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters.
Are additional codes required with A31.9?
Yes, when using A31.9, also report: resistance to antimicrobial drugs (Z16.-).
What SNOMED CT codes does A31.9 map to?
A31.9 maps to 25 SNOMED CT concepts: 1176992006, 721250007, 838388009, 838391009, 436531000124105, and 20 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for A31.9?
A31.9 is linked to 2 UMLS Concept Unique Identifiers: C0026919, C0026918. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does A31.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like mycobacterial infection, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of A31.9?
A31.9 maps to the ICD-11 code: 1H0Z (Infection, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.