# HOSPITAL score HOSPITAL Status: LIVE Price: $0.005 USDC `GET /api/calc/hospital` HTML: https://magentlab.com/docs/hospital Markdown: https://magentlab.com/docs/hospital.md Not a medical device. Not a diagnosis, dose, or listing recommendation. ## What it computes Sum the Donze 2013 HOSPITAL integer score (acronym table, max 13) from caller-assigned flags and prior-year admissions and return the derivation-study band (low / intermediate / high). ## When to use When an agent needs the published HOSPITAL point total and must not invent a discharge order, a diagnosis, or a measured 30-day readmission percent. ## When not to use - Not a medical device and not a discharge, admission, or follow-up order. magent does not examine the patient or read the chart. - Not a diagnosis. The published outcome is potentially avoidable 30-day readmission (SQLape), not all-cause readmission. - Hemoglobin <12 g/dL and sodium <135 mmol/L are caller-assigned flags. magent does not assay labs or accept hemoglobin or sodium numbers. - Risk bands 0–4 low, 5–6 intermediate, ≥7 high follow the Donze 2013 derivation study. magent returns the band only, not a measured readmission percent for this discharge. ## Formula ``` HOSPITAL = hemoglobin_lt_12 (1) + oncology_service (2) + sodium_lt_135 (1) + procedure (1) + urgent_or_emergent_admission (1) + admissions_12mo (0-1: 0, 2-5: 2, >5: 5) + los_ge_5_days (2); Donze 2013 acronym table; max 13; 0-4 low, 5-6 intermediate, >=7 high ``` ## Citation [Potentially Avoidable 30-Day Hospital Readmissions in Medical Patients: Derivation and Validation of a Prediction Model](https://doi.org/10.1001/jamainternmed.2013.3023) Donze J, Aujesky D, Williams D, Schnipper JL JAMA Intern Med. 2013;173(8):632-638 DOI: [10.1001/jamainternmed.2013.3023](https://doi.org/10.1001/jamainternmed.2013.3023) ## Worked example ### All flags absent, no prior-year admissions Given: `admissions_12mo=0, hemoglobin_lt_12=false, los_ge_5_days=false, oncology_service=false, procedure=false, sodium_lt_135=false, urgent_or_emergent_admission=false` 1. All HOSPITAL flags false; admissions_12mo 0 → 0 2. Score = 0 (max 13); risk_band low ### All HOSPITAL items at published maximum Given: `admissions_12mo=6, hemoglobin_lt_12=true, los_ge_5_days=true, oncology_service=true, procedure=true, sodium_lt_135=true, urgent_or_emergent_admission=true` 1. H 1 + O 2 + S 1 + P 1 + I 1 + A >5 → 5 + L 2 2. Score = 13 (max 13); risk_band high. Band only; not a measured percent. ## Also searched as - HOSPITAL score - HOSPITAL index - Donze HOSPITAL - hospital readmission score - potentially avoidable readmission - HOSPITAL 2013 ## Parameters - `hemoglobin_lt_12` (boolean, required): Last hemoglobin <12 g/dL as assigned by the caller (Donze 2013 H). true scores 1. magent does not assay hemoglobin. Do not send a hemoglobin number. - `oncology_service` (boolean, required): Discharge from an oncology service as assigned by the caller (Donze 2013 O). true scores 2. - `sodium_lt_135` (boolean, required): Last sodium <135 mmol/L as assigned by the caller (Donze 2013 S). true scores 1. magent does not assay sodium. Do not send a sodium number. - `procedure` (boolean, required): Any ICD-coded procedure during the stay as assigned by the caller (Donze 2013 P). true scores 1. magent does not read the chart. - `urgent_or_emergent_admission` (boolean, required): Index admission type urgent or emergent, not elective, as assigned by the caller (Donze 2013 I). true scores 1. - `admissions_12mo` (integer, required): Hospital admissions during the previous year (integer 0-50, magent clamp). Donze 2013 A: 0-1 scores 0; 2-5 scores 2; >5 scores 5. Count 0 and 1 both score 0; 2 scores 2; 5 scores 2; 6 scores 5. - `los_ge_5_days` (boolean, required): Length of stay ≥5 days as assigned by the caller (Donze 2013 L). true scores 2. magent does not compute length of stay from dates. ## Bulk (POST) POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement. Method: `POST /api/calc/hospital` Max items: 25 Price: unit_amount + extra_item_amount * (n - 1) (unit 5000 atomic, extra 2000 atomic) Status: PREVIEW - 1 to 25 items. Each item uses the same keys as the GET query parameters. - POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows. - The first invalid item fails the whole request (index in