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L1843

Ko single upright pre cst

Knee orthosis, single upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise

Code system
HCPCS Level II
Status
Active
Billable
Yes
In effect from
1998-01-01
Request
curl https://api.healthcare.dev/v1/codes/hcpcs/L1843 \
  -H "Authorization: Bearer $HDEV_API_KEY"
200 OK · application/json
{
  "data": {
    "code": "L1843",
    "parent": null,
    "status": "active",
    "system": "hcpcs",
    "display": "Ko single upright pre cst",
    "billable": true,
    "attributes": {
      "betos": "D1F",
      "coverage": "C",
      "action_code": "N",
      "type_of_service": "P",
      "pricing_indicator": "38",
      "action_effective_date": "2014-01-01"
    },
    "description": "Knee orthosis, single upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise",
    "replaced_by": [],
    "effective_end": null,
    "effective_start": "1998-01-01",
    "care_categories": [
      "braces-and-orthotics"
    ],
    "care_category_details": [
      {
        "slug": "braces-and-orthotics",
        "name": "Braces and orthotics",
        "confidence": 0.9,
        "derivation": "source_stated",
        "evidence": [
          {
            "url": "https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system/quarterly-update",
            "anchor": "HCPCS Level II range L0100-L4999"
          }
        ],
        "as_of": "2026-10-01T00:00:00.000Z"
      }
    ]
  },
  "meta": {
    "source": "cms-hcpcs",
    "data_version": "2026-10"
  }
}

CMS attributes

L1843 in the HCPCS file

betos
D1F
coverage
C
action code
N
type of service
P
pricing indicator
38
action effective date
2014-01-01

Change history

Lifecycle

L1843 has been in effect since 1998-01-01. This page shows HCPCS Level II release 2026-10.

Add as_of=YYYY-MM-DD to the request to get this code exactly as it was on a past date. The change feed (GET /v1/changes) lists what each release added, changed or retired across the whole dataset; a per-code change list isn't published yet.

Use it

Look up L1843 from code or an agent

curl
curl https://api.healthcare.dev/v1/codes/hcpcs/L1843 \
  -H "Authorization: Bearer $HDEV_API_KEY"
MCP prompt
Using the healthcare.dev MCP server, look up HCPCS Level II code L1843. Tell me what it covers, whether it is active and since when, and any CMS attributes it has.

Source: CMS, release 2026-10. Public domain (D-series CDT codes excluded). Reference data, not medical or billing advice.