Surgical wound class (Mangram 1999)

Wound class

Return the caller-assigned CDC/HICPAC surgical wound class 1-4 with the published class label and Table 7 description (Mangram 1999). magent does not inspect the wound. Not SSI rates. Not AMP selection.

LIVE $0.005 USDC GET /api/calc/wound_class

Markdown: /docs/wound-class.md · Canonical: https://magentlab.com/docs/wound-class

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

When to use

When an agent already has a CDC/HICPAC surgical wound class 1-4 as assigned by the caller and needs the canonical label (e.g. I/Clean) and Mangram 1999 Table 7 wording. magent does not inspect the wound or assign the class. Not a diagnosis of infection and not antimicrobial prophylaxis selection.

When not to use

Not a medical device. Not a diagnosis of infection. Not antimicrobial prophylaxis (AMP) selection.
The caller assigns wound_class 1-4. magent does not inspect the wound.
Mangram 1999 Table 7 CDC/HICPAC surgical wound classification only. Does not invent SSI percentage rates (not in Table 7).

Formula

wound_class in {1, 2, 3, 4} as assigned by the caller (Mangram 1999 CDC/HICPAC Table 7 Class I-IV). magent does not inspect the wound. Not SSI rates. Not AMP selection.

Citation

Title: Guideline for Prevention of Surgical Site Infection, 1999
Authors: Mangram AJ, Horan TC, Pearson ML, Silver LC, Jarvis WR, Hospital Infection Control Practices Advisory Committee
Source: Infect Control Hosp Epidemiol. 1999;20(4):250-278
DOI: 10.1086/501620

Worked example

Class I/Clean

Given: wound_class=1

wound_class 1 as assigned by the caller
class_label I/Clean
An uninfected operative wound in which no inflammation is encountered

Class IV/Dirty-Infected

Given: wound_class=4

wound_class 4 as assigned by the caller
class_label IV/Dirty-Infected
old traumatic wounds with retained devitalized tissue, existing clinical infection, or perforated viscera

Also searched as

CDC wound class
surgical wound classification
Class I clean
clean-contaminated
contaminated wound
dirty-infected
HICPAC wound class
Mangram 1999
CDC Class I-IV
NNIS wound class

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/wound_class?wound_class=1

Full URL: https://api.magentlab.com/api/calc/wound_class?wound_class=1

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/wound_class?wound_class=1"

Parameters

Name	Type	Required	Description
`wound_class`	integer	required	CDC/HICPAC surgical wound class 1-4 as assigned by the caller (Mangram 1999 Table 7: 1 Class I/Clean, uninfected operative wound, no inflammation, respiratory/alimentary/genital/uninfected urinary tract not entered; 2 Class II/Clean-Contaminated, those tracts entered under controlled conditions without unusual contamination; 3 Class III/Contaminated, open fresh accidental wounds, major break in technique, GI spillage, or acute nonpurulent inflammation; 4 Class IV/Dirty-Infected, old traumatic wounds with retained devitalized tissue, existing clinical infection, or perforated viscera). Integer 1-4 only; reject 0, 5, 1.5, and roman I. magent does not inspect the wound. Not SSI rates. Not AMP selection.

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.

POST /api/calc/wound_class Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 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 (fixture)

