ICD-10-CM 2027
ICD-10 code for rumination
From the official ICD-10-CM alphabetic index entry “Rumination”. Page updated September 29, 2026.
About coding rumination
The ICD-10-CM code for rumination is R11.10 (Vomiting, unspecified). The official index lists 7 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R11.10.
Within R11.1, choose R11.10 (unspecified) only when documentation doesn't support a more specific option: without nausea (R11.11), Projectile vomiting (R11.12), of fecal matter (R11.13), Bilious vomiting (R11.14), Cyclical vomiting syndrome unrelated to migraine (R11.15) and cannabis hyperemesis syndrome (R11.16).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific rumination codes (official index)
- with nausea R11.2 — Nausea with vomiting, unspecified
- disorder of infancy or childhood (in remission) F98.21 — Rumination disorder of infancy and childhood
- in adults (in remission) F50.84 — Rumination disorder in adults
- neurotic F42.8 — Other obsessive-compulsive disorder
- newborn P92.1 — Regurgitation and rumination of newborn
- obsessional F42.8 — Other obsessive-compulsive disorder
- psychogenic F42.8 — Other obsessive-compulsive disorder
Common questions about rumination ICD-10 codes
What is the ICD-10 code for rumination?
- R11.10 — Vomiting, unspecified. More specific codes apply when the documentation supports them: R11.2, F98.21, F50.84, F42.8 and others below.
What is the ICD-10 code for neurotic rumination?
- F42.8 — Other obsessive-compulsive disorder.
What is the ICD-10 code for newborn rumination?
- P92.1 — Regurgitation and rumination of newborn.
What is the ICD-10 code for obsessional rumination?
- F42.8 — Other obsessive-compulsive disorder.
What is the ICD-10 code for psychogenic rumination?
- F42.8 — Other obsessive-compulsive disorder.
Is R11.10 billable?
- Yes. R11.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R11.10 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R11.10 as a principal diagnosis.
Is R11.10 a CC or MCC?
- No. R11.10 is neither a CC nor an MCC under MS-DRG v44.0.