N91.0
BillablePrimary amenorrhea
N91.0 is the ICD-10-CM code for Primary amenorrhea. It is a billable, specific code valid for reimbursement.
N00-N99 Diseases of the genitourinary system
What this means — in plain language
MedlinePlus · NIHWhat is menstruation? Menstruation, also called a period, is normal vaginal bleeding that happens as part of the monthly cycle in women and girls. Every month, the body prepares for pregnancy. If pregnancy does not happen, the uterus (womb) sheds its lining. This blood and tissue leave the body through the vagina. What is the menstrual cycle? The menstrual cycle is the monthly process the body goes through to…
Read more about Menstruation at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labelingDrugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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