B83.4 vs B88.3
B83.4 (Internal hirudiniasis) compared with B88.3 (External hirudiniasis), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. B83.4 carries an Excludes2 note covering B88.3: “external hirudiniasis (B88.3)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. B88.3 carries an Excludes2 note covering B83.4: “internal hirudiniasis (B83.4)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| B83.4Internal hirudiniasis | B88.3External hirudiniasis | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) |
| Definition | Internal hirudiniasis is a billable ICD-10-CM diagnosis code (B83.4). | External hirudiniasis is a billable ICD-10-CM diagnosis code (B88.3). |
| Includes | — | Leech infestation NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources