A43.9Billable

Nocardiosis, unspecified

Chapter
1. Certain infectious and parasitic diseases
Category
A43
Effective date
October 1, 2026

Related codes in category A43

A43NocardiosisA43.0Pulmonary nocardiosisYesA43.1Cutaneous nocardiosisYesA43.8Other forms of nocardiosisYes

Frequently asked questions

What is ICD-10 code A43.9?

A43.9 is an ICD-10-CM diagnosis code for Nocardiosis, unspecified.

Is A43.9 a billable code?

Yes. A43.9 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is A43.9 in?

A43.9 falls under Chapter 1: Certain infectious and parasitic diseases.

When did A43.9 become effective?

A43.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to A43.9?

A43.9 belongs to category A43, which includes 4 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.