Emergency · LIVE

Charlson comorbidity index (Charlson)

Charlson CCI

Sum the nineteen Charlson 1987 original comorbidity weights and return the published 1-year mortality group.

LIVE $0.005 USDC GET /api/calc/charlson

Markdown: /docs/charlson.md · Canonical: https://magentlab.com/docs/charlson

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

What it computes

Sum the nineteen Charlson 1987 original comorbidity weights and return the published 1-year mortality group.

When to use

When an agent needs the Charlson 1987 original weighted index from caller-assigned flags and must not invent Deyo, Quan, ICD mapping, or age points.

When not to use

Not a medical device and not a diagnosis. magent does not assign comorbidities from a chart or ICD codes.
This is the Charlson 1987 original weighted index only. It is not Deyo, not Quan, not ICD mapping, and not age-adjusted Charlson.
The nineteen flags are independent. Overlapping pairs (for example both diabetes flags) are summed as published weights, not silently dropped.
Age is not added. 1-year mortality groups follow Charlson 1987 (0 / 1–2 / 3–4 / ≥5) and are not a treatment order.
LACE takes a caller-supplied Charlson integer; this tool computes that integer from flags.

Formula

CCI = myocardial_infarction 1 + congestive_heart_failure 1 + peripheral_vascular_disease 1 + cerebrovascular_disease 1 + dementia 1 + chronic_pulmonary_disease 1 + connective_tissue_disease 1 + peptic_ulcer_disease 1 + mild_liver_disease 1 + diabetes 1 + hemiplegia 2 + moderate_severe_renal_disease 2 + diabetes_end_organ 2 + any_tumor 2 + leukemia 2 + lymphoma 2 + moderate_severe_liver_disease 3 + metastatic_solid_tumor 6 + aids 6; Charlson 1987 original weighted index; max 37; 1-year mortality groups 0 / 1-2 / 3-4 / >=5; flags independent

Citation

Title: A new method of classifying prognostic comorbidity in longitudinal studies: development and validation
Authors: Charlson ME, Pompei P, Ales KL, MacKenzie CR
Source: J Chronic Dis. 1987;40(5):373-383
DOI: 10.1016/0021-9681(87)90171-8

Worked example

No comorbidities

Given: aids=falseany_tumor=falsecerebrovascular_disease=falsechronic_pulmonary_disease=falsecongestive_heart_failure=falseconnective_tissue_disease=falsedementia=falsediabetes=falsediabetes_end_organ=falsehemiplegia=falseleukemia=falselymphoma=falsemetastatic_solid_tumor=falsemild_liver_disease=falsemoderate_severe_liver_disease=falsemoderate_severe_renal_disease=falsemyocardial_infarction=falsepeptic_ulcer_disease=falseperipheral_vascular_disease=false

All 19 flags false
score = 0
charlson_band = score_0

Metastatic solid tumor only

Given: aids=falseany_tumor=falsecerebrovascular_disease=falsechronic_pulmonary_disease=falsecongestive_heart_failure=falseconnective_tissue_disease=falsedementia=falsediabetes=falsediabetes_end_organ=falsehemiplegia=falseleukemia=falselymphoma=falsemetastatic_solid_tumor=truemild_liver_disease=falsemoderate_severe_liver_disease=falsemoderate_severe_renal_disease=falsemyocardial_infarction=falsepeptic_ulcer_disease=falseperipheral_vascular_disease=false

metastatic_solid_tumor → 6
score = 6
charlson_band = score_ge_5

Also searched as

Charlson comorbidity index
CCI
Charlson score
Charlson 1987
Charlson weighted index
original Charlson index
comorbidity index Charlson

Try

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

/api/calc/charlson?myocardial_infarction=false&congestive_heart_failure=false&peripheral_vascular_disease=false&cerebrovascular_disease=false&dementia=false&chronic_pulmonary_disease=false&connective_tissue_disease=false&peptic_ulcer_disease=false&mild_liver_disease=false&diabetes=false&hemiplegia=false&moderate_severe_renal_disease=false&diabetes_end_organ=false&any_tumor=false&leukemia=false&lymphoma=false&moderate_severe_liver_disease=false&metastatic_solid_tumor=false&aids=false

