A42.9
BillableActinomycosis, unspecified
Actinomycosis, unspecified
Coding Notes
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
- •actinomycetomaB47.1
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
Related Codes(5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(44)
SNOMED CT
- Actinomycosis11817007
- Actinomycotic infection11817007
- Actinomycetales infection721751007
- Infection caused by Actinomycetales721751007
- Infection caused by Tropheryma721760004
- Tropheryma infection721760004
- Infection caused by Propionibacterium1163501006
- Propionibacterium infection1163501006
- Actinomyces oris or Actinomyces viscosus30721000112104
UMLS
- ACTINOMYCES INFECTC0001261
- Actinomyces InfectionC0001261
- Actinomyces InfectionsC0001261
- ActinomycosesC0001261
- ActinomycosisC0001261
- Actinomycosis, unspecifiedC0001261
- Actinomycotic infectionC0001261
- Actinomycotic infection (disorder)C0001261
- Actinomycotic infection of unspecified siteC0001261
- Actinomycotic infectious disordersC0001261
- INFECT ACTINOMYCESC0001261
- Infection, ActinomycesC0001261
- Infections, ActinomycesC0001261
- actinomyces infectionC0001261
- actinomycosesC0001261
- actinomycosisC0001261
- actinomycotic infectionC0001261
Clinical Terms
- Actinomycotic infection of unspecified site
- Infection caused by Actinomycetales
- Infection caused by Tropheryma
- Actinomycetales infection
- INFECT ACTINOMYCES
- Actinomycotic infectious disorders
- Actinomyces Infections
- Tropheryma infection
- Infection, Actinomyces
- Actinomyces Infection
- Infection caused by Propionibacterium
- Actinomycoses
- actinomycotic infection
- Infections, Actinomyces
- Actinomyces oris or Actinomyces viscosus
- Propionibacterium infection
- Actinomycotic infection (disorder)
- ACTINOMYCES INFECT
Frequently Asked Questions
What is the ICD-10 code for actinomycosis, unspecified?
The ICD-10-CM code for actinomycosis, unspecified is A42.9. The full clinical description is "Actinomycosis, unspecified". A42.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code A42.9 mean?
ICD-10-CM code A42.9 represents “Actinomycosis, 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 A42.9 a billable code?
Yes, A42.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is A42.9 in?
A42.9 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A42.9?
A42.9 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; actinomycetoma (B47.1).
Are additional codes required with A42.9?
Yes, when using A42.9, also report: resistance to antimicrobial drugs (Z16.-).
What SNOMED CT codes does A42.9 map to?
A42.9 maps to 5 SNOMED CT concepts: 30721000112104, 721751007, 11817007, 1163501006, 721760004. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for A42.9?
A42.9 is linked to 1 UMLS Concept Unique Identifier: C0001261. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does A42.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like actinomycosis, 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 A42.9?
A42.9 maps to the ICD-11 code: 1C10.Z (Actinomycosis, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.