A01.1

What This Code Means

Paratyphoid fever A is a bacterial infection caused by Salmonella paratyphi A that causes fever, abdominal pain, and diarrhea, similar to but typically milder than typhoid fever. It spreads through contaminated food or water and is more common in developing countries.

Coding Tips

• •Verify the specific paratyphoid type (A, B, or C) is documented in the medical record, as each has a distinct ICD-10-CM code (A01.1, A01.2, A01.3)
• •Document whether this is an initial episode or recurrent infection, and note any complications such as perforation or septicemia, which may require additional codes