ICD-10-CM

ICD-10 code for Fistula (cutaneous) cervical, lateral: Q18.1

The ICD-10-CM index points "Fistula (cutaneous) cervical, lateral" to Q18.1, Preauricular sinus and cyst. Q18.1 is a billable code.

Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page

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