N91
Non-billableAbsent, scanty and rare menstruation
N91 is the ICD-10-CM code for Absent, scanty and rare menstruation. It is a non-billable category code — use a more specific child code such as N91.0 for billing.
- Status
- Header (non-billable)
- Chapter
- N00-N99
- Subcodes
- 6
- Edition
- FY2026
N00-N99 Diseases of the genitourinary system
Excludes1 — not coded here
- •ovarian dysfunction (E28.-)
Frequently asked questions
- What is ICD-10 code N91?
- N91 is the ICD-10-CM code for "Absent, scanty and rare menstruation". It falls under N00-N99 Diseases of the genitourinary system.
- Is N91 a billable code?
- No — N91 is a non-billable header code. Use a more specific child code (such as N91.0) for billing.
- What is excluded from N91?
- Excludes1 (not coded here): ovarian dysfunction (E28.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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