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Rome IV H1b Functional Nausea and Functional Vomiting Calculator (Pediatric)
x402
Rome IV H1b Functional Nausea and Functional Vomiting Calculator (Pediatric) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Evaluates whether a child meets Rome IV H1b criteria for functional nausea and/or functional vomiting based on caller-assigned clinical flags
Price / call$0.005
Success—
StatusUnknown
How this service works
Hyams 2016 Rome IV H1b. Functional nausea iff 2-month duration plus bothersome_nausea_twice_weekly_not_meal_related, nausea_not_consistently_associated_with_vomiting, and nausea_not_explained_by_another_condition. Functional vomiting iff 2-month duration plus vomiting_at_least_weekly, no_self_induced_eating_disorder_or_rumination, and vomiting_not_explained_by_another_condition. Both may be true. magent does not examine the child. Not a diagnosis, not H1a, CNVS, H1c, or neonate/toddler.
Output
Returns a structured result indicating whether the child meets Rome IV H1b criteria for functional nausea, functional vomiting, both, or neither, based on the boolean flags provided by the caller. Does not provide a diagnosis — clinical judgment remains with the examining clinician.
Example use cases
Pediatric GI workup functional nausea check
“A 10-year-old has had bothersome nausea at least twice a week for 3 months, it's not meal-related, not consistently tied to vomiting, and we've ruled out other conditions — does she meet Rome IV H1b criteria for functional nausea?”
Weekly vomiting functional classification
“A 12-year-old boy has been vomiting at least once a week for over 2 months, there's no self-induced vomiting or eating disorder, and vomiting isn't explained by another condition — does he qualify for Rome IV functional vomiting under H1b?”
Concurrent nausea and vomiting dual criteria check
“Can you run the Rome IV H1b calculator for a child with 2+ months of symptoms: bothersome nausea twice weekly not meal-related (true), nausea not tied to vomiting (true), nausea unexplained (true), vomiting at least weekly (true), no eating disorder or rumination (true), vomiting unexplained (true) — does she meet criteria for functional nausea, functional vomiting, or both?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/rome_iv_child_nausea_vomitingWhen to prefer
Use this endpoint when you have a pediatric patient (not neonate or toddler) with nausea or vomiting symptoms lasting at least 2 months and you want to formally evaluate whether they meet Rome IV H1b criteria for functional nausea and/or functional vomiting. Prefer this over general symptom checkers when you need structured Hyams 2016 Rome IV H1b criterion logic applied programmatically. Not appropriate for H1a (cyclic vomiting syndrome), CNVS, H1c, or adult patients.
Side effects
- Missing required boolean query parameters returns an error
- All flags set to false results in neither condition being met
- Misassignment of clinical flags by caller leads to incorrect classification (magent does not examine the child)
- Endpoint does not apply to neonates, toddlers, H1a, CNVS, or H1c — results may be irrelevant if wrong patient population
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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