N91.1

Secondary amenorrhea

Billable / specific

N91.1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Excludes1

Not coded here — never report together with this code.

  • ovarian dysfunction (E28.-) (from N91)

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from N91)
  • certain infectious and parasitic diseases (A00-B99) (from N91)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from N91)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) (from N91)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from N91)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from N91)
  • neoplasms (C00-D49) (from N91)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from N91)

Also known as

  • Amenorrhea, secondary

Parent code

  • N91Absent, scanty and rare menstruationHeader

Related codes

  • N91.0Primary amenorrheaBillable
  • N91.2Amenorrhea, unspecifiedBillable
  • N91.3Primary oligomenorrheaBillable
  • N91.4Secondary oligomenorrheaBillable
  • N91.5Oligomenorrhea, unspecifiedBillable

Browse