ICD-10-CM Codes
A00-B99
A30-A49
A42-
2023 ICD-10-CM Diagnosis Code A42.1

2023 ICD-10-CM Diagnosis Code A42.1

Abdominal actinomycosis

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

A42.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM A42.1 became effective on October 1, 2022.
This is the American ICD-10-CM version of A42.1 - other international versions of ICD-10 A42.1 may differ.

The following code(s) above A42.1 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to A42.1:

A00-B99
2023 ICD-10-CM Range A00-B99
Certain infectious and parasitic diseases
Includes
- diseases generally recognized as communicable or transmissible
Type 1 Excludes
- certain localized infections - see body system-related chapters
Type 2 Excludes
- carrier or suspected carrier of infectious disease (Z22.-)
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional
- code to identify resistance to antimicrobial drugs (Z16.-)
Certain infectious and parasitic diseases
A42
ICD-10-CM Diagnosis Code A42
Actinomycosis
Type 1 Excludes
- actinomycetoma (B47.1)
Actinomycosis

Approximate Synonyms

Actinomycosis infection of abdomen

ICD-10-CM A42.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

371 Major gastrointestinal disorders and peritoneal infections with mcc
372 Major gastrointestinal disorders and peritoneal infections with cc
373 Major gastrointestinal disorders and peritoneal infections without cc/mcc
974 Hiv with major related condition with mcc
975 Hiv with major related condition with cc
976 Hiv with major related condition without cc/mcc

Convert A42.1 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to A42.1:

Actinomycosis, actinomycotic A42.9
ICD-10-CM Diagnosis Code A42.9
Actinomycosis, unspecified
- abdominal A42.1
- gastrointestinal A42.1

ICD-10-CM Codes Adjacent To A42.1

A41.51 Sepsis due to Escherichia coli [E. coli]

A41.52 Sepsis due to Pseudomonas

A41.53 Sepsis due to Serratia

A41.59 Other Gram-negative sepsis

A41.8 Other specified sepsis

A41.81 Sepsis due to Enterococcus

A41.89 Other specified sepsis

A41.9 Sepsis, unspecified organism

A42 Actinomycosis

A42.0 Pulmonary actinomycosis

A42.1 Abdominal actinomycosis

A42.2 Cervicofacial actinomycosis

A42.7 Actinomycotic sepsis

A42.8 Other forms of actinomycosis

A42.81 Actinomycotic meningitis

A42.82 Actinomycotic encephalitis

A42.89 Other forms of actinomycosis

A42.9 Actinomycosis, unspecified

A43 Nocardiosis

A43.0 Pulmonary nocardiosis

A43.1 Cutaneous nocardiosis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code A42.1

Abdominal actinomycosis

Certain infectious and parasitic diseases

Actinomycosis

Actinomycosis, unspecified