Question:
What qualifier do I use for ICD-10 diagnosis codes on electronic claims?
Answer:
The following answer to that question comes directly from the Centers for Medicare & Medicaid Services (CMS) (FAQ12889).
For X12 837P 5010A1 claims, the HI01-1 field for the Code List Qualifier Code must contain the code “ABK” to indicate the principal ICD-10 diagnosis code being sent. When sending more than one diagnosis code, use the qualifier code “ABF” for the Code List Qualifier Code to indicate up to 11 additional ICD-10 diagnosis codes that are sent.
For X12 837I 5010A1 claims, the HI01-1 field for the Principal Diagnosis Code List Qualifier Code must contain the code “ABK” to indicate the principal ICD-10 diagnosis code being sent. When sending more than one diagnosis code, use the qualifier code “ABF” for each Other Diagnosis Code to indicate up to 24 additional ICD-10 diagnosis codes that are sent.
For NCPDP D.0 claims, in the 492.WE field for the Diagnosis Code Qualifier, use the code “02” to indicate an ICD-10 diagnosis code is being sent.