B42Header code — not billable

Sporotrichosis

Chapter
1. Certain infectious and parasitic diseases
Category
B42
Effective date
October 1, 2026

Related codes in category B42

B42.0Pulmonary sporotrichosisYesB42.1Lymphocutaneous sporotrichosisYesB42.7Disseminated sporotrichosisYesB42.8Other forms of sporotrichosisB42.81Cerebral sporotrichosisYesB42.82Sporotrichosis arthritisYesB42.89Other forms of sporotrichosisYesB42.9Sporotrichosis, unspecifiedYes

Frequently asked questions

What is ICD-10 code B42?

B42 is an ICD-10-CM diagnosis code for Sporotrichosis.

Is B42 a billable code?

No. B42 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 B42 in?

B42 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B42 become effective?

B42 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B42?

B42 belongs to category B42, 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.