Amenorrhea, unspecified

This code represents the absence of menstruation in a female of reproductive age, where the underlying cause has not yet been determined or specified. It signifies a lack of menstrual periods without further diagnostic clarity regarding its etiology.

Use this code when the patient presents with amenorrhea, and the medical record does not specify whether it is primary (never started menstruation) or secondary (menstruation stopped after having started). It is appropriate when documentation indicates "amenorrhea" without further qualifying details.

• Avoid using this code if the type of amenorrhea (primary or secondary) is documented; instead, use the more specific codes N91.0 or N91.1.
• Always review the medical record for any underlying conditions that may be causing the amenorrhea, and code those conditions first if they are definitively diagnosed.
• This code is often a temporary diagnosis while further investigation into the cause of the amenorrhea is underway.