ICD-10-CM N91: Absent, scanty and rare menstruation

ICD-10-CM Diagnosis Code (2025)

Official Description for N91

Absent, scanty and rare menstruation

Coding Notes & Guidelines for N91

Excludes1: Not Coded Here

ovarian dysfunction (E28.-)

Inclusion Terms

Hypomenorrhea NOS

Child Codes (More Specific Codes for N91):

N91.0 - Primary amenorrhea N91.1 - Secondary amenorrhea N91.2 - Amenorrhea, unspecified N91.3 - Primary oligomenorrhea N91.4 - Secondary oligomenorrhea N91.5 - Oligomenorrhea, unspecified

About ICD-10-CM Code N91 (Absent)

ICD-10-CM code N91 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM N91 became effective on October 1, 2024.

This page provides detailed information about N91 - Absent, scanty and rare menstruation. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Absent related to scanty and rare menstruation.