Description
Check whether a date falls within a supplied half-open rule-effective period.
Health-policy records use explicit benefit codes, payment units, directory dates and administrative periods. A supplied cap, deductible or covered-code list defines a bookkeeping scenario; determining actual eligibility or obligations requires the governing policy. Date boundaries, currency bases and distance units must remain explicit.
Check whether a date falls within a supplied half-open rule-effective period.
When to use this tool
Use Health Care Rule Effective Date when checking the stated caller-defined policy, benefit, directory or period convention.
How to use the tool and how it works
- Enter effectiveDate, expiryDateExclusive, asOfDate. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read activeUnderDates. Inspect activeUnderDates before interpreting the associated values.
Parse real YYYY-MM-DD dates and require expiryDateExclusive>=effectiveDate. activeUnderDates tests effective<=asOf<expiry.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| effectiveDate | Effective Date | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| expiryDateExclusive | Excluded end date; equal effective/expiry dates define an empty active interval. | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| asOfDate | Real YYYY-MM-DD date under the UTC calendar convention specified above. | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| activeUnderDates | Active Under Dates | Required. Boolean. |
{
"input": {
"effectiveDate": "2026-01-01",
"expiryDateExclusive": "2027-01-01",
"asOfDate": "2026-11-01"
},
"output": {
"activeUnderDates": true
}
}Limitations and assumptions
- An empty interval is never active; date membership alone does not establish applicability of a health-care rule or current law.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Consult authoritative current policy and verified source records with the responsible health, financial or legal professionals for actual eligibility, obligations or access decisions.
References
Similar or alternative tools
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