Full URL: https://api.magentlab.com/api/calc/charlson?myocardial_infarction=false&congestive_heart_failure=false&peripheral_vascular_disease=false&cerebrovascular_disease=false&dementia=false&chronic_pulmonary_disease=false&connective_tissue_disease=false&peptic_ulcer_disease=false&mild_liver_disease=false&diabetes=false&hemiplegia=false&moderate_severe_renal_disease=false&diabetes_end_organ=false&any_tumor=false&leukemia=false&lymphoma=false&moderate_severe_liver_disease=false&metastatic_solid_tumor=false&aids=false

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/charlson?myocardial_infarction=false&congestive_heart_failure=false&peripheral_vascular_disease=false&cerebrovascular_disease=false&dementia=false&chronic_pulmonary_disease=false&connective_tissue_disease=false&peptic_ulcer_disease=false&mild_liver_disease=false&diabetes=false&hemiplegia=false&moderate_severe_renal_disease=false&diabetes_end_organ=false&any_tumor=false&leukemia=false&lymphoma=false&moderate_severe_liver_disease=false&metastatic_solid_tumor=false&aids=false"

Parameters

Name	Type	Required	Description
`myocardial_infarction`	boolean	required	Myocardial infarction as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose infarction.
`congestive_heart_failure`	boolean	required	Congestive heart failure as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose heart failure.
`peripheral_vascular_disease`	boolean	required	Peripheral vascular disease as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose vascular disease.
`cerebrovascular_disease`	boolean	required	Cerebrovascular disease as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose stroke or TIA.
`dementia`	boolean	required	Dementia as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose dementia.
`chronic_pulmonary_disease`	boolean	required	Chronic pulmonary disease as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose lung disease.
`connective_tissue_disease`	boolean	required	Connective tissue disease as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose connective-tissue disease.
`peptic_ulcer_disease`	boolean	required	Peptic ulcer disease as assigned by the caller (Charlson 1987). true scores 1. magent does not diagnose ulcer disease.
`mild_liver_disease`	boolean	required	Mild liver disease as assigned by the caller (Charlson 1987). true scores 1. magent does not grade liver disease.
`diabetes`	boolean	required	Diabetes without end-organ damage as assigned by the caller (Charlson 1987). true scores 1. Independent of diabetes_end_organ. magent does not diagnose diabetes.
`hemiplegia`	boolean	required	Hemiplegia as assigned by the caller (Charlson 1987). true scores 2. magent does not diagnose hemiplegia.
`moderate_severe_renal_disease`	boolean	required	Moderate or severe renal disease as assigned by the caller (Charlson 1987). true scores 2. magent does not grade kidney disease.
`diabetes_end_organ`	boolean	required	Diabetes with end-organ damage as assigned by the caller (Charlson 1987). true scores 2. Independent of diabetes. magent does not diagnose diabetes.
`any_tumor`	boolean	required	Any tumor (solid tumor without metastasis) as assigned by the caller (Charlson 1987). true scores 2. Independent of metastatic_solid_tumor. magent does not diagnose cancer.
`leukemia`	boolean	required	Leukemia as assigned by the caller (Charlson 1987). true scores 2. magent does not diagnose leukemia.
`lymphoma`	boolean	required	Lymphoma as assigned by the caller (Charlson 1987). true scores 2. magent does not diagnose lymphoma.
`moderate_severe_liver_disease`	boolean	required	Moderate or severe liver disease as assigned by the caller (Charlson 1987). true scores 3. Independent of mild_liver_disease. magent does not grade liver disease.
`metastatic_solid_tumor`	boolean	required	Metastatic solid tumor as assigned by the caller (Charlson 1987). true scores 6. Independent of any_tumor. magent does not diagnose cancer.
`aids`	boolean	required	AIDS as assigned by the caller (Charlson 1987). true scores 6. magent does not diagnose AIDS.

