A01.1 is a billable and specific ICD-10-CM code. Accurate coding of A01.1 is essential for ensuring effective patient care and facilitating appropriate reimbursement.
This guide provides detailed insights into its application, official guidelines, and historical background.
ICD-10-CM Diagnosis Code for Paratyphoid fever A
A01.1 is the ICD-10-CM Diagnosis code for Paratyphoid Fever A.
It is a bacterial infection caused by Salmonella paratyphi A, typically spread through contaminated food or water.
Proper documentation using A04.3 ensures patients receive appropriate care and enables accurate healthcare reimbursement.
Synonyms for Paratyphoid Fever A (A01.1):
- Paratyphoid infection due to Salmonella paratyphi A
- Enteric fever due to Salmonella paratyphi A
- Type A paratyphoid fever
History Background of ICD-10-CM Diagnosis Code A01.1
The ICD-9-CM system, first introduced in 1979, provided the initial framework for coding diseases and health-related conditions in the United States.
The ICD-9-CM Diagnosis code for Paratyphoid Fever A is 002.1. This coding remained consistent from 1979 to 2015.
While the ICD-9-CM system offered a basic approach to disease classification, modern healthcare needs more detail and specificity.
To address this, the ICD-10-CM system was launched in 2015, introducing a more comprehensive and accurate coding structure.
The transition from ICD-9-CM to ICD-10-CM significantly improved the ability to document.
The 2025 edition of ICD-10-CM A04.3 became effective on October 1, 2024.
| Year | Code | Description |
| 2020 | A01.1 | No Change |
| 2021 | A01.1 | No Change |
| 2022 | A01.1 | No Change |
| 2023 | A01.1 | No Change |
| 2024 | A01.1 | No Change |
| 2025 | A01.1 | No Change |
Symptoms of Paratyphoid Fever A:
- Persistent high fever
- Abdominal pain and discomfort
- Diarrhea or constipation
- Headache and weakness
- Loss of appetite and nausea
- Enlarged spleen (splenomegaly)
- Rose-colored spots on the chest or abdomen
How Paratyphoid Fever A is Caused
- Eating food or drinking water contaminated with harmful bacteria (Salmonella paratyphi A).
- Poor hygiene, such as not washing hands properly after using the restroom.
- Living in or traveling to areas with dirty water or poor sanitation systems
Other ICD-10-CM Diagnosis Codes in A01
ICD-10-CM code A01 | Typhoid and Paratyphoid Fevers has following sub categories including A01.1 :
- A01 Typhoid and paratyphoid fevers
- A01.0 Typhoid fever
- A01.00 unspecified
- A01.01 Typhoid meningitis
- A01.02 …… with heart involvement
- A01.03 Typhoid pneumonia
- A01.04 Typhoid arthritis
- A01.05 Typhoid osteomyelitis
- A01.09 with other complications
- A01.1 Paratyphoid fever A
- A01.2 Paratyphoid fever B
- A01.3 Paratyphoid fever C
- A01.4 Paratyphoid fever, unspecified
Final Thoughts
Proper coding of A01.1 is crucial for ensuring accurate documentation and efficient reimbursement processes. Medical billers and coders must thoroughly understand its causes, symptoms, and historical context. This code remains vital in managing cholera diagnoses, especially in cases where the specific strain cannot be identified.
