Valid for Submission
A42.9 is a billable diagnosis code used to specify a medical diagnosis of actinomycosis, unspecified. The code A42.9 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code A42.9 might also be used to specify conditions or terms like actinomycotic infection, infection caused by actinomycetales or infection caused by tropheryma.
Unspecified diagnosis codes like A42.9 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.
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 A42.9 are found in the index:
- - Actinomycosis, actinomycotic - A42.9
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Actinomycotic infection
- Infection caused by Actinomycetales
- Infection caused by Tropheryma
- ACTINOMYCOSIS-. infections with bacteria of the genus actinomyces.
- ACTINOMYCOSIS CERVICOFACIAL-. a form of actinomycosis characterized by slow growing inflammatory lesions of the lymph nodes that drain the mouth lumpy jaw reddening of the overlying skin and intraperitoneal abscesses.
Diagnostic Related Groups - MS-DRG Mapping
Convert A42.9 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code A42.9 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most bacteria won't hurt you - less than 1 percent of the different types make people sick. Many are helpful. Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.
But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.
Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.
NIH: National Institute of Allergy and Infectious Diseases
- Actinomycosis (Medical Encyclopedia)
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