B74.9
Filariasis, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 6 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 7 never code together
A00-B99chapter
Excludes1
- certain localized infections - see body system-related chapters
Excludes2
- carrier or suspected carrier of infectious disease (Z22.-)Z22.-
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
- infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
- influenza and other acute respiratory infections (J00-J22)J00-J22
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
Index entries leading here 9
- Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
- Chylocele (nonfilarial) I89.8
- Chylothorax (nonfilarial) J94.0
- filarial B74.9
- Hydrothorax (double) (pleura) J94.8
- Infestation B88.9
- Conjunctivitis (staphylococcal) (streptococcal) NOS H10.9
- Epididymitis (acute) (nonvenereal) (recurrent) (residual) N45.1
- filarial B74.9
- Orchitis (gangrenous) (nonspecific) (septic) (suppurative) N45.2
- filarial B74.9
- Mumu B74.9
Alongside this code 6 same parent — B74
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.