A01.2

What This Code Means

Paratyphoid fever B is a bacterial infection caused by Salmonella paratyphi B that causes fever, abdominal pain, and diarrhea, similar to but typically milder than typhoid fever. It is spread through contaminated food or water.

Coding Tips

• •Ensure the documentation specifies paratyphoid fever type B (not type A or C) before assigning this code, as each type has a distinct ICD-10-CM code
• •This code includes the infection itself; if complications such as sepsis or organ involvement are documented, assign additional codes for those conditions