N91.1
BillableSecondary amenorrhea
Secondary amenorrhea
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Related Codes(5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(90)
SNOMED CT
- Dysponderal amenorrhea21669001
- Dysponderal amenorrhoea21669001
- Postpill amenorrhea39931000
- Postpill amenorrhoea39931000
- Physiologic amenorrhea44811000
- Physiologic amenorrhoea44811000
- Pathologic amenorrhea56561006
- Pathologic amenorrhoea56561006
- Dietary amenorrhea57260004
- Dietary amenorrhoea57260004
- Nutritional amenorrhea57260004
- Nutritional amenorrhoea57260004
- Secondary physiologic amenorrhea86030004
- Secondary physiologic amenorrhoea86030004
- Loss of menstrual period156036003
- Periods have stopped156036003
- Secondary amenorrhea156036003
- Secondary amenorrhoea156036003
- Exercise-related amenorrhea237119008
- Exercise-related amenorrhoea237119008
- Hypothalamic amenorrhea237120002
- Hypothalamic amenorrhoea237120002
- Lactational amenorrhea237122005
- Lactational amenorrhoea237122005
- Endocrine menstrual disturbance237799000
- Amenorrhea associated with obesity413487000
- Amenorrhoea associated with obesity413487000
- Anovulatory amenorrhea444769001
- Anovulatory amenorrhoea444769001
- Normogonadotropic amenorrhea702466002
- Normogonadotropic amenorrhoea702466002
- Amenorrhea due to obstetric fistula1142058003
- Amenorrhoea due to obstetric fistula1142058003
- Amenorrhea due to disorder of pituitary gland1144987003
- Amenorrhea due to pituitary dysfunction1144987003
- Amenorrhoea due to disorder of pituitary gland1144987003
- Amenorrhoea due to pituitary dysfunction1144987003
UMLS
- Amenorrhea secondaryC0232940
- Amenorrhoea secondaryC0232940
- Previous menstrual periods stopC0232940
- Secondary AmenorrheaC0232940
- Secondary amenorrheaC0232940
- Secondary amenorrhoeaC0232940
- Secondary physiologic amenorrheaC0232940
- Secondary physiologic amenorrhea (finding)C0232940
- Secondary physiologic amenorrhoeaC0232940
- amenorrhea secondaryC0232940
- amenorrhoea secondaryC0232940
- secondary amenorrheaC0232940
- secondary amenorrhoeaC0232940
Clinical Terms
- Dysponderal amenorrhea
- Secondary physiologic amenorrhoea
- Amenorrhea secondary
- Amenorrhea associated with obesity
- Amenorrhoea associated with obesity
- Dietary amenorrhoea
- Hypothalamic amenorrhea
- Physiologic amenorrhea
- Amenorrhoea due to pituitary dysfunction
- Amenorrhoea due to obstetric fistula
- Nutritional amenorrhea
- Postpill amenorrhoea
- Normogonadotropic amenorrhea
- Amenorrhoea due to disorder of pituitary gland
- Postpill amenorrhea
- secondary amenorrhoea
- Pathologic amenorrhea
- Exercise-related amenorrhea
- Secondary physiologic amenorrhea (finding)
- Lactational amenorrhea
- Hypothalamic amenorrhoea
- Pathologic amenorrhoea
- Amenorrhea due to pituitary dysfunction
- Physiologic amenorrhoea
- Loss of menstrual period
- Previous menstrual periods stop
- Periods have stopped
- Anovulatory amenorrhoea
- Lactational amenorrhoea
- Dysponderal amenorrhoea
- Amenorrhea due to disorder of pituitary gland
- Normogonadotropic amenorrhoea
- Endocrine menstrual disturbance
- Amenorrhoea secondary
- Exercise-related amenorrhoea
- Nutritional amenorrhoea
- Amenorrhea due to obstetric fistula
- Dietary amenorrhea
- Secondary physiologic amenorrhea
- Anovulatory amenorrhea
Frequently Asked Questions
What is the ICD-10 code for secondary amenorrhea?
The ICD-10-CM code for secondary amenorrhea is N91.1. The full clinical description is "Secondary amenorrhea". N91.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code N91.1 mean?
ICD-10-CM code N91.1 represents “Secondary amenorrhea”. It is classified under Chapter 14: Diseases of the Genitourinary System and is a billable/specific code that can be used on a claim.
Is N91.1 a billable code?
Yes, N91.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is N91.1 in?
N91.1 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
What codes cannot be used with N91.1?
N91.1 has Excludes1 notes indicating codes that cannot be used together with it, including: ovarian dysfunction (E28.-).
What SNOMED CT codes does N91.1 map to?
N91.1 maps to 16 SNOMED CT concepts: 413487000, 1144987003, 1142058003, 444769001, 57260004, and 11 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for N91.1?
N91.1 is linked to 1 UMLS Concept Unique Identifier: C0232940. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does N91.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like secondary amenorrhea affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of N91.1?
N91.1 maps to the ICD-11 code: GA20.01 (Secondary amenorrhoea).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.