Skip to content
HCC Buddy home

N91.0

Billable

Primary amenorrhea

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

The absence of menstrual periods in a female who has never menstruated before, typically occurring when a girl reaches puberty without starting her period.

Coding Tips

  • •Document the age of the patient and whether secondary sexual characteristics are present to support the diagnosis
  • •Differentiate from secondary amenorrhea by confirming the patient has never had a menstrual period

Code Hierarchy

└N91Absent, scanty and rare menstruation└N91.0Primary amenorrhea
└N91.0Primary amenorrhea

Open N91.0 in the Interactive Encoder

See full code details, AI coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial — no credit card required.

Open in EncoderStart 14-Day Pro Trial