A43 ICD-10-CM Code: Nocardiosis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
A43Nocardiosis
ICD-10-CM diagnosis code · United States clinical modification
Where A43 sits
- 1
Chapter 1
Certain infectious and parasitic diseases (A00-B99)
- 2
Section
Other bacterial diseases (A30-A49)
- 3
Category A43
Nocardiosis
- 4
Code A43
Nocardiosis
Codes under A43
A43 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for A43.
Code first
No “code first” instruction is listed for A43.
Use additional code
No “use additional code” instruction is listed for A43.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for A43.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for A43.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code A43 mean?
A43 is the FY 2027 U.S. ICD-10-CM code for “Nocardiosis.”
Is A43 a billable or specific ICD-10-CM code?
No. A43 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is A43 located in ICD-10-CM?
A43 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Other bacterial diseases (A30-A49) (A30–A49), under category A43, Nocardiosis.
What coding notes are listed for A43?
No inclusion terms are listed for A43 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.