2026
ICD-10-CM
Diagnosis
Code

N91 Absent, scanty and rare menstruation

  • Non-billable
  • 2016–2026

N91 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Absent, scanty and rare menstruation.

Type 1 excludes

  • Ovarian dysfunction (E28.-)

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