{"uid":"cap_HOJb-ElsoRjIBKJm5ow5X","slug":"magent-ich-score-calculator-hemphill-2001-be8d4d16","name":"magent ICH Score Calculator (Hemphill 2001)","description":"Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.","url":"https://api.magentlab.com/api/calc/ich_score?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["gcs","age","infratentorial_origin","ich_volume_ml","ivh"],"properties":{"age":{"type":"integer","description":"Age in years (18-120). ≥80 scores 1; 79 does not."},"gcs":{"type":"integer","description":"Caller-assigned GCS total (integer 3-15). 3-4 scores 2; 5-12 scores 1; 13-15 scores 0. magent does not compute GCS from eye, verbal, and motor here."},"ivh":{"type":"boolean","description":"Intraventricular hemorrhage as assigned by the caller. true or false. 1 point if true. magent does not read a CT scan."},"ich_volume_ml":{"type":"number","description":"ICH volume in mL (cm^3 in Hemphill 2001). Number from 0.1 to 300. ≥30 scores 1; 29.9 does not. magent does not measure volume from imaging."},"infratentorial_origin":{"type":"boolean","description":"Infratentorial origin of the hemorrhage as assigned by the caller. true or false. 1 point if true. magent does not read a CT scan."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"path":"/api/calc/ich_score","count":2,"items":[{"gcs":15,"score":0,"formula":"ich_score","citation":{"id":"hemphill-2001","doi":"10.1161/01.STR.32.4.891","title":"The ICH Score: a simple, reliable grading scale for intracerebral hemorrhage","source":"Stroke. 2001;32(4):891-897","authors":"Hemphill JC 3rd, Bonovich DC, Besmertis L, Manley GT, Johnston SC"},"age_years":70,"max_score":6,"components":[{"value":15,"factor":"gcs","points":0,"present":false},{"value":70,"factor":"age","points":0,"present":false},{"factor":"infratentorial_origin","points":0,"present":false},{"value":10,"factor":"ich_volume_ml","points":0,"present":false},{"factor":"ivh","points":0,"present":false}],"disclaimer":"Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.","ich_volume_ml":10,"formula_expression":"ICH Score = gcs + age_ge_80 + infratentorial_origin + ich_volume_ge_30_ml + ivh; GCS 3-4 → 2, 5-12 → 1, 13-15 → 0; age >=80 1; infratentorial origin 1; volume >=30 mL 1; IVH 1; max 6"},{"gcs":15,"score":0,"formula":"ich_score","citation":{"id":"hemphill-2001","doi":"10.1161/01.STR.32.4.891","title":"The ICH Score: a simple, reliable grading scale for intracerebral hemorrhage","source":"Stroke. 2001;32(4):891-897","authors":"Hemphill JC 3rd, Bonovich DC, Besmertis L, Manley GT, Johnston SC"},"age_years":70,"max_score":6,"components":[{"value":15,"factor":"gcs","points":0,"present":false},{"value":70,"factor":"age","points":0,"present":false},{"factor":"infratentorial_origin","points":0,"present":false},{"value":10,"factor":"ich_volume_ml","points":0,"present":false},{"factor":"ivh","points":0,"present":false}],"disclaimer":"Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.","ich_volume_ml":10,"formula_expression":"ICH Score = gcs + age_ge_80 + infratentorial_origin + ich_volume_ge_30_ml + ivh; GCS 3-4 → 2, 5-12 → 1, 13-15 → 0; age >=80 1; infratentorial origin 1; volume >=30 mL 1; IVH 1; max 6"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NZPwGDQFBIya1q_P49eb_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the Hemphill 2001 ICH Score (0–6) from caller-supplied GCS, age, infratentorial origin, ICH volume, and intraventricular hemorrhage status.","exampleAgentPrompt":"Calculate the Hemphill 2001 ICH score for a patient with a GCS of 8, age 83, ICH volume of 42 mL, infratentorial origin, and no intraventricular hemorrhage.","exampleUseCases":[{"title":"ICU triage for ICH patient","prompt":"My patient is 85 years old, has a GCS of 4, a 55 mL supratentorial bleed, and there's intraventricular hemorrhage on CT — can you calculate the Hemphill ICH score?"},{"title":"Neurology handoff documentation","prompt":"For the handoff note, I need the ICH score: patient is 72, GCS is 14, ICH volume is 18 mL, origin is infratentorial, and no IVH was seen."},{"title":"ED risk stratification for small bleed","prompt":"Calculate the ICH score for a 65-year-old ED patient with a GCS of 15, a 12 mL bleed, supratentorial origin, and no intraventricular hemorrhage."}],"resultDescription":"Returns the total ICH Score (integer 0–6) with component-level point contributions for each of the five inputs (GCS tier, age ≥80, volume ≥30 mL, infratentorial origin, IVH), along with a citation to Hemphill 2001 and a disclaimer that the result is not a diagnosis or withdrawal-of-care protocol.","failureModes":["Missing required query parameters (gcs, age, infratentorial_origin, ich_volume_ml, ivh) returns a validation error","GCS value outside 3–15 range may return an error or undefined behavior","ICH volume outside 0.1–300 mL range may be rejected","Age outside 18–120 range may be rejected","Non-integer GCS or age values may fail schema validation","Boolean fields passed as strings (e.g. 'true' vs true) may cause parse errors"],"whenToPreferThis":"Use this endpoint when you need a fast, deterministic, citable Hemphill 2001 ICH Score and already have the five required clinical values (GCS, age, ICH volume, infratentorial origin, IVH) assigned by a clinician. Prefer this over manual lookup tables when automating clinical documentation, building stroke decision-support workflows, or needing a machine-readable score with provenance. Do not use for the FUNC score, ICH-GS, or any score requiring raw CT image analysis — this endpoint does not read imaging.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T06:51:25.289Z","isFirstParty":false,"canonicalSlug":"magent-ich-score-calculator-hemphill-2001-be8d4d16"}