ICD-10-CM 2027
ICD-10 code for bacterial overgrowth
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Overgrowth › bacterial”. Page updated September 29, 2026.
About coding bacterial overgrowth
The official ICD-10-CM index doesn't give a single default code for bacterial overgrowth; the code depends on the details below.
More specific bacterial overgrowth codes (official index)
Common questions about bacterial overgrowth ICD-10 codes
What is the ICD-10 code for small intestinal bacterial overgrowth?
- K63.8219 — Small intestinal bacterial overgrowth, unspecified.