Description
Separate gaps and overlaps between end-exclusive health-coverage periods.
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.
Separate gaps and overlaps between end-exclusive health-coverage periods.
When to use this tool
Use Health Care Enrollment Gap Days when checking the stated caller-defined policy, benefit, directory or period convention.
How to use the tool and how it works
- Enter priorCoverageEndExclusive, nextCoverageStart. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedGapDays, uncoveredDays, overlapDays. Use the output convention below.
Parse next start and prior excluded end as real YYYY-MM-DD dates. Signed gap=nextStart-priorEnd in UTC days; report positive uncovered days and positive overlap days separately.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| priorCoverageEndExclusive | First day no longer in the previous supplied coverage interval. | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| nextCoverageStart | Next Coverage Start | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedGapDays | Next start minus prior excluded end; positive gap, negative overlap, zero contiguous boundaries. | Required. Finite number. |
| uncoveredDays | Uncovered Days | Required. Finite number. |
| overlapDays | Overlap Days | Required. Finite number. |
{
"input": {
"priorCoverageEndExclusive": "2026-10-01",
"nextCoverageStart": "2026-10-05"
},
"output": {
"signedGapDays": 4,
"uncoveredDays": 4,
"overlapDays": 0
}
}Limitations and assumptions
- Equal boundaries mean no gap or overlap; actual insurance coverage and benefit eligibility are not verified.
- 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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