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/charlson 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": [
    {
      "aids": "false",
      "any_tumor": "false",
      "cerebrovascular_disease": "false",
      "chronic_pulmonary_disease": "false",
      "congestive_heart_failure": "false",
      "connective_tissue_disease": "false",
      "dementia": "false",
      "diabetes": "false",
      "diabetes_end_organ": "false",
      "hemiplegia": "false",
      "leukemia": "false",
      "lymphoma": "false",
      "metastatic_solid_tumor": "false",
      "mild_liver_disease": "false",
      "moderate_severe_liver_disease": "false",
      "moderate_severe_renal_disease": "false",
      "myocardial_infarction": "false",
      "peptic_ulcer_disease": "false",
      "peripheral_vascular_disease": "false"
    },
    {
      "aids": "false",
      "any_tumor": "false",
      "cerebrovascular_disease": "false",
      "chronic_pulmonary_disease": "false",
      "congestive_heart_failure": "false",
      "connective_tissue_disease": "false",
      "dementia": "false",
      "diabetes": "false",
      "diabetes_end_organ": "false",
      "hemiplegia": "false",
      "leukemia": "false",
      "lymphoma": "false",
      "metastatic_solid_tumor": "false",
      "mild_liver_disease": "false",
      "moderate_severe_liver_disease": "false",
      "moderate_severe_renal_disease": "false",
      "myocardial_infarction": "false",
      "peptic_ulcer_disease": "false",
      "peripheral_vascular_disease": "false"
    }
  ]
}

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/charlson",
  "items": [
    {
      "components": [
        {
          "factor": "myocardial_infarction",
          "points": 0,
          "present": false
        },
        {
          "factor": "congestive_heart_failure",
          "points": 0,
          "present": false
        },
        {
          "factor": "peripheral_vascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "cerebrovascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "dementia",
          "points": 0,
          "present": false
        },
        {
          "factor": "chronic_pulmonary_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "connective_tissue_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "peptic_ulcer_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "mild_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemiplegia",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_renal_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes_end_organ",
          "points": 0,
          "present": false
        },
        {
          "factor": "any_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "leukemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "lymphoma",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "metastatic_solid_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "aids",
          "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": "Charlson ME, Pompei P, Ales KL, MacKenzie CR",
        "doi": "10.1016/0021-9681(87)90171-8",
        "id": "charlson-1987",
        "pmid": "3558716",
        "source": "J Chronic Dis. 1987;40(5):373-383",
        "title": "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation"
      },
      "formula": "charlson",
      "formula_expression": "CCI = myocardial_infarction 1 + congestive_heart_failure 1 + peripheral_vascular_disease 1 + cerebrovascular_disease 1 + dementia 1 + chronic_pulmonary_disease 1 + connective_tissue_disease 1 + peptic_ulcer_disease 1 + mild_liver_disease 1 + diabetes 1 + hemiplegia 2 + moderate_severe_renal_disease 2 + diabetes_end_organ 2 + any_tumor 2 + leukemia 2 + lymphoma 2 + moderate_severe_liver_disease 3 + metastatic_solid_tumor 6 + aids 6; Charlson 1987 original weighted index; max 37; 1-year mortality groups 0 / 1-2 / 3-4 / >=5; flags independent",
      "max_score": 37,
      "score": 0,
      "charlson_band": "score_0"
    },
    {
      "components": [
        {
          "factor": "myocardial_infarction",
          "points": 0,
          "present": false
        },
        {
          "factor": "congestive_heart_failure",
          "points": 0,
          "present": false
        },
        {
          "factor": "peripheral_vascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "cerebrovascular_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "dementia",
          "points": 0,
          "present": false
        },
        {
          "factor": "chronic_pulmonary_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "connective_tissue_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "peptic_ulcer_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "mild_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes",
          "points": 0,
          "present": false
        },
        {
          "factor": "hemiplegia",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_renal_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "diabetes_end_organ",
          "points": 0,
          "present": false
        },
        {
          "factor": "any_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "leukemia",
          "points": 0,
          "present": false
        },
        {
          "factor": "lymphoma",
          "points": 0,
          "present": false
        },
        {
          "factor": "moderate_severe_liver_disease",
          "points": 0,
          "present": false
        },
        {
          "factor": "metastatic_solid_tumor",
          "points": 0,
          "present": false
        },
        {
          "factor": "aids",
          "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": "Charlson ME, Pompei P, Ales KL, MacKenzie CR",
        "doi": "10.1016/0021-9681(87)90171-8",
        "id": "charlson-1987",
        "pmid": "3558716",
        "source": "J Chronic Dis. 1987;40(5):373-383",
        "title": "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation"
      },
      "formula": "charlson",
      "formula_expression": "CCI = myocardial_infarction 1 + congestive_heart_failure 1 + peripheral_vascular_disease 1 + cerebrovascular_disease 1 + dementia 1 + chronic_pulmonary_disease 1 + connective_tissue_disease 1 + peptic_ulcer_disease 1 + mild_liver_disease 1 + diabetes 1 + hemiplegia 2 + moderate_severe_renal_disease 2 + diabetes_end_organ 2 + any_tumor 2 + leukemia 2 + lymphoma 2 + moderate_severe_liver_disease 3 + metastatic_solid_tumor 6 + aids 6; Charlson 1987 original weighted index; max 37; 1-year mortality groups 0 / 1-2 / 3-4 / >=5; flags independent",
      "max_score": 37,
      "score": 0,
      "charlson_band": "score_0"
    }
  ]
}

