A01.02 vs I39
A01.02 (Typhoid fever with heart involvement) compared with I39 (Endocarditis and heart valve disorders 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. I39 carries an Excludes1 note covering A01.02: “typhoid fever (A01.02)”
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
| A01.02Typhoid fever with heart involvement | I39Endocarditis and heart valve disorders in diseases classified elsewhere | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Typhoid fever with heart involvement is a billable ICD-10-CM diagnosis code (A01.02). | Endocarditis and heart valve disorders in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (I39). |
| Includes | Typhoid endocarditis Typhoid myocarditis | — |
| 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