N91

Non-Billable

Absent, scanty and rare menstruation

N91 should not be used for reimbursement purposes as there are multiple sub-diagnoses that fall under this code. Please refer to the sub-diagnoses below.

Related Diagnoses

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