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  5. Nausea and vomiting (R11)

Nausea and vomiting (R11)

ICD-10 code section R11 covers conditions related to nausea and vomiting, including specific types and patterns such as nausea alone, different forms of vomiting, and cyclical vomiting syndrome. These codes are used to classify and report symptoms involving nausea and various vomiting presentations without attaching them to an underlying cause.

This section includes the general code R11 for combined nausea and vomiting, and more specific codes like R11.0 for nausea (also called postoperative or functional nausea) and R11.1 for vomiting. Coders will find distinct entries for vomiting subtypes, such as R11.11 for vomiting without nausea, R11.12 for projectile vomiting, R11.13 for vomiting fecal matter, and R11.14 for bilious or bile pigment vomiting. The code R11.15 identifies cyclical vomiting syndrome unrelated to migraines, characterized by persistent, uncontrollable vomiting episodes. When vomiting or nausea and vomiting are unspecified, codes like R11.10 or R11.2 apply. Recognizing synonyms like "postoperative nausea," "projectile vomiting," or "hyperemesis" when matching clinical documentation to these codes supports accurate coding and reporting of gastrointestinal symptoms.

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • cyclical vomiting associated with migraine G43.A
  • excessive vomiting in pregnancy O21
  • hematemesis K92.0
  • neonatal hematemesis P54.0
  • newborn vomiting P92.0
  • psychogenic vomiting F50.89
  • vomiting associated with bulimia nervosa F50.2
  • vomiting following gastrointestinal surgery K91.0

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Nausea

An unpleasant sensation in the stomach usually accompanied by the urge to vomit. Common causes are early pregnancy, sea and motion sickness, emotional stress, intense pain, food poisoning, and various enteroviruses.

Postoperative Nausea and Vomiting

Emesis and queasiness occurring after anesthesia.

Vomiting

The forcible expulsion of the contents of the STOMACH through the MOUTH.

Vomiting, Anticipatory

Vomiting caused by expectation of discomfort or unpleasantness.