A00.1

What This Code Means

This is a severe bacterial infection caused by a specific strain of cholera bacteria (Vibrio cholerae 01, biovar eltor) that causes severe diarrhea and dehydration. This particular strain is responsible for most modern cholera outbreaks worldwide.

Coding Tips

• •Ensure documentation specifies the biovar eltor strain; if only 'cholera' is documented without biovar specification, use A00.9 instead
• •This code requires a seventh character for episode of care (A=initial encounter, D=subsequent encounter, S=sequela); verify the appropriate character is appended