2026 ICD-10-CM Diagnosis Code R11.15Cyclical vomiting syndrome unrelated to migraine
ICD-10-CM Codes›R00–R99›R10-R19›R11
- Billable — Valid for Submission
- Chronic Condition
R11.15 is a billable ICD-10-CM diagnosis code for cyclical vomiting syndrome unrelated to migraine. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 393 through 395. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as persistent vomiting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nausea and vomiting.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Persistent vomiting
- Uncontrollable vomiting
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Cyclic vomiting syndrome NOS
- Persistent vomiting
Type 1 Excludes
- cyclical vomiting in migraine G43.A
Type 2 Excludes
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
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.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- persistent - R11.15
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Vomiting
- cyclical syndrome NOS (unrelated to migraine)
- Vomiting
- persistent
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
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.
Patient EducationClinical
Nausea and Vomiting
Nausea is when you feel sick to your stomach, as if you are going to throw up. Vomiting is when you throw up.
The full article covers:
- What are nausea and vomiting?
- What causes nausea and vomiting?
- When do I need to see a health care provider for nausea and vomiting?
- How is the cause of nausea and vomiting diagnosed?
- What are the treatments for nausea and vomiting?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code History & ChangesHistory
Replacement R11.15 replaces the following previously assigned code(s):
- K31.89 - Other diseases of stomach and duodenum
- R11 - Nausea and vomiting
- R11.0 - Nausea
Questions About R11.15Overview
Is R11.15 (Vomiting) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cyclical vomiting syndrome unrelated to migraine on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does R11.15 group to?
When cyclical vomiting syndrome unrelated to migraine is the principal diagnosis on an inpatient stay, it groups to MS-DRG 393, 394, 395, with relative weights from 0.6490 to 1.5993 depending on complications. Higher weights mean higher Medicare reimbursement.
Can R11.15 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the cyclical vomiting syndrome unrelated to migraine is established, that condition takes the principal position instead.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
