U.S. ICD-10-CM · FY 2027

A31.0 ICD-10-CM Code: Pulmonary mycobacterial infection

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

Code definition

Official description

A31.0

Pulmonary mycobacterial infection

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

Classification

Where A31.0 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Other bacterial diseases (A30-A49)

  3. 3

    Category A31

    Infection due to other mycobacteria

  4. 4

    Code A31.0

    Pulmonary mycobacterial infection

Documentation details

Notes for this code

Inclusion terms

  • Infection due to Mycobacterium avium
  • Infection due to Mycobacterium intracellulare [Battey bacillus]
  • Infection due to Mycobacterium kansasii

Code first

No “code first” instruction is listed for A31.0.

Use additional code

No “use additional code” instruction is listed for A31.0.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for A31.0.

Excludes2

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

No Excludes2 note is listed for A31.0.

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 A31.0 mean?

A31.0 is the FY 2027 U.S. ICD-10-CM code for “Pulmonary mycobacterial infection.”

Is A31.0 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, A31.0 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 A31.0 located in ICD-10-CM?

A31.0 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Other bacterial diseases (A30-A49) (A30–A49), under category A31, Infection due to other mycobacteria.

What coding notes are listed for A31.0?

Its listed inclusion terms are Infection due to Mycobacterium avium; Infection due to Mycobacterium intracellulare [Battey bacillus]; Infection due to Mycobacterium kansasii. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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