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Compare/A15 vs A31

A15 vs A31

A15 (Respiratory tuberculosis) compared with A31 (Infection due to other mycobacteria), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. A31 carries an Excludes2 note covering A15: “tuberculosis (A15-A19)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

A15Respiratory tuberculosisA31Infection due to other mycobacteria
Billing statusNon-billable header

Report instead: A15.0, A15.4, A15.5, A15.6, A15.7

Non-billable header

Report instead: A31.0, A31.1, A31.2, A31.8, A31.9

ClassificationA00-B99 — Certain Infectious and Parasitic Diseases (A00-B99)A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99)
DefinitionRespiratory tuberculosis is a non-billable ICD-10-CM category code (A15).Infection due to other mycobacteria is a non-billable ICD-10-CM category code (A31).
Includes
infections due to Mycobacterium tuberculosis and Mycobacterium bovis
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Use additional code
code, if applicable, for associated cachexia (E88.A)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources