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  6. 2024 ICD-10-CM Code K63.821

2024 ICD-10-CM Diagnosis Code K63.821

Small intestinal bacterial overgrowth

ICD-10-CM Code:
K63.821
ICD-10 Code for:
Small intestinal bacterial overgrowth
Is Billable?
Not Valid for Submission
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Code Classification

  • Diseases of the digestive system
    (K00–K95)
    • Other diseases of intestines
      (K55-K64)
      • Other diseases of intestine
        (K63)

K63.821 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of small intestinal bacterial overgrowth. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Small intestinal bacterial overgrowth

Non-specific codes like K63.821 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for small intestinal bacterial overgrowth:

  • Use K63.8211 for hydrogen-subtype - BILLABLE CODE

  • Use K63.8212 for hydrogen sulfide-subtype - BILLABLE CODE

  • Use K63.8219 for unspecified - BILLABLE CODE

New 2024 ICD-10-CM Code

K63.821 is new to ICD-10-CM code set for the FY 2024, effective October 1, 2023. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2023. This is a new and revised code for the FY 2024 (October 1, 2023 - September 30, 2024).

Code History

  • FY 2024 - Code Added, effective from 10/1/2023 through 9/30/2024