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Emergency Department “H” Codes – Quick Lookup (Time Period → H-Code → Fee → Key Rule)

Summary / Description: Quick lookup for Emergency Department “H” assessment codes by time period, plus ED-physician premiums and after-hours procedure premiums. Use this to pick the right H-code and confirm the key payment rules.

Emergency Department “H” Codes – Quick Lookup

What time periods does OHIP use for ED “H” codes?

  • Weekday daytime: 08:00–17:00

  • Weekday evening: 17:00–24:00

  • Weekend / Holiday: 08:00–24:00

  • Night: 00:00–08:00

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Holiday note (for “H” prefix ED listings): the SoB defines “holiday” for H-code ED services to include named holidays and December 25 through December 31 (inclusive), plus specific substitution days when Christmas or New Year’s falls on a weekend.

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Quick Lookup Table: ED Assessments (Time Period → H-Code → Fee → Key Rule)

Time periodService typeH-codeFee ($)Key rule (plain English)
Weekday 08:00–17:00Minor assessmentH10117.10Use for ED “minor” assessment in weekday daytime.
Weekday 08:00–17:00Comprehensive assessmentH10243.05Use for ED “comprehensive” assessment in weekday daytime.
Weekday 08:00–17:00Multi-system assessmentH10340.00Use for ED “multi-system” assessment in weekday daytime.
Weekday 08:00–17:00Re-assessmentH10417.10Use only if the re-assessment rules are met (see below).
Weekday 17:00–24:00Minor assessmentH13120.95Same service as H101, but for weekday evening.
Weekday 17:00–24:00Comprehensive assessmentH13252.55Same service as H102, but for weekday evening.
Weekday 17:00–24:00Multi-system assessmentH13347.45Same service as H103, but for weekday evening.
Weekday 17:00–24:00Re-assessmentH13420.95Same service as H104, but for weekday evening.
Weekend/Holiday 08:00–24:00Minor assessmentH15126.35Same service as H101, but for weekend/holiday.
Weekend/Holiday 08:00–24:00Comprehensive assessmentH15266.15Same service as H102, but for weekend/holiday.
Weekend/Holiday 08:00–24:00Multi-system assessmentH15358.90Same service as H103, but for weekend/holiday.
Weekend/Holiday 08:00–24:00Re-assessmentH15426.35Same service as H104, but for weekend/holiday.
Night 00:00–08:00Minor assessmentH12130.70Same service as H101, but for nights.
Night 00:00–08:00Comprehensive assessmentH12276.95Same service as H102, but for nights.
Night 00:00–08:00Multi-system assessmentH12368.00Same service as H103, but for nights.
Night 00:00–08:00Re-assessmentH12430.70Same service as H104, but for nights.

Source table for the above H-codes, time periods, and fees.

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Key Rule: When can I bill an ED “H” re-assessment (H104/H134/H154/H124)?

Re-assessment is only for the same problem when the patient is still in the ED and needs further assessment. Key rules include:

  • Must be at least 2 hours after the previous assessment by the same physician.

  • Must be for the same presenting complaint/diagnosis that has not yet resolved.

  • Not eligible if it is done for discharge purposes only.

  • Not eligible if the ED physician admits the patient.

  • Not eligible if the re-assessment is immediately followed by a referral/consult, and the referral is billed.

  • Maximums: no more than 3 ED re-assessments per patient per day, and no more than 2 per physician per patient per day.

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Quick Lookup Table: ED Premiums (NOT an assessment) – H112 / H113

Time periodPremium codeFee ($)Key rule
Night 00:00–08:00H11235.15Payable only if another service is rendered during premium hours; ED assessments may not be claimed during premium hours when using this premium rule.
Sat/Sun/Holiday 08:00–24:00H11320.35Same rule as H112, but for Sat/Sun/holiday daytime/evening.

Premium amounts and the core payment rule (premium payable only when another service is rendered; assessments may not be claimed during premium hours) are stated in the SoB table notes.

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Quick Lookup Table: After-Hours Procedure Premiums for ED Physicians (E412 / E413)

Time periodPremium codeAddsKey rule
Mon–Fri 17:00–24:00 OR Sat/Sun/Holiday 07:00–24:00E412+20%Only for procedures rendered by an Emergency Department Physician who is required to submit claims using “H” prefix emergency services.
Night 00:00–07:00E413+40%Same eligibility rule as E412.

Important payment rule: E409/E410 are NOT payable for procedures rendered by an Emergency Department Physician; E412/E413 are the ED-physician versions (and only payable when the ED physician is required to use “H” prefix emergency services).