A39.52 vs I41
A39.52 (Meningococcal myocarditis) compared with I41 (Myocarditis 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. I41 carries an Excludes1 note covering A39.52: “meningococcal (A39.52)”
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
| A39.52Meningococcal myocarditis | I41Myocarditis 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 | Meningococcal myocarditis is a billable ICD-10-CM diagnosis code (A39.52). | Myocarditis in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (I41). |
| Code first | — | underlying disease, such as: typhus (A75.0-A75.9) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources