2018 ICD-10-CM Diagnosis Code N91.5

Oligomenorrhea, unspecified

ICD-10-CM Coding Rules
Applicable To
  • Hypomenorrhea NOS
The following code(s) above N91.5 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N91.5:
  • N00-N99
    2018 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the genitourinary system
  • N91
    ICD-10-CM Diagnosis Code N91

    Absent, scanty and rare menstruation

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • ovarian dysfunction (E28.-)
    Absent, scanty and rare menstruation
Approximate Synonyms Clinical Information ICD-10-CM N91.5 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert N91.5 to ICD-9-CM

Code History
Code annotations containing back-references to N91.5:

Diagnosis Index entries containing back-references to N91.5:

ICD-10-CM Codes Adjacent To N91.5
N90.813 Female genital mutilation Type III status
N90.818 Other female genital mutilation status
N90.89 Other specified noninflammatory disorders of vulva and perineum
N90.9 Noninflammatory disorder of vulva and perineum, unspecified
N91 Absent, scanty and rare menstruation
N91.0 Primary amenorrhea
N91.1 Secondary amenorrhea
N91.2 Amenorrhea, unspecified
N91.3 Primary oligomenorrhea
N91.4 Secondary oligomenorrhea
N91.5 Oligomenorrhea, unspecified
N92 Excessive, frequent and irregular menstruation
N92.0 Excessive and frequent menstruation with regular cycle
N92.1 Excessive and frequent menstruation with irregular cycle
N92.2 Excessive menstruation at puberty
N92.3 Ovulation bleeding
N92.4 Excessive bleeding in the premenopausal period
N92.5 Other specified irregular menstruation
N92.6 Irregular menstruation, unspecified
N93 Other abnormal uterine and vaginal bleeding
N93.0 Postcoital and contact bleeding

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.