A22.1 vs J17
A22.1 (Pulmonary anthrax) compared with J17 (Pneumonia in diseases classified elsewhere), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. J17 carries an Excludes1 note covering A22.1: “pneumonia in anthrax (A22.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| A22.1Pulmonary anthrax | J17Pneumonia in diseases classified elsewhere | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | J00-J99 — Diseases of the Respiratory System (J00-J99) |
| Definition | Pulmonary anthrax is a billable ICD-10-CM diagnosis code (A22.1). | Pneumonia in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (J17). |
| Includes | infection due to Bacillus anthracis Inhalation anthrax Ragpicker's disease Woolsorter's disease | — |
| Use additional code | — | code, if applicable, to identify resistance to antimicrobial drugs (Z16.-) |
| Code first | — | underlying disease, such as: Q fever (A78) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources