ICD10BillableValid for clinical use
ICD-10 Code B74.9: Filariasis, unspecified
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).
When is it used?
- May be used when a clinician documents filariasis, unspecified in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
1Certain infectious and parasitic diseases (A00-B99)
block
B65-B83Helminthiases
category
B74Filariasis
currentB74
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
Infectious Disease SpecialistGeneral Physician
Related codes
Sibling codes
Coverage-related procedures and services
CPT 74177high
COMPUTED TOMOGRAPHY, ABDOMEN AND PELVIS; WITH CONTRAST MATERIAL(S)
Source: CMS coverage guidance
CPT 74176high
COMPUTED TOMOGRAPHY, ABDOMEN AND PELVIS; WITHOUT CONTRAST MATERIAL
Source: CMS coverage guidance
CPT 74178high
COMPUTED TOMOGRAPHY, ABDOMEN AND PELVIS; WITHOUT CONTRAST MATERIAL IN ONE OR BOTH BODY REGIONS, FOLLOWED BY CONTRAST MATERIAL(S) AND FURTHER SECTIONS IN ONE OR BOTH BODY REGIONS
Source: CMS coverage guidance
CPT 74160high
COMPUTED TOMOGRAPHY, ABDOMEN; WITH CONTRAST MATERIAL(S)
Source: CMS coverage guidance
CPT 74150high
COMPUTED TOMOGRAPHY, ABDOMEN; WITHOUT CONTRAST MATERIAL
Source: CMS coverage guidance
CPT 74170high
COMPUTED TOMOGRAPHY, ABDOMEN; WITHOUT CONTRAST MATERIAL, FOLLOWED BY CONTRAST MATERIAL(S) AND FURTHER SECTIONS
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 105706003high
Disease caused by Filarioidea
Source: SNOMED International ICD-10 map
SNOMED_CT 403129004high
Filarial abscess
Source: SNOMED International ICD-10 map
SNOMED_CT 193904008high
Filarial infection of conjunctiva
Source: SNOMED International ICD-10 map
SNOMED_CT 46204008high
Infection by Filaroides
Source: SNOMED International ICD-10 map
SNOMED_CT 240820001high
Lymphatic filariasis
Source: SNOMED International ICD-10 map
SNOMED_CT 342451000119108high
Lymphatic filariasis of left eyelid
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
B74.9
Common synonyms
Filariasis, unspecifiedFilariasis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.