K63.8212
BillableSmall intestinal bacterial overgrowth, hydrogen sulfide-subtype
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
An overgrowth of hydrogen sulfide-producing bacteria in the small intestine causing digestive symptoms including bloating, gas, and changes in bowel movements.
Coding Tips
- •Requires documentation of SIBO testing confirming hydrogen sulfide-subtype
- •Note the characteristic rotten egg-like odor if documented in clinical notes
Code Hierarchy
└K63Other diseases of intestine└K63.8Other specified diseases of intestine└K63.82Intestinal microbial overgrowth└K63.821Small intestinal bacterial overgrowth└K63.8212Small intestinal bacterial overgrowth, hydrogen sulfide-subtype
└K63.8212Small intestinal bacterial overgrowth, hydrogen sulfide-subtype