All ICD10 Codes
A42Non-billable

Actinomycosis

Certain Infectious and Parasitic Diseases·Other bacterial diseases (A30-A49)·category·FY 2026

Use a more specific code (5 billable, 1 non-billable)
A42.0Pulmonary actinomycosisA42.1Abdominal actinomycosisA42.2Cervicofacial actinomycosisA42.7Actinomycotic sepsisA42.8Other forms of actinomycosishas subcodesA42.9Actinomycosis, unspecified

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here. Use a different code.)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here. Code separately if applicable.)
  • 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
  • code to identify resistance to antimicrobial drugs (Z16.-)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

Clinical Hierarchy

BillableHas subcodes
CH1Certain infectious and parasitic diseases (A00-B99)
A30-A49Other bacterial diseases (A30-A49)
A42ActinomycosisNot billable
A42.0Pulmonary actinomycosisBillable
A42.1Abdominal actinomycosisBillable
A42.2Cervicofacial actinomycosisBillable
A42.7Actinomycotic sepsisBillable
A42.8Other forms of actinomycosisSubcodes
A42.9Actinomycosis, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.