Babesiosis v1

Query purpose: 

Created by the CDC National Syndromic Surveillance Program (NSSP) for use with emergency department data to develop queries for all National Notifiable Diseases defined by the National Notifiable Disease Surveillance System (NNDSS). While the disease queries refer to the NNDSS case definition, the queried data may not align with what is classified as a case in NNDSS. This query is intended to be a version 1 and may be further improved upon by the NSSP community of practice in the future. This query is intended to be narrow and capture visits with specific terms to support greater monitoring and actionable public health data. More complex and/or broader queries may exist that more broadly capture symptoms or travel-based terms.

How it was developed: 

1. The CDC team used the NNDSS case definition of babesiosis to identify diagnostic codes (International Classification of Diseases, 9th & 10th Revisions (ICD-9-CM, ICD-10-CM), SNOMED Clinical Terms (CT)) and chief complaint free text for syndrome development.
2. The codes and free text were then categorized as inclusion or exclusion terms. These terms were formatted for querying in ESSENCE.
3. Text analysis was conducted on the initial query to find additional inclusion or exclusion terms.
4. The query was cross-checked internally at NSSP and by CDC subject matter experts as needed.

How it works:

The Chief Complaint Discharge Diagnosis (CCDD) parsed field is used to query both the discharge diagnosis codes and chief complaint free text, and exclusions are incorporated as necessary.

• Inclusion based on babesiosis chief complaint free text terms:
  • The visit is included if it contains:
    1. A chief complaint related to disease name – (“babesio”) OR
    2. A chief complaint related to disease agent – (“babesia”) OR
• Inclusion based on ICD-10 discharge diagnosis codes related to babesiosis:
  • The visit is included if it contains:
    1. A discharge diagnosis code for Babesiosis – (B60.0) OR
• Inclusion based on SNOMED discharge diagnosis codes related to babesiosis:
  • The visit is included if it contains:
    1. A discharge diagnosis code for Babesiosis – (21061004) OR
    2. A discharge diagnosis code for other conditions caused by Babesiosis – (24620004) OR
    3. A discharge diagnosis code for the presence of Babesia – (35029001) OR
    4. A discharge diagnosis code for an infection caused by Babesia – (83937008 or 73908004 or 51613008 or 877043181000119101)
• There are no exclusions in this query.