R11.1 — Vomiting
R11.1 is a non-billable header ICD-10-CM code for vomiting. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 inherited from the categories above R11.1
These are not written on R11.1, but they bind it: a note on a category applies to every code beneath it. Billing R11.1 with anything listed here is a denial.
Written on R11 — Nausea and vomiting
Other codes that can never be billed with R11.1
These codes carry an Excludes1 note pointing at R11.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R11.1 alone.
Risk adjustment
R11.1 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 history
R11.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead R11.1
7 child codes. Green means billable.
Related codes at this level
Codes that share R11. If R11.1 is not quite right, the correct code is usually one of these.
Questions about R11.1
- Is R11.1 a billable ICD-10-CM code?
- No. R11.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does R11.1 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 R11.1?
- R11.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above R11.1 (R11) and apply to it just the same.