HCPCS Lookup JSON API

Every HCPCS Level II code page on HCPCSLookup.com is also available as machine-readable JSON. No API key. No registration. Rate-limited at 120 requests per minute per IP.

Endpoint

GET https://hcpcslookup.com/api/codes/{CODE}.json

Where {CODE} is a HCPCS Level II code (letter + 4 digits), e.g. J0129, E0601, A4253.

Example

curl https://hcpcslookup.com/api/codes/J0129.json

Try it now: https://hcpcslookup.com/api/codes/J0129.json

Response fields

• code, short_description, long_description
• status (active / deleted / changed)
• section, category
• effective_date, termination_date
• replacement_code (when a deleted code has a known successor)
• opps_status_indicator + opps_status_label
• opps_apc (the OPPS Ambulatory Payment Classification group)
• fee_schedules — array of {schedule_type, year, rate_facility, rate_non_facility} for each fee schedule
• mue — array of {service_type, mue_value, adjudication_indicator, ...} for each MUE service type
• drug_classes — array of {name, slug} (J-codes only, where curated)
• ndc_crosswalk — array of {ndc, drug_name, dosage, unit, labeler_name}
• utilization — array of {year, services_count, beneficiaries_count, total_payment_amount, ...}
• urls — links to the HTML and JSON views of this code

Caching

Responses are Cache-Control: public, max-age=86400. The data underneath changes quarterly when CMS publishes new HCPCS releases.

CORS

Responses include Access-Control-Allow-Origin: * — safe to call from browser-side JavaScript.

Terms

The API is provided as-is for non-commercial reference use. For commercial / high-volume use, contact us — we may move to a paid tier with SLAs and higher rate limits.

Underlying CMS HCPCS data is in the public domain. See our Data Sources page for source attribution.