Observation Services - Facility
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Defines reimbursement requirements and billing rules for facility-based outpatient observation services provided to Blue Cross Blue Shield - Maine members, including documentation, billing codes, and appropriate/inappropriate uses.
Updated language with guidelines for reimbursement and nonreimbursement; added code list to related coding section; updated Definitions section by adding Type of Bills and updating Observation.
Coverage Criteria for Observation Services
Eligibility and billing criteria for observation reimbursement
Observation services may be eligible for reimbursement when billed and documented per policy and when one or more clinical criteria are met:
ANY of the following
ALL of the following
- Active care or further observation is needed following emergency room care to determine if the member is stabilized.
ALL of the following
- Complication from an outpatient surgical procedure requiring additional recovery time beyond normal recovery.
ALL of the following
- Care required is initially at or near the inpatient level.
ALL of the following
- Further diagnostic testing and/or observation is required to make a diagnosis and establish appropriate treatment protocol.
ALL of the following
- Short term medical intervention of facility staff requiring the direction of a physician.
ALL of the following
- Written order that clearly states 'admit to observation' and documentation of specific problem, treatment, and expected frequency of skilled service.
ALL of the following
- Revenue code 0762 billed with type of bill 013X, 078X, or 085X and HCPCS G0378; all observation services billed on one claim line with no date span and total hours specified.
ALL of the following
- Reimbursement is as specified in the Plan Compensation Schedule or facility agreement; if agreement does not provide separate reimbursement for observation, facility may not separately bill for it.
Inappropriate uses for observation services
Uses of observation considered inappropriate (not eligible for separate observation reimbursement):
ANY of the following
- Physician, member, and/or family convenience.
- Routine preparation and recovery for diagnostic, therapeutic or surgical procedures; routine recovery and post-operative care after outpatient surgery; standing orders following outpatient surgery; observation following an uncomplicated treatment or procedure.
- Social issues, blood administration, cases routinely cared for the Emergency Room or Outpatient Department.
Admission Criteria — Hospital Outpatient / Observation Unit
hospital outpatient / observation unit
Criteria for admission to hospital outpatient / observation unit:
ANY of the following
ALL of the following
- Physician or authorized individual orders observation with a written 'admit to observation' order and documentation supports need for observation.
ALL of the following
- Member requires observation to determine if inpatient admission is necessary.
ALL of the following
- Revenue code 0762 must be billed with type of bill 013X, 078X, or 085X and HCPCS G0378; all observation services must be billed on one claim line with no date span and the total number of hours specified.
Criteria for Continued Observation Stay
observation
Criteria for continued observation stay:
ALL of the following
- Ongoing active care or further observation is needed to reach a decision on admission versus discharge.
Discharge Criteria
Discharge from observation status is appropriate when the member is stabilized and no longer requires observation-level services, at which point they may be discharged or, if clinically indicated, admitted as an inpatient. Documentation should reflect the clinical decision supporting discharge or conversion to inpatient care, consistent with the requirement that observation services have a duration of at least 8 hours and no more than 48 hours and that the written order originally stated 'admit to observation' with the specific problem and expected skilled-service frequency.
Coding — Observation-Related Codes and Billing Rules
| G0378 | Hospital observation service, per hour |
| G0379 | Direct admission of patient for hospital observation care |
| G0380 | Level 1 hospital emergency department visit (type B ED) |
| G0381 | Level 2 hospital emergency department visit (type B ED) |
| G0382 | Level 3 hospital emergency department visit (type B ED) |
| G0383 | Level 4 hospital emergency department visit (type B ED) |
| G0384 | Level 5 hospital emergency department visit (type B ED) |
| G0463 | Hospital outpatient clinic visit for assessment and management |
| 99281 | ED visit, minimal |
| 99282 | ED visit, requires medically appropriate history/examination and straightforward medical decision making |
Ordering, Documentation, Billing, and Reimbursement Conditions
Order and documentation required for observation; include required billing elements
Observation must be ordered by a physician or other authorized individual and documented with a written order that clearly states “admit to observation,” including documentation of the specific problem, treatment, and expected frequency of skilled service. Observation status must meet the policy duration requirement (minimum 8 hours and maximum 48 hours) and billing must include revenue code 0762 with the appropriate type of bill and HCPCS G0378 as specified by the policy.
- Written order must state “admit to observation” and document specific problem, treatment, and expected frequency of skilled service.
- Observation status must be at least 8 hours and no more than 48 hours.
- Billing must include revenue code 0762 and HCPCS G0378 with the appropriate type of bill (013X, 078X, or 085X).
Reimbursement depends on the facility’s agreement with the health plan
Reimbursement for observation services is governed by the facility’s agreement with the health plan; if the facility’s agreement does not provide for separate reimbursement for observation services, the facility may not separately bill for or seek reimbursement for those services under this policy.
- This policy does not modify the terms of the facility’s contract with the health plan.
- Separate billing for observation is prohibited when the facility agreement does not provide separate reimbursement.
Definitions and Billing Terminology
Policy Revision History
Policy changes approved 07/01/2026 became effective, including updated reimbursement and nonreimbursement language, added code list, and updated Definitions (Type of Bills and Observation).
Review approved and changes authorized on 07/01/2026 to update policy language, coding list, and Definitions prior to the 10/01/2026 effective date.
Review approved with minor language changes.
Review approved with updates to policy language and definitions.
Review approved; added definition and new template.
Review approved; revised definition of observation care and added required documentation verbiage to policy body.
Initial approval and effective date of the policy.
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