Repl batt pulse gen sys
Replacement battery for patient-owned ear pulse generator, each
curl https://api.healthcare.dev/v1/codes/hcpcs/A4638 \ -H "Authorization: Bearer $HDEV_API_KEY"
{
"data": {
"code": "A4638",
"parent": null,
"status": "active",
"system": "hcpcs",
"display": "Repl batt pulse gen sys",
"billable": true,
"attributes": {
"betos": "D1E",
"coverage": "C",
"action_code": "N",
"type_of_service": "P",
"pricing_indicator": "32",
"action_effective_date": "2004-01-01"
},
"description": "Replacement battery for patient-owned ear pulse generator, each",
"replaced_by": [],
"effective_end": null,
"effective_start": "2004-01-01",
"care_categories": [
"hospital-beds"
],
"care_category_details": [
{
"slug": "hospital-beds",
"name": "Hospital beds and support surfaces",
"confidence": 0.95,
"derivation": "source_stated",
"evidence": [
{
"url": "https://www.cms.gov/medicare/coding-billing/healthcare-common-procedure-system/quarterly-update",
"anchor": "HCPCS Level II range A4638-A4640"
}
],
"as_of": "2026-10-01T00:00:00.000Z"
}
]
},
"meta": {
"source": "cms-hcpcs",
"data_version": "2026-10"
}
}CMS attributes
Change history
A4638 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
curl https://api.healthcare.dev/v1/codes/hcpcs/A4638 \ -H "Authorization: Bearer $HDEV_API_KEY"
Using the healthcare.dev MCP server, look up HCPCS Level II code A4638. 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.