C.22.PFR:4.5 - Keep world-side occurrence and current boundary claim separate

Use [adverseEpisodeStart, open] only in a current claim whose evidence supports that this same PFR occurrence still obtains at the claim’s stated reference time. open is a claim-side endpoint sentinel, not the clock time, an identity field, or a substitute for missing evidence. The stable occurrence reference remains unchanged when a later claim records the recovered actual end.

A current assertion or description distinguishes three cases in ordinary words:

• supported current: the evidence supports continuous adverse obtaining from the episode’s actual inception through the stated reference time; publish [adverseEpisodeStart, open];
• supported closed: the evidence supports actual cessation at an exact boundary; publish [adverseEpisodeStart, adverseEpisodeEnd] for the same occurrence reference;
• continuity unresolved: the available evidence does not decide whether an unobserved cessation or restart occurred; retain the recoverable earlier occurrence reference and the supported segments, but assert neither one continuous occurrence nor two occurrences across the gap.

Later evidence may revise the assertion, including its claimed start, end, or continuity, without creating or changing the world-side episode. If it supports an earlier actual cessation, complete the extent of the earlier occurrence at that boundary. If it also supports later renewed adverse truth, identify the later occurrence from its own actual inception. Until that distinction is supported, do not attach the later adverse segment to either the old or a new occurrence by default.

Use the A-B-C regression while holding one continuously obtaining applicability occurrence fixed. The criterion remains governing for the same entity, scope, and declared window through A, B, and C; only world-side adverse truth changes:

• During A, the condition is actually adverse, so the first PFR obtains from A.start until its actual cessation at A.end.
• During B, the condition is actually non-adverse, so the first PFR does not obtain.
• During C, the condition is actually adverse again, so a later PFR begins at C.start with the same two participant references and a different stable occurrence reference.

Evidence that supports A, B, and C warrants the corresponding two-occurrence assertion. A missing assessment, unavailable measurement, stale evidence item, or support gap warrants continuity unresolved; it neither proves recovery nor licenses continuity. Adjacent or overlapping assessment windows likewise do not split or join world-side episodes by themselves.