B66.4Billable

Paragonimiasis

Chapter
1. Certain infectious and parasitic diseases
Category
B66
Effective date
October 1, 2026

Related codes in category B66

B66Other fluke infectionsB66.0OpisthorchiasisYesB66.1ClonorchiasisYesB66.2DicroceliasisYesB66.3FascioliasisYesB66.5FasciolopsiasisYesB66.8Other specified fluke infectionsYesB66.9Fluke infection, unspecifiedYes

Frequently asked questions

What is ICD-10 code B66.4?

B66.4 is an ICD-10-CM diagnosis code for Paragonimiasis.

Is B66.4 a billable code?

Yes. B66.4 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is B66.4 in?

B66.4 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B66.4 become effective?

B66.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B66.4?

B66.4 belongs to category B66, which includes 8 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.