{
  "items": [
    {
      "wound_class": "1"
    },
    {
      "wound_class": "1"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/wound_class",
  "items": [
    {
      "description": "An uninfected operative wound in which no inflammation is encountered and the respiratory, alimentary, genital, or uninfected urinary tract is not entered. In addition, clean wounds are primarily closed and, if necessary, drained with closed drainage. Operative incisional wounds that follow nonpenetrating (blunt) trauma should be included in this category if they meet the criteria.",
      "components": [
        {
          "factor": "class_i_clean",
          "met": true
        },
        {
          "factor": "class_ii_clean_contaminated",
          "met": false
        },
        {
          "factor": "class_iii_contaminated",
          "met": false
        },
        {
          "factor": "class_iv_dirty",
          "met": 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": "Mangram AJ, Horan TC, Pearson ML, Silver LC, Jarvis WR, Hospital Infection Control Practices Advisory Committee",
        "doi": "10.1086/501620",
        "id": "mangram-1999",
        "pmid": "10219875",
        "source": "Infect Control Hosp Epidemiol. 1999;20(4):250-278",
        "title": "Guideline for Prevention of Surgical Site Infection, 1999"
      },
      "formula": "wound_class",
      "formula_expression": "wound_class in {1, 2, 3, 4} as assigned by the caller (Mangram 1999 CDC/HICPAC Table 7 Class I-IV). magent does not inspect the wound. Not SSI rates. Not AMP selection.",
      "class_label": "I/Clean",
      "wound_class": 1
    },
    {
      "description": "An uninfected operative wound in which no inflammation is encountered and the respiratory, alimentary, genital, or uninfected urinary tract is not entered. In addition, clean wounds are primarily closed and, if necessary, drained with closed drainage. Operative incisional wounds that follow nonpenetrating (blunt) trauma should be included in this category if they meet the criteria.",
      "components": [
        {
          "factor": "class_i_clean",
          "met": true
        },
        {
          "factor": "class_ii_clean_contaminated",
          "met": false
        },
        {
          "factor": "class_iii_contaminated",
          "met": false
        },
        {
          "factor": "class_iv_dirty",
          "met": 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": "Mangram AJ, Horan TC, Pearson ML, Silver LC, Jarvis WR, Hospital Infection Control Practices Advisory Committee",
        "doi": "10.1086/501620",
        "id": "mangram-1999",
        "pmid": "10219875",
        "source": "Infect Control Hosp Epidemiol. 1999;20(4):250-278",
        "title": "Guideline for Prevention of Surgical Site Infection, 1999"
      },
      "formula": "wound_class",
      "formula_expression": "wound_class in {1, 2, 3, 4} as assigned by the caller (Mangram 1999 CDC/HICPAC Table 7 Class I-IV). magent does not inspect the wound. Not SSI rates. Not AMP selection.",
      "class_label": "I/Clean",
      "wound_class": 1
    }
  ]
}

Response

Field	Type	Description
`formula`	string	wound_class
`formula_expression`	string	Published Mangram 1999 Table 7 class rule
`wound_class`	integer	Caller-assigned CDC/HICPAC class 1-4
`class_label`	string	Roman class plus name (e.g. I/Clean)
`description`	string	Mangram 1999 Table 7 wording for that class
`components`	array	Per-class Tree rows class_i_clean, class_ii_clean_contaminated, class_iii_contaminated, class_iv_dirty with factor and met; exactly one is met
`citation`	object	Mangram 1999 Infect Control Hosp Epidemiol citation
`disclaimer`	string	Not-a-device notice

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "description": "An uninfected operative wound in which no inflammation is encountered and the respiratory, alimentary, genital, or uninfected urinary tract is not entered. In addition, clean wounds are primarily closed and, if necessary, drained with closed drainage. Operative incisional wounds that follow nonpenetrating (blunt) trauma should be included in this category if they meet the criteria.",
  "components": [
    {
      "factor": "class_i_clean",
      "met": true
    },
    {
      "factor": "class_ii_clean_contaminated",
      "met": false
    },
    {
      "factor": "class_iii_contaminated",
      "met": false
    },
    {
      "factor": "class_iv_dirty",
      "met": 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": "Mangram AJ, Horan TC, Pearson ML, Silver LC, Jarvis WR, Hospital Infection Control Practices Advisory Committee",
    "doi": "10.1086/501620",
    "id": "mangram-1999",
    "pmid": "10219875",
    "source": "Infect Control Hosp Epidemiol. 1999;20(4):250-278",
    "title": "Guideline for Prevention of Surgical Site Infection, 1999"
  },
  "formula": "wound_class",
  "formula_expression": "wound_class in {1, 2, 3, 4} as assigned by the caller (Mangram 1999 CDC/HICPAC Table 7 Class I-IV). magent does not inspect the wound. Not SSI rates. Not AMP selection.",
  "class_label": "I/Clean",
  "wound_class": 1
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

HTTP	Code	When
400	`invalid_wound_class`	wound_class must be 1, 2, 3, or 4 (Mangram 1999 CDC/HICPAC Table 7 Class I-IV). Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

MESS — Compute the Johansen 1990 Mangled Extremity Severity Score from caller-assigned skeletal/soft-tissue, limb ischemia, shock, and age integers, doubling ischemia when time exceeds 6 hours, and return the published 0-6 / ≥7 band.
Surgical Apgar — Compute the Gawande 2007 intraoperative Surgical Apgar score from estimated blood loss, lowest mean arterial pressure, and lowest heart rate.

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. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /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.