Is N91.1 a billable code?
Yes. N91.1 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
N91.1: Secondary amenorrhea
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
N91.1 is a billable ICD-10-CM diagnosis code for secondary amenorrhea. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with N91.1 already added.Good Faith EstimateStart a cost estimate with N91.1 already added.CMS-1500 Claim FormFill a claim form with N91.1 in box 21.
Other codes in N91 Absent, scanty and rare menstruation
N91.1 questions
What does N91.1 mean?
N91.1 is the ICD-10-CM code for Secondary amenorrhea. 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.