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R11

R11Nausea and vomiting

Non-billable headerICD-10-CM

R11 is a non-billable header ICD-10-CM code for nausea and vomiting. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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)

Other codes that can never be billed with R11

These codes carry an Excludes1 note pointing at R11. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R11 alone.

Risk adjustment

R11 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead R11

3 child codes. Green means billable.

Questions about R11

Is R11 a billable ICD-10-CM code?
No. R11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does R11 sit in the tabular list?
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving the digestive system and abdomen (R10-R19).
What cannot be coded together with R11?
R11 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.