CPT
90471 — Immunization administration, single vaccine
ACA-covered vaccines should be free, including the admin fee.
Inpatient hospital care
99222 — Initial hospital inpatient or observation care, moderate complexity (55+ min)
First-day admission E/M with moderate-complexity medical decision-making, or 55+ minutes total time. Frequently upcoded from 99221.
- Typical setting: Hospital inpatient or observation
- National avg charge (illustrative): Insurance allowed $145–$220; physician-side. Facility fees separate.
- Most-disputed reason: Documentation supports straightforward MDM (99221), not moderate.
What it means
What 99222 actually means
CPT 99222 is the middle level of initial hospital inpatient or observation care. It requires moderate-complexity medical decision-making OR 55 minutes or more on the date of the encounter. The chart should show multiple problems being addressed, a chronic illness with progression, or a new problem requiring prescription drug management.
Common errors with this code
What goes wrong on real bills.
Most bills that look correct still contain at least one of these issues. Up to 49% of medical bills contain errors (CFPB).
- Coded as 99222 when the encounter is really a low-complexity admission (would correctly be 99221).
- Time-based selection claimed without the actual time documented in the note.
- Both an attending and a hospitalist from the same group billing 99222 for the same admission day.
If you see 99222 on your bill
Three steps before paying.
1. Get the itemized bill. If your statement only shows a summary, request the CPT-level itemized bill before paying. Generate the request language →
2. Cross-check against the EOB. Compare what your insurer's Explanation of Benefits says you owe versus what the hospital is asking. They disagree more often than people think. Read the bill-vs-EOB guide →
3. Run a free Bill Scan. Upload the bill (and EOB if you have it) and BillBusted will flag the most likely issues with this specific code in your specific state. Run free scan →
Related codes
Other codes in this category.
People who land on 99222 often also see these adjacent codes on the same bill.
CPT
90472 — Immunization admin; each additional vaccine
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90651 — Human papillomavirus vaccine types 6, 11, 16, 18, 31, 33, 45, 52, 58, nonavalent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90670 — Pneumococcal conjugate vaccine, 13 valent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90671 — Pneumococcal conjugate vaccine, 15 valent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90677 — Pneumococcal conjugate vaccine, 20 valent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
Related BillBusted guides
Plain-English reads if you see 99222 on a bill.
99222 FAQ
Plain-English answers.
Why is 99222 a common dispute target?
Hospitalists are often pressured to bill 99222 by default. The level should reflect the actual decision-making complexity, not the practice's default level. Ask for the discharge summary — if it lists a single straightforward problem, 99222 may have been upcoded.
How much does 99222 cost?
Around $148–$170 under Medicare in most regions. Commercial insurance allowed amounts run about 1.5× that. Hospital facility charges (the room, nursing, supplies) are billed separately on a different claim type.
Don't pay 99222 blindly.
The free scan tells you in under 60 seconds whether this charge looks reasonable for your situation.