Response

Field	Type	Description
`formula`	string	charlson
`formula_expression`	string	Exact expression used
`score`	integer	Charlson 1987 points 0-37
`max_score`	integer	37
`charlson_band`	string	Charlson 1987 1-year mortality group: score_0 (0), score_1_2 (1-2), score_3_4 (3-4), or score_ge_5 (≥5). A group, not a diagnosis.
`components`	array	Per-flag points
`citation`	object	Charlson et al. J Chronic Dis 1987 citation
`disclaimer`	string	Not-a-device notice

Example JSON

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

{
  "components": [
    {
      "factor": "myocardial_infarction",
      "points": 0,
      "present": false
    },
    {
      "factor": "congestive_heart_failure",
      "points": 0,
      "present": false
    },
    {
      "factor": "peripheral_vascular_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "cerebrovascular_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "dementia",
      "points": 0,
      "present": false
    },
    {
      "factor": "chronic_pulmonary_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "connective_tissue_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "peptic_ulcer_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "mild_liver_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "diabetes",
      "points": 0,
      "present": false
    },
    {
      "factor": "hemiplegia",
      "points": 0,
      "present": false
    },
    {
      "factor": "moderate_severe_renal_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "diabetes_end_organ",
      "points": 0,
      "present": false
    },
    {
      "factor": "any_tumor",
      "points": 0,
      "present": false
    },
    {
      "factor": "leukemia",
      "points": 0,
      "present": false
    },
    {
      "factor": "lymphoma",
      "points": 0,
      "present": false
    },
    {
      "factor": "moderate_severe_liver_disease",
      "points": 0,
      "present": false
    },
    {
      "factor": "metastatic_solid_tumor",
      "points": 0,
      "present": false
    },
    {
      "factor": "aids",
      "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": "Charlson ME, Pompei P, Ales KL, MacKenzie CR",
    "doi": "10.1016/0021-9681(87)90171-8",
    "id": "charlson-1987",
    "pmid": "3558716",
    "source": "J Chronic Dis. 1987;40(5):373-383",
    "title": "A new method of classifying prognostic comorbidity in longitudinal studies: development and validation"
  },
  "formula": "charlson",
  "formula_expression": "CCI = myocardial_infarction 1 + congestive_heart_failure 1 + peripheral_vascular_disease 1 + cerebrovascular_disease 1 + dementia 1 + chronic_pulmonary_disease 1 + connective_tissue_disease 1 + peptic_ulcer_disease 1 + mild_liver_disease 1 + diabetes 1 + hemiplegia 2 + moderate_severe_renal_disease 2 + diabetes_end_organ 2 + any_tumor 2 + leukemia 2 + lymphoma 2 + moderate_severe_liver_disease 3 + metastatic_solid_tumor 6 + aids 6; Charlson 1987 original weighted index; max 37; 1-year mortality groups 0 / 1-2 / 3-4 / >=5; flags independent",
  "max_score": 37,
  "score": 0,
  "charlson_band": "score_0"
}

Client errors (HTTP 400)

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

HTTP	Code	When
400	`invalid_flag`	boolean clinical flags must be true or false 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

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. 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.
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.