A39.50 vs I52
A39.50 (Meningococcal carditis, unspecified) compared with I52 (Other heart 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. I52 carries an Excludes1 note covering A39.50: “meningococcal infection (A39.50)”
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
| A39.50Meningococcal carditis, unspecified | I52Other heart 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 | Meningococcal carditis, unspecified is a billable ICD-10-CM diagnosis code (A39.50). | Other heart disorders in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (I52). |
| Code first | — | underlying disease, such as: congenital syphilis (A50.5) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources