ICD10BillableValid for clinical use

ICD-10 Code B74.9: Filariasis, unspecified

B74.9 is a billable ICD-10 diagnosis code used to classify Filariasis, unspecified in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. 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).

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

Coverage-related procedures and services

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
B74.9

Common synonyms

Filariasis, unspecifiedFilariasis

Frequently asked questions

Code details

CodeB74.9
SystemICD10
Display nameFilariasis, unspecified
ChapterCertain infectious and parasitic diseases (A00-B99)
BlockHelminthiases

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Arthritis, arthritic(acute) (chronic) (nonpyogenic) (subacute)Arthritis, arthritic(acute) (chronic) (nonpyogenic) (subacute)Chylocele(nonfilarial)Chylocele(nonfilarial)Chylothorax(nonfilarial)Conjunctivitis(staphylococcal) (streptococcal)NOSConjunctivitis(staphylococcal) (streptococcal)NOSConjunctivitis(staphylococcal) (streptococcal)NOSEpididymitis(acute) (nonvenereal) (recurrent) (residual)Hydrothorax(double) (pleura)InfestationInfestation
See also
category M01Infestation, filarial

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.

ICD-10 Code B74.9 for Filariasis, unspecified | HealthAssure