B77Header code — not billable

Ascariasis

Chapter
1. Certain infectious and parasitic diseases
Category
B77
Effective date
October 1, 2026

Related codes in category B77

B77.0Ascariasis with intestinal complicationsYesB77.8Ascariasis with other complicationsB77.81Ascariasis pneumoniaYesB77.89Ascariasis with other complicationsYesB77.9Ascariasis, unspecifiedYes

Frequently asked questions

What is ICD-10 code B77?

B77 is an ICD-10-CM diagnosis code for Ascariasis.

Is B77 a billable code?

No. B77 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is B77 in?

B77 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B77 become effective?

B77 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B77?

B77 belongs to category B77, which includes 5 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.