2024 ICD-10-CM Diagnosis Code K63.821

Small intestinal bacterial overgrowth

  • K63.821 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • ICD-10-CM K63.821 is a new 2024 ICD-10-CM code that became effective on October 1, 2023.
  • This is the American ICD-10-CM version of K63.821 – other international versions of ICD-10 K63.821 may differ.

The following code(s) above K63.821 contain annotation back-references

 that may be applicable to K63.821:

  • K00-K95  Diseases of the digestive system

Code History

  • 2024 (effective 10/1/2023): New code