the 400 JSON). You are not charged. - HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row. - Catalog misses (empty matches, found=false) stay paid 200s inside that slot. - x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items. Example request: ```json { "items": [ { "admissions_12mo": "0", "hemoglobin_lt_12": "false", "los_ge_5_days": "false", "oncology_service": "false", "procedure": "false", "sodium_lt_135": "false", "urgent_or_emergent_admission": "false" }, { "admissions_12mo": "0", "hemoglobin_lt_12": "false", "los_ge_5_days": "false", "oncology_service": "false", "procedure": "false", "sodium_lt_135": "false", "urgent_or_emergent_admission": "false" } ] } ``` Human paywall (two-item fixture): https://api.magentlab.com/paywall/bulk/hospital Example 200: ```json { "count": 2, "path": "/api/calc/hospital", "items": [ { "components": [ { "factor": "hemoglobin_lt_12", "points": 0, "present": false }, { "factor": "oncology_service", "points": 0, "present": false }, { "factor": "sodium_lt_135", "points": 0, "present": false }, { "factor": "procedure", "points": 0, "present": false }, { "factor": "urgent_or_emergent_admission", "points": 0, "present": false }, { "value": 0, "factor": "admissions_12mo", "points": 0, "present": false }, { "factor": "los_ge_5_days", "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.", "citation": { "authors": "Donze J, Aujesky D, Williams D, Schnipper JL", "doi": "10.1001/jamainternmed.2013.3023", "id": "donze-2013", "pmid": "23529115", "source": "JAMA Intern Med. 2013;173(8):632-638", "title": "Potentially Avoidable 30-Day Hospital Readmissions in Medical Patients: Derivation and Validation of a Prediction Model" }, "formula": "hospital", "formula_expression": "HOSPITAL = hemoglobin_lt_12 (1) + oncology_service (2) + sodium_lt_135 (1) + procedure (1) + urgent_or_emergent_admission (1) + admissions_12mo (0-1: 0, 2-5: 2, >5: 5) + los_ge_5_days (2); Donze 2013 acronym table; max 13; 0-4 low, 5-6 intermediate, >=7 high", "max_score": 13, "score": 0, "risk_band": "low", "admissions_12mo": 0 }, { "components": [ { "factor": "hemoglobin_lt_12", "points": 0, "present": false }, { "factor": "oncology_service", "points": 0, "present": false }, { "factor": "sodium_lt_135", "points": 0, "present": false }, { "factor": "procedure", "points": 0, "present": false }, { "factor": "urgent_or_emergent_admission", "points": 0, "present": false }, { "value": 0, "factor": "admissions_12mo", "points": 0, "present": false }, { "factor": "los_ge_5_days", "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.", "citation": { "authors": "Donze J, Aujesky D, Williams D, Schnipper JL", "doi": "10.1001/jamainternmed.2013.3023", "id": "donze-2013", "pmid": "23529115", "source": "JAMA Intern Med. 2013;173(8):632-638", "title": "Potentially Avoidable 30-Day Hospital Readmissions in Medical Patients: Derivation and Validation of a Prediction Model" }, "formula": "hospital", "formula_expression": "HOSPITAL = hemoglobin_lt_12 (1) + oncology_service (2) + sodium_lt_135 (1) + procedure (1) + urgent_or_emergent_admission (1) + admissions_12mo (0-1: 0, 2-5: 2, >5: 5) + los_ge_5_days (2); Donze 2013 acronym table; max 13; 0-4 low, 5-6 intermediate, >=7 high", "max_score": 13, "score": 0, "risk_band": "low", "admissions_12mo": 0 } ] } ``` ## Response fields - `formula` (string): hospital - `formula_expression` (string): Exact expression used - `score` (integer): HOSPITAL points 0-13 (Donze 2013) - `max_score` (integer): Always 13 - `risk_band` (string): Donze 2013 derivation band: low (0-4), intermediate (5-6), or high (>=7). A band, not a measured readmission percent for this discharge. - `admissions_12mo` (integer): Prior-year hospital admission count used for Donze 2013 A - `components` (array): Per-factor HOSPITAL acronym points - `citation` (object): Donze et al. JAMA Intern Med 2013 citation - `disclaimer` (string): Not-a-device notice ## Example JSON Frozen fixture. Not a live lookup. ```json { "components": [ { "factor": "hemoglobin_lt_12", "points": 0, "present": false }, { "factor": "oncology_service", "points": 0, "present": false }, { "factor": "sodium_lt_135", "points": 0, "present": false }, { "factor": "procedure", "points": 0, "present": false }, { "factor": "urgent_or_emergent_admission", "points": 0, "present": false }, { "value": 0, "factor": "admissions_12mo", "points": 0, "present": false }, { "factor": "los_ge_5_days", "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.", "citation": { "authors": "Donze J, Aujesky D, Williams D, Schnipper JL", "doi": "10.1001/jamainternmed.2013.3023", "id": "donze-2013", "pmid": "23529115", "source": "JAMA Intern Med. 2013;173(8):632-638", "title": "Potentially Avoidable 30-Day Hospital Readmissions in Medical Patients: Derivation and Validation of a Prediction Model" }, "formula": "hospital", "formula_expression": "HOSPITAL = hemoglobin_lt_12 (1) + oncology_service (2) + sodium_lt_135 (1) + procedure (1) + urgent_or_emergent_admission (1) + admissions_12mo (0-1: 0, 2-5: 2, >5: 5) + los_ge_5_days (2); Donze 2013 acronym table; max 13; 0-4 low, 5-6 intermediate, >=7 high", "max_score": 13, "score": 0, "risk_band": "low", "admissions_12mo": 0 } ``` ## Errors - HTTP 400 `invalid_flag`: boolean clinical flags must be true or false Returned before settlement; you are not charged. - HTTP 400 `invalid_admissions_12mo`: admissions_12mo must be an integer from 0 to 50 (Donze 2013 prior-year count; magent clamp). Returned before settlement; you are not charged. - HTTP 400 `invalid_hospital`: each HOSPITAL 2013 item must be a published value for that field. Returned before settlement; you are not charged. - HTTP 400 `invalid_items`: POST body must be a JSON object with only an items array Returned before settlement; you are not charged. - HTTP 400 `invalid_item_count`: items must be an array of 1 to 25 objects Returned before settlement; you are not charged. - HTTP 400 `invalid_item`: each items entry must be a JSON object Returned before settlement; you are not charged. Shared HTTP 402 and 503: https://magentlab.com/docs/payments ## Related tools - [LACE](https://magentlab.com/docs/lace) — Sum van Walraven 2010 Table 3 LACE points from length of stay, acute (emergent) admission, a caller-supplied Charlson integer, and ED visits in the previous 6 months. ## Payment Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. - GET the tool with Accept: application/json (do not send Accept: text/html unless you want the human paywall). - HTTP 402 means you have not paid. Decode the base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote. - Sign accepts[0] (exact, EIP-3009) with validBefore = now + maxTimeoutSeconds (600 seconds), or accepts[1] (batch-settlement deposit/voucher) on product GET. Ping and POST {items} stay exact. Magent retries transient facilitator 429/5xx before answering. - Retry the same URL with PAYMENT-SIGNATURE (base64 JSON of accepted and payload). Magent attaches canonical extensions.bazaar on CDP verify/settle; echoing 402 bazaar is optional. - Success is HTTP 200 JSON plus PAYMENT-RESPONSE. exact settles before the tool. batch-settlement verifies (and deposit-settles) before the tool and commits the charge after HTTP 2xx. HTTP 503: retry the same PAYMENT-SIGNATURE. Mint a new exact nonce only after a new HTTP 402. - offered `exact` on eip155:8453: Fixed-price USDC on Base. The buyer authorizes the advertised amount (EIP-3009). magent settles before the tool runs (paymentFlow upfront). extra.assetTransferMethod=eip3009 extra.paymentFlow=upfront. - offered `batch-settlement` on eip155:8453: Payment-channel vouchers claimed later in batches. Exact stays accepts[0]. Same-path POST {items} is still exact. extra.assetTransferMethod=eip3009 extra.paymentFlow=authorization. - not offered `upto`: Not offered. Usage-based: buyer authorizes a ceiling, seller settles the actual amount after work. Reserved for a future metered tool. Not for current calculators or code search. Same-path POST {items} is still scheme exact: one EIP-3009 authorization for GET unit plus $0.002 per extra item. That is not x402 batch-settlement (payment channels / vouchers). Shared HTTP 402 and 503 table: https://magentlab.com/docs/payments Stdio MCP (one process per host): https://magentlab.com/docs/mcp ## Guarantees - HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON. - exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE. - HTTP 402 is unpaid only. Do not sign a second authorization because of a 503. - Execution is timeout-bounded and concurrency-capped. - Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.