One encounter → one service → one claim line item.

Typical for outpatient and lower levels of care.

Multiple encounters → one combined service → one claim line item.

Used at IOP/PHP for daily bundled billing.

Requirements: same date of service, same rendering provider, same CPT code, same modifiers.

Encounter type does not need to match across encounters.

Cannot cross date-of-service boundaries.

Service created without a corresponding encounter.

Used for residential and detox programs where clients are present but no clinical encounter is documented (e.g., weekends).

Services do not generate immediately — they run on a nightly sweep. If you've just made a change, allow until the following day for autogen services to appear.

Multiple autogen rules can run simultaneously for the same client on the same day.