Skip to content
HCC Buddy home

O21.0

Billable

Mild hyperemesis gravidarum

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

What This Code Means

Mild excessive nausea and vomiting during pregnancy that does not cause significant dehydration or electrolyte imbalances.

Coding Tips

  • •This code indicates hyperemesis gravidarum without metabolic complications; document severity level in the medical record
  • •Distinguish from O21.1 which includes metabolic disturbances like electrolyte imbalances

Code Hierarchy

└O21Excessive vomiting in pregnancy└O21.0Mild hyperemesis gravidarum
└O21.0Mild hyperemesis gravidarum

Open O21.0 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