ICD-10-CM · Chapter 14 · N00–N99
N91
Absent, scanty and rare menstruation
Diseases of the genitourinary system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- N91
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 14 — Diseases of the genitourinary system
- Category
- N91
- Specificity
- 3 characters
How coders use this code
ICD-10-CM N91 is a category (header) for absent, scanty and rare menstruation. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in N91
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