Mild hyperemesis gravidarum

This code represents a pregnancy-related condition characterized by persistent and severe nausea and vomiting that is more extreme than typical morning sickness, but without significant dehydration or weight loss. It indicates a milder form of hyperemesis gravidarum, where the patient's fluid and electrolyte balance remains largely stable.

Apply this code when a pregnant patient experiences intractable nausea and vomiting that impacts daily activities but does not necessitate intravenous fluid replacement or lead to substantial weight loss. Documentation should clearly state "mild hyperemesis gravidarum" or describe symptoms consistent with this severity, such as persistent vomiting without signs of dehydration.

• Differentiate from "morning sickness" (R11.2) which is less severe and typically self-limiting.
• Do not use if documentation indicates dehydration, electrolyte imbalance, or significant weight loss; these would warrant a more severe hyperemesis code.
• Always sequence as a primary diagnosis when it is the reason for the encounter.