Is N91 a billable code?
No. N91 is a header code that groups 6 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
N91: Absent, scanty and rare menstruation
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
N91 groups related diagnoses under absent, scanty and rare menstruation. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
N91 questions
What does N91 mean?
N91 is the ICD-10-CM code for Absent, scanty and rare menstruation. It is in chapter 14, Diseases of the genitourinary system (N00-N99).
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.