Skip to content
healthcare.dev

C9399

Unclassified drugs or biolog

Unclassified drugs or biologicals

Code system
HCPCS Level II
Status
Active
Billable
Yes
In effect from
2004-01-01
Request
curl https://api.healthcare.dev/v1/codes/hcpcs/C9399 \
  -H "Authorization: Bearer $HDEV_API_KEY"
200 OK · application/json
{
  "data": {
    "code": "C9399",
    "parent": null,
    "status": "active",
    "system": "hcpcs",
    "display": "Unclassified drugs or biolog",
    "billable": true,
    "attributes": {
      "betos": "O1E",
      "coverage": "D",
      "action_code": "N",
      "type_of_service": "1",
      "pricing_indicator": "53",
      "action_effective_date": "2004-01-01"
    },
    "description": "Unclassified drugs or biologicals",
    "replaced_by": [],
    "effective_end": null,
    "effective_start": "2004-01-01",
    "care_categories": [
      "medications-given-by-a-provider"
    ],
    "care_category_details": [
      {
        "slug": "medications-given-by-a-provider",
        "name": "Medications given by a provider",
        "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 BETOS type of service O1E"
          }
        ],
        "as_of": "2026-10-01T00:00:00.000Z"
      }
    ]
  },
  "meta": {
    "source": "cms-hcpcs",
    "data_version": "2026-10"
  }
}

CMS attributes

C9399 in the HCPCS file

betos
O1E
coverage
D
action code
N
type of service
1
pricing indicator
53
action effective date
2004-01-01

Change history

Lifecycle

C9399 has been in effect since 2004-01-01. 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 C9399 from code or an agent

curl
curl https://api.healthcare.dev/v1/codes/hcpcs/C9399 \
  -H "Authorization: Bearer $HDEV_API_KEY"
MCP prompt
Using the healthcare.dev MCP server, look up HCPCS Level II code C9399. 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.