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ACC/AHA Heart Failure Stage Calculator (Yancy 2013)
x402
ACC/AHA Heart Failure Stage Calculator (Yancy 2013) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Assigns the 2013 ACCF/AHA heart failure stage (A, B, C, or D) from four boolean clinical flags provided by the caller, following the Yancy 2013 progressive staging algorithm.
Price / call$0.005
Success—
StatusUnknown
How this service works
2013 ACCF/AHA heart-failure stages (Yancy) from four caller flags: high risk for HF, structural heart disease, prior or current HF symptoms, and refractory specialized care. Returns hf_stage A, B, C, D, or not_staged. Progressive and inviolate: D first, then C, B, A, else not_staged. Not NYHA class and not a diagnosis. magent does not examine the patient or read an echocardiogram.
Output
Returns a single hf_stage field with one of five values: A (high risk, no structural disease or symptoms), B (structural disease, no symptoms), C (structural disease with prior or current symptoms), D (refractory HF requiring specialized care), or not_staged if none of the flags qualify under the algorithm. Staging is applied in strict D→C→B→A priority order.
Example use cases
EHR clinical decision support staging
“I have a patient with documented structural heart disease but no current or prior HF symptoms and no refractory care needs — not just high-risk. What is their ACC/AHA Yancy 2013 heart failure stage?”
Refractory HF triage classification
“This patient requires specialized interventions for refractory heart failure. They also have structural heart disease and current symptoms. What stage are they under the 2013 ACCF/AHA Yancy framework?”
High-risk patient with no structural disease
“A patient is flagged as high risk for heart failure but has no structural heart disease, no HF symptoms, and does not need refractory care. Can you assign their ACC/AHA HF stage using the Yancy 2013 criteria?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/acc_aha_hfWhen to prefer
Use this endpoint when you need a fast, deterministic mapping from four pre-assessed clinical boolean flags to a 2013 ACCF/AHA heart failure stage per Yancy. Prefer it over manual lookup tables or LLM reasoning when you need consistent, guideline-adherent staging logic in a pipeline. Not appropriate if you need NYHA functional class, a diagnosis, or if you lack pre-assessed clinical flags — this endpoint does not examine patients or interpret echocardiograms.
Side effects
- Missing required boolean flags returns a validation error
- All flags false returns not_staged rather than an error
- Caller-supplied flags that are clinically incorrect will produce a logically consistent but medically wrong stage — the API does not validate clinical accuracy
- Non-boolean values for flag fields will fail schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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