ICD-10-CM 2027 diagnosis code

B77.8Ascariasis with other complications

Not billable — use a more specific code

B77.8 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About B77.8

B77.8 is the ICD-10-CM diagnosis code for Ascariasis with other complications. It belongs to category B77 (Ascariasis), block B65-B83 (helminthiases) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within B77, choose B77.8 (with other complications) only when documentation doesn't support a more specific option: with intestinal complications (B77.0) and unspecified (B77.9).

To report this condition, pick the subcode that matches the documentation: B77.81 (pneumonia) and B77.89 (complications).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under B77.8

Notes that apply from higher levels

Instructions written at a parent level also apply to B77.8.

› From B77 Ascariasis

Includes

ascaridiasis
roundworm infection

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about B77.8

Is B77.8 billable?: No. B77.8 is a header code. Report one of its more specific subcodes instead.