N91.2
BillableAmenorrhea, unspecified
Amenorrhea, unspecified
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(68)
SNOMED CT
- Absence of menstruation14302001
- Amenorrhea14302001
- Amenorrhoea14302001
- Premenopausal amenorrhea32590007
- Premenopausal amenorrhoea32590007
- Physiologic amenorrhea44811000
- Physiologic amenorrhoea44811000
- Pathologic amenorrhea56561006
- Pathologic amenorrhoea56561006
- Cryptomenorrhea58851004
- Cryptomenorrhoea58851004
- Amenorrhea due to Kallman syndrome1144947008
- Amenorrhea due to congenital GnRH (gonadotrophin releasing hormone) deficiency1144947008
- Amenorrhea due to congenital gonadotrophin releasing hormone deficiency1144947008
- Amenorrhoea due to Kallman syndrome1144947008
- Amenorrhoea due to congenital GnRH (gonadotrophin releasing hormone) deficiency1144947008
- Amenorrhoea due to congenital gonadotrophin releasing hormone deficiency1144947008
- Amenorrhea due to disorder of ovary1144991008
- Amenorrhoea due to disorder of ovary1144991008
- Amenorrhea due to disorder of hypothalamus1144993006
- Amenorrhea due to hypothalamic disorder1144993006
- Amenorrhoea due to disorder of hypothalamus1144993006
- Amenorrhoea due to hypothalamic disorder1144993006
UMLS
- Abnormal absence of menstruationC0002453
- Absence of menstruationC0002453
- AmenorrheaC0002453
- Amenorrhea (finding)C0002453
- Amenorrhea, unspecifiedC0002453
- AmenorrhoeaC0002453
- Amenorrhoea NOSC0002453
- Menses lack ofC0002453
- absence of menstruationC0002453
- ameniaC0002453
- amenorrheaC0002453
- amenorrhoeaC0002453
- cessation of mensesC0002453
- lack of mensesC0002453
- menstruation absenceC0002453
Clinical Terms
- Amenorrhoea due to disorder of ovary
- amenorrhoea
- menstruation absence
- Cryptomenorrhea
- absence of menstruation
- Amenorrhea (finding)
- Physiologic amenorrhea
- Amenorrhoea NOS
- lack of menses
- Pathologic amenorrhea
- Amenorrhoea due to congenital gonadotrophin releasing hormone deficiency
- Amenorrhea due to disorder of hypothalamus
- Pathologic amenorrhoea
- Physiologic amenorrhoea
- Cryptomenorrhoea
- Premenopausal amenorrhoea
- Premenopausal amenorrhea
- Amenorrhea due to congenital GnRH (gonadotrophin releasing hormone) deficiency
- amenia
- Amenorrhoea due to congenital GnRH (gonadotrophin releasing hormone) deficiency
- Amenorrhoea due to disorder of hypothalamus
- Menses lack of
- Amenorrhea due to hypothalamic disorder
- Amenorrhoea due to Kallman syndrome
- Amenorrhea due to congenital gonadotrophin releasing hormone deficiency
- Amenorrhea due to Kallman syndrome
- Abnormal absence of menstruation
- Amenorrhea due to disorder of ovary
- Amenorrhoea due to hypothalamic disorder
- cessation of menses
Frequently Asked Questions
What is the ICD-10 code for amenorrhea, unspecified?
The ICD-10-CM code for amenorrhea, unspecified is N91.2. The full clinical description is "Amenorrhea, unspecified". N91.2 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code N91.2 mean?
ICD-10-CM code N91.2 represents “Amenorrhea, unspecified”. 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 N91.2 a billable code?
Yes, N91.2 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is N91.2 in?
N91.2 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
What codes cannot be used with N91.2?
N91.2 has Excludes1 notes indicating codes that cannot be used together with it, including: ovarian dysfunction (E28.-).
What SNOMED CT codes does N91.2 map to?
N91.2 maps to 8 SNOMED CT concepts: 14302001, 1144947008, 1144993006, 1144991008, 58851004, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for N91.2?
N91.2 is linked to 1 UMLS Concept Unique Identifier: C0002453. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does N91.2 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like amenorrhea, unspecified 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 N91.2?
N91.2 maps to the ICD-11 code: GA20.0Z (Amenorrhoea, unspecified).
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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.