The official technical specification for healthcare facilities to submit standardized patient visits, clinical encounters, and diagnoses to Cambodia's Digital Payment Certification System.
A deterministic workflow connecting your Electronic Medical Record system to the NPCA Payment Certification platform.
Obtain a short-lived Bearer access token using facility credentials via OAuth 2.0 password grant.
Validate patient entitlement status against HEF or NSSF central registries before admission.
Transmit outpatient (OPD) or inpatient (IPD) clinical records including vital signs and diagnoses.
Audit by calling the processed endpoint to verify whether the submission succeeded or failed, as the initial status is acceptance only.
All submitted records must conform to official healthcare coding standards and temporal constraints.
All encounter timestamps must include the explicit +07:00 offset (for example, 2026-03-15T08:30:00.000+07:00).
Patient addresses must follow official administrative codes for province, district, commune, and village.
Primary and secondary diagnoses must use valid WHO ICD-10 category and subcategory code strings.
{
"health_facility_code": "HF-010204",
"patient_code": "PT029206",
"code": "VIS071315",
"visit_type": "OPD",
"admitted_at": "2026-03-15T08:30:00.000+07:00",
"patient": {
"surname": "សុខ",
"name": "វិបុល",
"sex": "M",
"spid": "1234567890",
"address": { "commune": "120801" }
},
"triages": [
{ "code": "TR062209", "chief_complaint": "Abdominal pain" }
],
"vital_signs": [
{ "observations": [{ "name": "Heart Rate", "value": 78 }] }
]
}Access the complete technical specification, explore the interactive endpoint documentation, or download the official offline Excel workbooks.