ICD-10 diagnosis code

A49 Bacterial infection of unspecified site

A49 is the ICD-10 code for Bacterial infection of unspecified site. It is a three-character category divided into 6 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block A30–A49 (Other bacterial diseases) in Chapter I, Certain infectious and parasitic diseases.

Code type: Category (3 characters)
Chapter: I · A00–B99
Classification: WHO ICD-10, 2019 version

What A49 excludes

Conditions that look similar but belong under another code.

bacterial agents as the cause of diseases classified to other chapters B95-B96
chlamydial infection NOS A74.9
meningococcal infection NOS A39.9
rickettsial infection NOS A79.9
spirochaetal infection NOS A69.9

Subcodes of A49

A49 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

A49Bakterieinfektion med ospecificerad lokalisation

DenmarkICD-10-DK

DA49Bakteriel infektion uden angivelse af lokalisation

FinlandICD-10-FI

A49Sijainniltaan määrittämätön bakteeri-infektio

GermanyICD-10-GM

A49Bakterielle Infektion nicht näher bezeichneter Lokalisation

FranceICD-10-FR

A49Infection bactérienne, siège non précisé

NetherlandsICD-10-NL

A49bacteriële infectie van niet gespecificeerde lokalisatie

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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