U.S. ICD-10-CM · FY 2027

A79.81 ICD-10-CM Code: Rickettsiosis due to Ehrlichia sennetsu

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

Code definition

Official description

A79.81

Rickettsiosis due to Ehrlichia sennetsu

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

Classification

Where A79.81 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Rickettsioses (A75-A79)

  3. 3

    Category A79

    Other rickettsioses

  4. 4

    Subcategory A79.8

    Other specified rickettsioses

  5. 5

    Code A79.81

    Rickettsiosis due to Ehrlichia sennetsu

Documentation details

Notes for this code

Inclusion terms

  • Rickettsiosis due to Neorickettsia sennetsu

Code first

No “code first” instruction is listed for A79.81.

Use additional code

No “use additional code” instruction is listed for A79.81.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for A79.81.

Excludes2

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

No Excludes2 note is listed for A79.81.

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 A79.81 mean?

A79.81 is the FY 2027 U.S. ICD-10-CM code for “Rickettsiosis due to Ehrlichia sennetsu.”

Is A79.81 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, A79.81 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 A79.81 located in ICD-10-CM?

A79.81 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Rickettsioses (A75-A79) (A75–A79), under category A79, Other rickettsioses and subcategory A79.8, Other specified rickettsioses.

What coding notes are listed for A79.81?

Its listed inclusion terms are Rickettsiosis due to Neorickettsia sennetsu. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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