U.S. ICD-10-CM · FY 2027

B49 ICD-10-CM Code: Unspecified mycosis

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

B49

Unspecified mycosis

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where B49 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Mycoses (B35-B49)

  3. 3

    Category B49

    Unspecified mycosis

  4. 4

    Code B49

    Unspecified mycosis

Documentation details

Notes for this code

Inclusion terms

  • Fungemia NOS

Code first

No “code first” instruction is listed for B49.

Use additional code

No “use additional code” instruction is listed for B49.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for B49.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for B49.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

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.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code B49 mean?

B49 is the FY 2027 U.S. ICD-10-CM code for “Unspecified mycosis.”

Is B49 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, B49 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is B49 located in ICD-10-CM?

B49 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Mycoses (B35-B49) (B35–B49), under category B49, Unspecified mycosis.

What coding notes are listed for B49?

Its listed inclusion terms are Fungemia NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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