Is W49.01 a billable code?
No. W49.01 is a header code that groups 0 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
W49.01: Hair causing external constriction
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
W49.01 groups related diagnoses under hair causing external constriction. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
W49.01 questions
What does W49.01 mean?
W49.01 is the ICD-10-CM code for Hair causing external constriction. It is in chapter 21, External causes of morbidity (V00-Y99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.