Header code
The FY2027 order file has 98,403 codes. Subtracting the 74,879 billable codes leaves the codes that are headers or otherwise not billable.
Source: CDC ICD-10-CM FY2027 order file, dated June 16, 2026.
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Definition
Header code
A header code in ICD-10-CM groups more specific codes under a category or subcategory. The order file does not mark it billable, so it is not reported alone on a claim. The more specific child codes are the ones the file marks billable. The lookup is at /icd-10.
Questions
Header code, answered
Can a header code stand on a claim by itself?
No. The order file does not mark a header code billable. A more specific code is required when one exists.