ICD10 CM Tabular
N91 Absent, scanty and rare menstruation
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N91.0 Primary amenorrhea
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N91.1 Secondary amenorrhea
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N91.2 Amenorrhea, unspecified
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N91.3 Primary oligomenorrhea
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N91.4 Secondary oligomenorrhea
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N91.5 Oligomenorrhea, unspecified