All ICD10 Codes

A42

Non-Billable
ChapterA00–B99
Rankcategory
Official Description

Actinomycosis

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
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

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

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A42:

chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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