Absent, scanty and rare menstruation - N91

 Type 1 Excludes

• ovarian dysfunction (E28.-)

 Codes

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