HCPCS G0378
Observation care, per hour
Hourly hospital charge for observation: you stayed in a bed, sometimes overnight, but were never formally admitted as an inpatient. On the bill it appears as G0378 with revenue code 0762, with the number of hours as the units.
Where this line goes wrong
Observation is outpatient, and that changes what you owe
An observation stay is billed as an outpatient service even if you were there for two nights. Your outpatient cost sharing applies, and for Medicare patients the days do not count toward the three inpatient days needed for a covered nursing home stay. Hospitals must give Medicare patients a written notice (the MOON) if observation runs past 24 hours.
Count the hours
The units should match the clock from the observation order to discharge. Hours before the order was written, and time in the ER before that, are not observation hours.
Room and drug lines stack on top
Observation is often accompanied by pharmacy (0250), IV solutions and supplies. Those are legitimate lines, but a long observation stay is where line-level errors accumulate, so ask for the itemized bill.
Check it, then ask
- 1
Ask for the observation order time and the discharge time and check the billed hours against them.
- 2
If you are insured, check the claim was processed as outpatient and ask about your outpatient cost sharing.
- 3
If you are on Medicare, check whether you were given the MOON notice and what it said.
- 4
Ask whether any of the observation time should have been an inpatient admission under the hospital's own criteria, particularly if the stay ran past two midnights.
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Codes that travel with this one
People also ask
Why was I not admitted?
Observation is used when the doctor needs more time to decide whether admission is necessary. It is a legitimate status, but it is also cheaper for payers than an admission, which is why the status is worth understanding.
Can I dispute observation status?
You can ask the hospital to review it, and Medicare patients have an appeal route for stays that were reclassified from inpatient to observation. Your own insurer may also review the status on request.
Sources
- CMS, Medicare Claims Processing Manual, chapter 4, section 290 (outpatient observation services)
- CMS, Medicare Outpatient Observation Notice (MOON)
This page explains a billing code in general terms. It is not a coding, legal or medical opinion about your bill, and the code descriptions are mediloop's own plain-English summaries, not the official CPT descriptors, which are owned by the American Medical Association. Whether a charge was correct depends on the record of your visit and your payer's rules.